1 # tzdb data for Asia and environs 2 3 # This file is in the public domain, so clarified as of 4 # 2009-05-17 by Arthur David Olson. 5 6 # This file is by no means authoritative; if you think you know better, 7 # go ahead and edit the file (and please send any changes to 8 # tz@iana.org for general use in the future). For more, please see 9 # the file CONTRIBUTING in the tz distribution. 10 11 # From Paul Eggert (2018-06-19): 12 # 13 # Unless otherwise specified, the source for data through 1990 is: 14 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 15 # San Diego: ACS Publications, Inc. (2003). 16 # Unfortunately this book contains many errors and cites no sources. 17 # 18 # Many years ago Gwillim Law wrote that a good source 19 # for time zone data was the International Air Transport 20 # Association's Standard Schedules Information Manual (IATA SSIM), 21 # published semiannually. Law sent in several helpful summaries 22 # of the IATA's data after 1990. Except where otherwise noted, 23 # IATA SSIM is the source for entries after 1990. 24 # 25 # Another source occasionally used is Edward W. Whitman, World Time Differences, 26 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which 27 # I found in the UCLA library. 28 # 29 # For data circa 1899, a common source is: 30 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 31 # https://www.jstor.org/stable/1774359 32 # 33 # For Russian data circa 1919, a source is: 34 # Byalokoz EL. New Counting of Time in Russia since July 1, 1919. 35 # (See the 'europe' file for a fuller citation.) 36 # 37 # A reliable and entertaining source about time zones is 38 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). 39 # 40 # The following alphabetic abbreviations appear in these tables 41 # (corrections are welcome): 42 # std dst 43 # LMT Local Mean Time 44 # 2:00 EET EEST Eastern European Time 45 # 2:00 IST IDT Israel 46 # 5:30 IST India 47 # 7:00 WIB west Indonesia (Waktu Indonesia Barat) 48 # 8:00 WITA central Indonesia (Waktu Indonesia Tengah) 49 # 8:00 CST China 50 # 8:00 PST PDT* Philippine Standard Time 51 # 8:30 KST KDT Korea when at +0830 52 # 9:00 WIT east Indonesia (Waktu Indonesia Timur) 53 # 9:00 JST JDT Japan 54 # 9:00 KST KDT Korea when at +09 55 # 9:30 ACST Australian Central Standard Time 56 # *I invented the abbreviation PDT; see "Philippines" below. 57 # Otherwise, these tables typically use numeric abbreviations like +03 58 # and +0330 for integer hour and minute UT offsets. Although earlier 59 # editions invented alphabetic time zone abbreviations for every 60 # offset, this did not reflect common practice. 61 # 62 # See the 'europe' file for Russia and Turkey in Asia. 63 64 # From Guy Harris: 65 # Incorporates data for Singapore from Robert Elz' asia 1.1, as well as 66 # additional information from Tom Yap, Sun Microsystems Intercontinental 67 # Technical Support (including a page from the Official Airline Guide - 68 # Worldwide Edition). 69 70 ############################################################################### 71 72 # These rules are stolen from the 'europe' file. 73 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 74 Rule EUAsia 1981 max - Mar lastSun 1:00u 1:00 S 75 Rule EUAsia 1979 1995 - Sep lastSun 1:00u 0 - 76 Rule EUAsia 1996 max - Oct lastSun 1:00u 0 - 77 Rule E-EurAsia 1981 max - Mar lastSun 0:00 1:00 - 78 Rule E-EurAsia 1979 1995 - Sep lastSun 0:00 0 - 79 Rule E-EurAsia 1996 max - Oct lastSun 0:00 0 - 80 Rule RussiaAsia 1981 1984 - Apr 1 0:00 1:00 - 81 Rule RussiaAsia 1981 1983 - Oct 1 0:00 0 - 82 Rule RussiaAsia 1984 1995 - Sep lastSun 2:00s 0 - 83 Rule RussiaAsia 1985 2010 - Mar lastSun 2:00s 1:00 - 84 Rule RussiaAsia 1996 2010 - Oct lastSun 2:00s 0 - 85 86 # Afghanistan 87 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 88 Zone Asia/Kabul 4:36:48 - LMT 1890 89 4:00 - +04 1945 90 4:30 - +0430 91 92 # Armenia 93 # From Paul Eggert (2006-03-22): 94 # Shanks & Pottenger have Yerevan switching to 3:00 (with Russian DST) 95 # in spring 1991, then to 4:00 with no DST in fall 1995, then 96 # readopting Russian DST in 1997. Go with Shanks & Pottenger, even 97 # when they disagree with others. Edgar Der-Danieliantz 98 # reported (1996-05-04) that Yerevan probably wouldn't use DST 99 # in 1996, though it did use DST in 1995. IATA SSIM (1991/1998) reports that 100 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991, 101 # but started switching at 3:00s in 1998. 102 103 # From Arthur David Olson (2011-06-15): 104 # While Russia abandoned DST in 2011, Armenia may choose to 105 # follow Russia's "old" rules. 106 107 # From Alexander Krivenyshev (2012-02-10): 108 # According to News Armenia, on Feb 9, 2012, 109 # http://newsarmenia.ru/society/20120209/42609695.html 110 # 111 # The Armenia National Assembly adopted final reading of Amendments to the 112 # Law "On procedure of calculation time on the territory of the Republic of 113 # Armenia" according to which Armenia [is] abolishing Daylight Saving Time. 114 # or 115 # (brief) 116 # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html 117 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 118 Rule Armenia 2011 only - Mar lastSun 2:00s 1:00 - 119 Rule Armenia 2011 only - Oct lastSun 2:00s 0 - 120 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 121 Zone Asia/Yerevan 2:58:00 - LMT 1924 May 2 122 3:00 - +03 1957 Mar 123 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 124 3:00 RussiaAsia +03/+04 1995 Sep 24 2:00s 125 4:00 - +04 1997 126 4:00 RussiaAsia +04/+05 2011 127 4:00 Armenia +04/+05 128 129 # Azerbaijan 130 131 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23): 132 # According to the resolution of Cabinet of Ministers, 1997 133 # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17). 134 # http://code.az/files/daylight_res.pdf 135 136 # From Steffen Thorsen (2016-03-17): 137 # ... the Azerbaijani Cabinet of Ministers has cancelled switching to 138 # daylight saving time.... 139 # https://www.azernews.az/azerbaijan/94137.html 140 # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html 141 # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html 142 143 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 144 Rule Azer 1997 2015 - Mar lastSun 4:00 1:00 - 145 Rule Azer 1997 2015 - Oct lastSun 5:00 0 - 146 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 147 Zone Asia/Baku 3:19:24 - LMT 1924 May 2 148 3:00 - +03 1957 Mar 149 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 150 3:00 RussiaAsia +03/+04 1992 Sep lastSun 2:00s 151 4:00 - +04 1996 152 4:00 EUAsia +04/+05 1997 153 4:00 Azer +04/+05 154 155 # Bahrain 156 # See Asia/Qatar. 157 158 # Bangladesh 159 # From Alexander Krivenyshev (2009-05-13): 160 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce 161 # Daylight Saving Time from June 16 to Sept 30 162 # 163 # Bangladesh to introduce daylight saving time likely from June 16 164 # http://www.asiantribune.com/?q=node/17288 165 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html 166 # 167 # "... Bangladesh government has decided to switch daylight saving time from 168 # June 169 # 16 till September 30 in a bid to ensure maximum use of daylight to cope with 170 # crippling power crisis. " 171 # 172 # The switch will remain in effect from June 16 to Sept 30 (2009) but if 173 # implemented the next year, it will come in force from April 1, 2010 174 175 # From Steffen Thorsen (2009-06-02): 176 # They have finally decided now, but changed the start date to midnight between 177 # the 19th and 20th, and they have not set the end date yet. 178 # 179 # Some sources: 180 # https://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601 181 # http://bdnews24.com/details.php?id=85889&cid=2 182 # 183 # Our wrap-up: 184 # https://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html 185 186 # From A. N. M. Kamrus Saadat (2009-06-15): 187 # Finally we've got the official mail regarding DST start time where DST start 188 # time is mentioned as Jun 19 2009, 23:00 from BTRC (Bangladesh 189 # Telecommunication Regulatory Commission). 190 # 191 # No DST end date has been announced yet. 192 193 # From Alexander Krivenyshev (2009-09-25): 194 # Bangladesh won't go back to Standard Time from October 1, 2009, 195 # instead it will continue DST measure till the cabinet makes a fresh decision. 196 # 197 # Following report by same newspaper-"The Daily Star Friday": 198 # "DST change awaits cabinet decision-Clock won't go back by 1-hr from Oct 1" 199 # http://www.thedailystar.net/newDesign/news-details.php?nid=107021 200 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh04.html 201 202 # From Steffen Thorsen (2009-10-13): 203 # IANS (Indo-Asian News Service) now reports: 204 # Bangladesh has decided that the clock advanced by an hour to make 205 # maximum use of daylight hours as an energy saving measure would 206 # "continue for an indefinite period." 207 # 208 # One of many places where it is published: 209 # http://www.thaindian.com/newsportal/business/bangladesh-to-continue-indefinitely-with-advanced-time_100259987.html 210 211 # From Alexander Krivenyshev (2009-12-24): 212 # According to Bangladesh newspaper "The Daily Star," 213 # Bangladesh will change its clock back to Standard Time on Dec 31, 2009. 214 # 215 # Clock goes back 1-hr on Dec 31 night. 216 # http://www.thedailystar.net/newDesign/news-details.php?nid=119228 217 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh05.html 218 # 219 # "...The government yesterday decided to put the clock back by one hour 220 # on December 31 midnight and the new time will continue until March 31, 221 # 2010 midnight. The decision came at a cabinet meeting at the Prime 222 # Minister's Office last night..." 223 224 # From Alexander Krivenyshev (2010-03-22): 225 # According to Bangladesh newspaper "The Daily Star," 226 # Cabinet cancels Daylight Saving Time 227 # http://www.thedailystar.net/newDesign/latest_news.php?nid=22817 228 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh06.html 229 230 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 231 Rule Dhaka 2009 only - Jun 19 23:00 1:00 - 232 Rule Dhaka 2009 only - Dec 31 24:00 0 - 233 234 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 235 Zone Asia/Dhaka 6:01:40 - LMT 1890 236 5:53:20 - HMT 1941 Oct # Howrah Mean Time? 237 6:30 - +0630 1942 May 15 238 5:30 - +0530 1942 Sep 239 6:30 - +0630 1951 Sep 30 240 6:00 - +06 2009 241 6:00 Dhaka +06/+07 242 243 # Bhutan 244 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 245 Zone Asia/Thimphu 5:58:36 - LMT 1947 Aug 15 # or Thimbu 246 5:30 - +0530 1987 Oct 247 6:00 - +06 248 249 # British Indian Ocean Territory 250 # Whitman and the 1995 CIA time zone map say 5:00, but the 251 # 1997 and later maps say 6:00. Assume the switch occurred in 1996. 252 # We have no information as to when standard time was introduced; 253 # assume it occurred in 1907, the same year as Mauritius (which 254 # then contained the Chagos Archipelago). 255 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 256 Zone Indian/Chagos 4:49:40 - LMT 1907 257 5:00 - +05 1996 258 6:00 - +06 259 260 # Brunei 261 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 262 Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan 263 7:30 - +0730 1933 264 8:00 - +08 265 266 # Burma / Myanmar 267 268 # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon. 269 270 # From Paul Eggert (2017-04-20): 271 # Page 27 of Reed & Low (cited for Asia/Kolkata) says "Rangoon local time is 272 # used upon the railways and telegraphs of Burma, and is 6h. 24m. 47s. ahead 273 # of Greenwich." This refers to the period before Burma's transition to +0630, 274 # a transition for which Shanks is the only source. 275 276 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 277 Zone Asia/Yangon 6:24:47 - LMT 1880 # or Rangoon 278 6:24:47 - RMT 1920 # Rangoon local time 279 6:30 - +0630 1942 May 280 9:00 - +09 1945 May 3 281 6:30 - +0630 282 283 # Cambodia 284 # See Asia/Bangkok. 285 286 287 # China 288 289 # From Paul Eggert (2018-10-02): 290 # The following comes from Table 1 of: 291 # Li Yu. Research on the daylight saving movement in 1940s Shanghai. 292 # Nanjing Journal of Social Sciences. 2014;(2):144-50. 293 # http://oversea.cnki.net/kns55/detail.aspx?dbname=CJFD2014&filename=NJSH201402020 294 # The table lists dates only; I am guessing 00:00 and 24:00 transition times. 295 # Also, the table lists the planned end of DST in 1949, but the corresponding 296 # zone line cuts this off on May 28, when the Communists took power. 297 # 298 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 299 Rule Shang 1940 only - Jun 1 0:00 1:00 D 300 Rule Shang 1940 only - Oct 12 24:00 0 S 301 Rule Shang 1941 only - Mar 15 0:00 1:00 D 302 Rule Shang 1941 only - Nov 1 24:00 0 S 303 Rule Shang 1942 only - Jan 31 0:00 1:00 D 304 Rule Shang 1945 only - Sep 1 24:00 0 S 305 Rule Shang 1946 only - May 15 0:00 1:00 D 306 Rule Shang 1946 only - Sep 30 24:00 0 S 307 Rule Shang 1947 only - Apr 15 0:00 1:00 D 308 Rule Shang 1947 only - Oct 31 24:00 0 S 309 Rule Shang 1948 1949 - May 1 0:00 1:00 D 310 Rule Shang 1948 1949 - Sep 30 24:00 0 S #plan 311 312 # From Guy Harris: 313 # People's Republic of China. Yes, they really have only one time zone. 314 315 # From Bob Devine (1988-01-28): 316 # No they don't. See TIME mag, 1986-02-17 p.52. Even though 317 # China is across 4 physical time zones, before Feb 1, 1986 only the 318 # Peking (Beijing) time zone was recognized. Since that date, China 319 # has two of 'em - Peking's and Ürümqi (named after the capital of 320 # the Xinjiang Uyghur Autonomous Region). I don't know about DST for it. 321 # 322 # . . .I just deleted the DST table and this editor makes it too 323 # painful to suck in another copy. So, here is what I have for 324 # DST start/end dates for Peking's time zone (info from AP): 325 # 326 # 1986 May 4 - Sept 14 327 # 1987 mid-April - ?? 328 329 # From U. S. Naval Observatory (1989-01-19): 330 # CHINA 8 H AHEAD OF UTC ALL OF CHINA, INCL TAIWAN 331 # CHINA 9 H AHEAD OF UTC APR 17 - SEP 10 332 333 # From Paul Eggert (2008-02-11): 334 # Jim Mann, "A clumsy embrace for another western custom: China on daylight 335 # time - sort of", Los Angeles Times, 1986-05-05 ... [says] that China began 336 # observing daylight saving time in 1986. 337 338 # From P Chan (2018-05-07): 339 # The start and end time of DST in China [from 1986 on] should be 2:00 340 # (i.e. 2:00 to 3:00 at the start and 2:00 to 1:00 at the end).... 341 # Government notices about summer time: 342 # 343 # 1986-04-12 http://www.zj.gov.cn/attach/zfgb/198608.pdf p.21-22 344 # (To establish summer time from 1986. On 4 May, set the clocks ahead one hour 345 # at 2 am. On 14 September, set the clocks backward one hour at 2 am.) 346 # 347 # 1987-02-15 http://www.gov.cn/gongbao/shuju/1987/gwyb198703.pdf p.114 348 # (Summer time in 1987 to start from 12 April until 13 September) 349 # 350 # 1987-09-09 http://www.gov.cn/gongbao/shuju/1987/gwyb198721.pdf p.709 351 # (From 1988, summer time to start from 2 am of the first Sunday of mid-April 352 # until 2 am of the first Sunday of mid-September) 353 # 354 # 1992-03-03 http://www.gov.cn/gongbao/shuju/1992/gwyb199205.pdf p.152 355 # (To suspend summer time from 1992) 356 # 357 # The first page of People's Daily on 12 April 1988 stating that summer time 358 # to begin on 17 April. 359 # http://data.people.com.cn/pic/101p/1988/04/1988041201.jpg 360 361 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 362 Rule PRC 1986 only - May 4 2:00 1:00 D 363 Rule PRC 1986 1991 - Sep Sun>=11 2:00 0 S 364 Rule PRC 1987 1991 - Apr Sun>=11 2:00 1:00 D 365 366 # From Anthony Fok (2001-12-20): 367 # BTW, I did some research on-line and found some info regarding these five 368 # historic timezones from some Taiwan websites. And yes, there are official 369 # Chinese names for these locales (before 1949). 370 # 371 # From Jesper Nørgaard Welen (2006-07-14): 372 # I have investigated the timezones around 1970 on the 373 # https://www.astro.com/atlas site [with provinces and county 374 # boundaries summarized below].... A few other exceptions were two 375 # counties on the Sichuan side of the Xizang-Sichuan border, 376 # counties Dege and Baiyu which lies on the Sichuan side and are 377 # therefore supposed to be GMT+7, Xizang region being GMT+6, but Dege 378 # county is GMT+8 according to astro.com while Baiyu county is GMT+6 379 # (could be true), for the moment I am assuming that those two 380 # counties are mistakes in the astro.com data. 381 382 # From Paul Eggert (2017-01-05): 383 # Alois Treindl kindly sent me translations of the following two sources: 384 # 385 # (1) 386 # Guo Qing-sheng (National Time-Service Center, CAS, Xi'an 710600, China) 387 # Beijing Time at the Beginning of the PRC 388 # China Historical Materials of Science and Technology 389 # (Zhongguo ke ji shi liao, 中国科技史料). 2003;24(1):5-9. 390 # http://oversea.cnki.net/kcms/detail/detail.aspx?filename=ZGKS200301000&dbname=CJFD2003 391 # It gives evidence that at the beginning of the PRC, Beijing time was 392 # officially apparent solar time! However, Guo also says that the 393 # evidence is dubious, as the relevant institute of astronomy had not 394 # been taken over by the PRC yet. It's plausible that apparent solar 395 # time was announced but never implemented, and that people continued 396 # to use UT+8. As the Shanghai radio station (and I presume the 397 # observatory) was still under control of French missionaries, it 398 # could well have ignored any such mandate. 399 # 400 # (2) 401 # Guo Qing-sheng (Shaanxi Astronomical Observatory, CAS, Xi'an 710600, China) 402 # A Study on the Standard Time Changes for the Past 100 Years in China 403 # [undated and unknown publication location] 404 # It says several things: 405 # * The Qing dynasty used local apparent solar time throughout China. 406 # * The Republic of China instituted Beijing mean solar time effective 407 # the official calendar book of 1914. 408 # * The French Concession in Shanghai set up signal stations in 409 # French docks in the 1890s, controlled by Xujiahui (Zikawei) 410 # Observatory and set to local mean time. 411 # * "From the end of the 19th century" it changed to UT+8. 412 # * Chinese Customs (by then reduced to a tool of foreign powers) 413 # eventually standardized on this time for all ports, and it 414 # became used by railways as well. 415 # * In 1918 the Central Observatory proposed dividing China into 416 # five time zones (see below for details). This caught on 417 # at first only in coastal areas observing UT+8. 418 # * During WWII all of China was in theory was at UT+7. In practice 419 # this was ignored in the west, and I presume was ignored in 420 # Japanese-occupied territory. 421 # * Japanese-occupied Manchuria was at UT+9, i.e., Japan time. 422 # * The five-zone plan was resurrected after WWII and officially put into 423 # place (with some modifications) in March 1948. It's not clear 424 # how well it was observed in areas under Nationalist control. 425 # * The People's Liberation Army used UT+8 during the civil war. 426 # 427 # An AP article "Shanghai Internat'l Area Little Changed" in the 428 # Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is 429 # different - the occupied districts going by Tokyo time, an hour 430 # ahead of that prevailing in the rest of Shanghai." Guess that the 431 # Xujiahui Observatory was under French control and stuck with UT +08. 432 # 433 # In earlier versions of this file, China had many separate Zone entries, but 434 # this was based on what were apparently incorrect data in Shanks & Pottenger. 435 # This has now been simplified to the two entries Asia/Shanghai and 436 # Asia/Urumqi, with the others being links for backward compatibility. 437 # Proposed in 1918 and theoretically in effect until 1949 (although in practice 438 # mainly observed in coastal areas), the five zones were: 439 # 440 # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT +08:30 441 # Now part of Asia/Shanghai; its pre-1970 times are not recorded here. 442 # Heilongjiang (except Mohe county), Jilin 443 # 444 # Zhongyuan Time ("Central plain Time") UT +08 445 # Now part of Asia/Shanghai. 446 # most of China 447 # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest. 448 # Guo says Shanghai switched to UT +08 "from the end of the 19th century". 449 # 450 # Long-shu Time (probably as Long and Shu were two names of the area) UT +07 451 # Now part of Asia/Shanghai; its pre-1970 times are not recorded here. 452 # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan; 453 # most of Gansu; west Inner Mongolia; east Qinghai; and the Guangdong 454 # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing, 455 # Yangchun, Yangjiang, Yu'nan, and Yunfu. 456 # 457 # Xin-zang Time ("Xinjiang-Tibet Time") UT +06 458 # This region is now part of either Asia/Urumqi or Asia/Shanghai with 459 # current boundaries uncertain; times before 1970 for areas that 460 # disagree with Ürümqi or Shanghai are not recorded here. 461 # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai; 462 # the Guangdong counties Xuwen, Haikang, Suixi, Lianjiang, 463 # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi; 464 # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi; 465 # east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe, 466 # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin, 467 # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami, 468 # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan. 469 # 470 # Kunlun Time UT +05:30 471 # This region is now in the same status as Xin-zang Time (see above). 472 # West Tibet, including Pulan, Aheqi, Shufu, Shule; 473 # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke, 474 # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding, 475 # and Yarkand. 476 477 # From Luther Ma (2009-10-17): 478 # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in 479 # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time, 480 # but have no need of it. All planes, trains, and schools function on 481 # what is called "Beijing time." When Han make an appointment in Chinese 482 # they implicitly use Beijing time. 483 # 484 # On the other hand, ethnic Uyghurs, who make up about half the 485 # population of Xinjiang, typically use "Xinjiang time" which is two 486 # hours behind Beijing time, or UT +06. The government of the Xinjiang 487 # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as 488 # local governments such as the Ürümqi city government use both times in 489 # publications, referring to what is popularly called Xinjiang time as 490 # "Ürümqi time." When Uyghurs make an appointment in the Uyghur language 491 # they almost invariably use Xinjiang time. 492 # 493 # (Their ethnic Han compatriots would typically have no clue of its 494 # widespread use, however, because so extremely few of them are fluent in 495 # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.) 496 # 497 # (...As with the rest of China there was a brief interval ending in 1990 498 # or 1991 when summer time was in use. The confusion was severe, with 499 # the province not having dual times but four times in use at the same 500 # time. Some areas remained on standard Xinjiang time or Beijing time and 501 # others moving their clocks ahead.) 502 503 # From Luther Ma (2009-11-19): 504 # With the risk of being redundant to previous answers these are the most common 505 # English "transliterations" (w/o using non-English symbols): 506 # 507 # 1. Wulumuqi... 508 # 2. Kashi... 509 # 3. Urumqi... 510 # 4. Kashgar... 511 # ... 512 # 5. It seems that Uyghurs in Ürümqi has been using Xinjiang since at least the 513 # 1960's. I know of one Han, now over 50, who grew up in the surrounding 514 # countryside and used Xinjiang time as a child. 515 # 516 # 6. Likewise for Kashgar and the rest of south Xinjiang I don't know of any 517 # start date for Xinjiang time. 518 # 519 # Without having access to local historical records, nor the ability to legally 520 # publish them, I would go with October 1, 1949, when Xinjiang became the Uyghur 521 # Autonomous Region under the PRC. (Before that Uyghurs, of course, would also 522 # not be using Beijing time, but some local time.) 523 524 # From David Cochrane (2014-03-26): 525 # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986: 526 # https://content.time.com/time/magazine/article/0,9171,960684,00.html 527 528 # From Luther Ma (2014-04-22): 529 # I have interviewed numerous people of various nationalities and from 530 # different localities in Xinjiang and can confirm the information in Guo's 531 # report regarding Xinjiang, as well as the Time article reference by David 532 # Cochrane. Whether officially recognized or not (and both are officially 533 # recognized), two separate times have been in use in Xinjiang since at least 534 # the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time; 535 # and Beijing Time. There is no confusion in Xinjiang as to which name refers 536 # to which time. Both are widely used in the province, although in some 537 # population groups might be use one to the exclusion of the other. The only 538 # problem is that computers and smart phones list Ürümqi (or Kashgar) as 539 # having the same time as Beijing. 540 541 # From Paul Eggert (2014-06-30): 542 # In the early days of the PRC, Tibet was given its own time zone (UT +06) 543 # but this was withdrawn in 1959 and never reinstated; see Tubten Khétsun, 544 # Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN 545 # 978-0231142861 (2008), translator's introduction by Matthew Akester, p x. 546 # As this is before our 1970 cutoff, Tibet doesn't need a separate zone. 547 # 548 # Xinjiang Time is well-documented as being officially recognized. E.g., see 549 # "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government" 550 # <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22). 551 # Unfortunately, we have no good records of time in Xinjiang before 1986. 552 # During the 20th century parts of Xinjiang were ruled by the Qing dynasty, 553 # the Republic of China, various warlords, the First and Second East Turkestan 554 # Republics, the Soviet Union, the Kuomintang, and the People's Republic of 555 # China, and tracking down all these organizations' timekeeping rules would be 556 # quite a trick. Approximate this lost history by a transition from LMT to 557 # UT +06 at the start of 1928, the year of accession of the warlord Jin Shuren, 558 # which happens to be the date given by Shanks & Pottenger (no doubt as a 559 # guess) as the transition from LMT. Ignore the usage of +08 before 560 # 1986-02-01 under the theory that the transition date to +08 is unknown and 561 # that the sort of users who prefer Asia/Urumqi now typically ignored the 562 # +08 mandate back then. 563 564 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 565 # Beijing time, used throughout China; represented by Shanghai. 566 Zone Asia/Shanghai 8:05:43 - LMT 1901 567 8:00 Shang C%sT 1949 May 28 568 8:00 PRC C%sT 569 # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi 570 # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) 571 Zone Asia/Urumqi 5:50:20 - LMT 1928 572 6:00 - +06 573 574 575 # Hong Kong (Xianggang) 576 577 # Milne gives 7:36:41.7; round this. 578 579 # From Lee Yiu Chung (2009-10-24): 580 # I found there are some mistakes for the...DST rule for Hong 581 # Kong. [According] to the DST record from Hong Kong Observatory (actually, 582 # it is not [an] observatory, but the official meteorological agency of HK, 583 # and also serves as the official timing agency), there are some missing 584 # and incorrect rules. Although the exact switch over time is missing, I 585 # think 3:30 is correct. The official DST record for Hong Kong can be 586 # obtained from 587 # http://www.hko.gov.hk/gts/time/Summertime.htm 588 589 # From Phake Nick (2018-10-27): 590 # According to Singaporean newspaper 591 # http://eresources.nlb.gov.sg/newspapers/Digitised/Article/singfreepresswk19041102-1.2.37 592 # the day that Hong Kong start using GMT+8 should be Oct 30, 1904. 593 # 594 # From Paul Eggert (2018-11-17): 595 # Hong Kong had a time ball near the Marine Police Station, Tsim Sha Tsui. 596 # "The ball was raised manually each day and dropped at exactly 1pm 597 # (except on Sundays and Government holidays)." 598 # Dyson AD. From Time Ball to Atomic Clock. Hong Kong Government. 1983. 599 # <https://www.hko.gov.hk/publica/gen_pub/timeball_atomic_clock.pdf> 600 # "From 1904 October 30 the time-ball at Hong Kong has been dropped by order 601 # of the Governor of the Colony at 17h 0m 0s G.M.T., which is 23m 18s.14 in 602 # advance of 1h 0m 0s of Hong Kong mean time." 603 # Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. 604 # 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 605 # 606 # From Joseph Myers (2018-11-18): 607 # An astronomer before 1925 referring to GMT would have been using the old 608 # astronomical convention where the day started at noon, not midnight. 609 # 610 # From Steve Allen (2018-11-17): 611 # Meteorological Observations made at the Hongkong Observatory in the year 1904 612 # page 4 <https://books.google.com/books?id=kgw5AQAAMAAJ&pg=RA4-PA4> 613 # ... the log of drop times in Table II shows that on Sunday 1904-10-30 the 614 # ball was dropped. So that looks like a special case drop for the sake 615 # of broadcasting the new local time. 616 # 617 # From Phake Nick (2018-11-18): 618 # According to The Hong Kong Weekly Press, 1904-10-29, p.324, the 619 # governor of Hong Kong at the time stated that "We are further desired to 620 # make it known that the change will be effected by firing the gun and by the 621 # dropping of the Ball at 23min. 18sec. before one." 622 # From Paul Eggert (2018-11-18): 623 # See <https://mmis.hkpl.gov.hk> for this; unfortunately Flash is required. 624 625 # From Phake Nick (2018-10-26): 626 # I went to check microfilm records stored at Hong Kong Public Library.... 627 # on September 30 1941, according to Ta Kung Pao (Hong Kong edition), it was 628 # stated that fallback would occur on the next day (the 1st)'s "03:00 am (Hong 629 # Kong Time 04:00 am)" and the clock will fall back for a half hour. (03:00 630 # probably refer to the time commonly used in mainland China at the time given 631 # the paper's background) ... the sunrise/sunset time given by South China 632 # Morning Post for October 1st was indeed moved by half an hour compares to 633 # before. After that, in December, the battle to capture Hong Kong started and 634 # the library doesn't seems to have any record stored about press during that 635 # period of time. Some media resumed publication soon after that within the 636 # same month, but there were not much information about time there. Later they 637 # started including a radio program guide when they restored radio service, 638 # explicitly mentioning it use Tokyo standard time, and later added a note 639 # saying it's half an hour ahead of the old Hong Kong standard time, and it 640 # also seems to indicate that Hong Kong was not using GMT+8 when it was 641 # captured by Japan. 642 # 643 # Image of related sections on newspaper: 644 # * 1941-09-30, Ta Kung Pao (Hong Kong), "Winter Time start tomorrow". 645 # https://i.imgur.com/6waY51Z.jpg (Chinese) 646 # * 1941-09-29, South China Morning Post, Information on sunrise/sunset 647 # time and other things for September 30 and October 1. 648 # https://i.imgur.com/kCiUR78.jpg 649 # * 1942-02-05. The Hong Kong News, Radio Program Guide. 650 # https://i.imgur.com/eVvDMzS.jpg 651 # * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow. 652 # https://i.imgur.com/05KkvtC.png 653 # * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. 654 # https://i.imgur.com/dge4kFJ.png 655 # Also, the Liberation day of Hong Kong after WWII which British rule 656 # over the territory resumed was August 30, 1945, which I think should 657 # be the termination date for the use of JST in the territory.... 658 659 # From Paul Eggert (2018-11-17): 660 # Here are the dates given at 661 # https://www.hko.gov.hk/gts/time/Summertime.htm 662 # as of 2014-06-19: 663 # Year Period 664 # 1941 15 Jun to 30 Sep 665 # 1942 Whole year 666 # 1943 Whole year 667 # 1944 Whole year 668 # 1945 Whole year 669 # 1946 20 Apr to 1 Dec 670 # 1947 13 Apr to 30 Dec 671 # 1948 2 May to 31 Oct 672 # 1949 3 Apr to 30 Oct 673 # 1950 2 Apr to 29 Oct 674 # 1951 1 Apr to 28 Oct 675 # 1952 6 Apr to 2 Nov 676 # 1953 5 Apr to 1 Nov 677 # 1954 21 Mar to 31 Oct 678 # 1955 20 Mar to 6 Nov 679 # 1956 18 Mar to 4 Nov 680 # 1957 24 Mar to 3 Nov 681 # 1958 23 Mar to 2 Nov 682 # 1959 22 Mar to 1 Nov 683 # 1960 20 Mar to 6 Nov 684 # 1961 19 Mar to 5 Nov 685 # 1962 18 Mar to 4 Nov 686 # 1963 24 Mar to 3 Nov 687 # 1964 22 Mar to 1 Nov 688 # 1965 18 Apr to 17 Oct 689 # 1966 17 Apr to 16 Oct 690 # 1967 16 Apr to 22 Oct 691 # 1968 21 Apr to 20 Oct 692 # 1969 20 Apr to 19 Oct 693 # 1970 19 Apr to 18 Oct 694 # 1971 18 Apr to 17 Oct 695 # 1972 16 Apr to 22 Oct 696 # 1973 22 Apr to 21 Oct 697 # 1973/74 30 Dec 73 to 20 Oct 74 698 # 1975 20 Apr to 19 Oct 699 # 1976 18 Apr to 17 Oct 700 # 1977 Nil 701 # 1978 Nil 702 # 1979 13 May to 21 Oct 703 # 1980 to Now Nil 704 # The page does not give times of day for transitions, 705 # or dates for the 1942 and 1945 transitions. 706 # The Japanese occupation of Hong Kong began 1941-12-25. 707 # The Japanese surrender of Hong Kong was signed 1945-09-16; see: 708 # Heaver S. The days after the Pacific war ended: unsettling times 709 # in Hong Kong. Post Magazine. 2016-06-13. 710 # https://www.scmp.com/magazines/post-magazine/article/1852990/days-after-pacific-war-ended-unsettling-times-hong-kong 711 # For lack of anything better, use start of those days as the 712 # transition times. 713 714 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 715 Rule HK 1946 only - Apr 20 3:30 1:00 S 716 Rule HK 1946 only - Dec 1 3:30 0 - 717 Rule HK 1947 only - Apr 13 3:30 1:00 S 718 Rule HK 1947 only - Dec 30 3:30 0 - 719 Rule HK 1948 only - May 2 3:30 1:00 S 720 Rule HK 1948 1951 - Oct lastSun 3:30 0 - 721 Rule HK 1952 1953 - Nov Sun>=1 3:30 0 - 722 Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S 723 Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S 724 Rule HK 1954 only - Oct 31 3:30 0 - 725 Rule HK 1955 1964 - Nov Sun>=1 3:30 0 - 726 Rule HK 1965 1976 - Apr Sun>=16 3:30 1:00 S 727 Rule HK 1965 1976 - Oct Sun>=16 3:30 0 - 728 Rule HK 1973 only - Dec 30 3:30 1:00 S 729 Rule HK 1979 only - May Sun>=8 3:30 1:00 S 730 Rule HK 1979 only - Oct Sun>=16 3:30 0 - 731 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 732 Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 733 8:00 - HKT 1941 Jun 15 3:30 734 8:00 1:00 HKST 1941 Oct 1 4:00 735 8:30 - HKT 1941 Dec 25 736 9:00 - JST 1945 Sep 16 737 8:00 HK HK%sT 738 739 ############################################################################### 740 741 # Taiwan 742 743 # From smallufo (2010-04-03): 744 # According to Taiwan's CWB [Central Weather Bureau], 745 # http://www.cwb.gov.tw/V6/astronomy/cdata/summert.htm 746 # Taipei has DST in 1979 between July 1st and Sep 30. 747 748 # From Yu-Cheng Chuang (2013-07-12): 749 # On Dec 28, 1895, the Meiji Emperor announced Ordinance No. 167 of 750 # Meiji Year 28 "The clause about standard time", mentioned that 751 # Taiwan and Penghu Islands, as well as Yaeyama and Miyako Islands 752 # (both in Okinawa) adopt the Western Standard Time which is based on 753 # 120E. The adoption began from Jan 1, 1896. The original text can be 754 # found on Wikisource: 755 # https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) 756 # ... This could be the first adoption of time zone in Taiwan, because 757 # during the Qing Dynasty, it seems that there was no time zone 758 # declared officially. 759 # 760 # Later, in the beginning of World War II, on Sep 25, 1937, the Showa 761 # Emperor announced Ordinance No. 529 of Showa Year 12 "The clause of 762 # revision in the ordinance No. 167 of Meiji year 28 about standard 763 # time", in which abolished the adoption of Western Standard Time in 764 # western islands (listed above), which means the whole Japan 765 # territory, including later occupations, adopt Japan Central Time 766 # (UT+9). The adoption began on Oct 1, 1937. The original text can 767 # be found on Wikisource: 768 # https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 769 # 770 # That is, the time zone of Taipei switched to UT+9 on Oct 1, 1937. 771 772 # From Yu-Cheng Chuang (2014-07-02): 773 # I've found more evidence about when the time zone was switched from UT+9 774 # back to UT+8 after WW2. I believe it was on Sep 21, 1945. In a document 775 # during Japanese era [1] in which the officer told the staff to change time 776 # zone back to Western Standard Time (UT+8) on Sep 21. And in another 777 # history page of National Cheng Kung University [2], on Sep 21 there is a 778 # note "from today, switch back to Western Standard Time". From these two 779 # materials, I believe that the time zone change happened on Sep 21. And 780 # today I have found another monthly journal called "The Astronomical Herald" 781 # from The Astronomical Society of Japan [3] in which it mentioned the fact 782 # that: 783 # 784 # 1. Standard Time of the Country (Japan) was adopted on Jan 1, 1888, using 785 # the time at 135E (GMT+9) 786 # 787 # 2. Standard Time of the Country was renamed to Central Standard Time, on Jan 788 # 1, 1898, and on the same day, the new territories Taiwan and Penghu islands, 789 # as well as Yaeyama and Miyako islands, adopted a new time zone called 790 # Western Standard Time, which is in GMT+8. 791 # 792 # 3. Western Standard Time was deprecated on Sep 30, 1937. From then all the 793 # territories of Japan adopted the same time zone, which is Central Standard 794 # Time. 795 # 796 # [1] Academica Historica, Taiwan: 797 # http://163.29.208.22:8080/govsaleShowImage/connect_img.php?s=00101738900090036&e=00101738900090037 798 # [2] Nat'l Cheng Kung University 70th Anniversary Special Site: 799 # http://www.ncku.edu.tw/~ncku70/menu/001/01_01.htm 800 # [3] Yukio Niimi, The Standard Time in Japan (1997), p.475: 801 # http://www.asj.or.jp/geppou/archive_open/1997/pdf/19971001c.pdf 802 803 # Yu-Cheng Chuang (2014-07-03): 804 # I finally have found the real official gazette about changing back to 805 # Western Standard Time on Sep 21 in Taiwan. It's Taiwan Governor-General 806 # Bulletin No. 386 in Showa 20 years (1945), published on Sep 19, 1945. [1] ... 807 # [It] abolishes Bulletin No. 207 in Showa 12 years (1937), which is a local 808 # bulletin in Taiwan for that Ordinance No. 529. It also mentioned that 1am on 809 # Sep 21, 1945 will be 12am on Sep 21. I think this bulletin is much more 810 # official than the one I mentioned in my first mail, because it's from the 811 # top-level government in Taiwan. If you're going to quote any resource, this 812 # would be a good one. 813 # [1] Taiwan Governor-General Gazette, No. 1018, Sep 19, 1945: 814 # http://db2.th.gov.tw/db2/view/viewImg.php?imgcode=0072031018a&num=19&bgn=019&end=019&otherImg=&type=gener 815 816 # From Yu-Cheng Chuang (2014-07-02): 817 # In 1946, DST in Taiwan was from May 15 and ended on Sep 30. The info from 818 # Central Weather Bureau website was not correct. 819 # 820 # Original Bulletin: 821 # http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF 822 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.) 823 # 824 # In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that 825 # telegram announcement from Taiwan Province Government: 826 # 827 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431 828 # 829 # Here is a brief translation: 830 # 831 # The Summer Time this year is adopted from midnight Apr 15 until Sep 20 832 # midnight. To save (energy?) consumption, we're expanding Summer Time 833 # adoption till Oct 31 midnight. 834 # 835 # The Central Weather Bureau website didn't mention that, however it can 836 # be found from historical government announcement database. 837 838 # From Paul Eggert (2014-07-03): 839 # As per Yu-Cheng Chuang, say that Taiwan was at UT +09 from 1937-10-01 840 # until 1945-09-21 at 01:00, overriding Shanks & Pottenger. 841 # Likewise, use Yu-Cheng Chuang's data for DST in Taiwan. 842 843 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 844 Rule Taiwan 1946 only - May 15 0:00 1:00 D 845 Rule Taiwan 1946 only - Oct 1 0:00 0 S 846 Rule Taiwan 1947 only - Apr 15 0:00 1:00 D 847 Rule Taiwan 1947 only - Nov 1 0:00 0 S 848 Rule Taiwan 1948 1951 - May 1 0:00 1:00 D 849 Rule Taiwan 1948 1951 - Oct 1 0:00 0 S 850 Rule Taiwan 1952 only - Mar 1 0:00 1:00 D 851 Rule Taiwan 1952 1954 - Nov 1 0:00 0 S 852 Rule Taiwan 1953 1959 - Apr 1 0:00 1:00 D 853 Rule Taiwan 1955 1961 - Oct 1 0:00 0 S 854 Rule Taiwan 1960 1961 - Jun 1 0:00 1:00 D 855 Rule Taiwan 1974 1975 - Apr 1 0:00 1:00 D 856 Rule Taiwan 1974 1975 - Oct 1 0:00 0 S 857 Rule Taiwan 1979 only - Jul 1 0:00 1:00 D 858 Rule Taiwan 1979 only - Oct 1 0:00 0 S 859 860 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 861 # Taipei or Taibei or T'ai-pei 862 Zone Asia/Taipei 8:06:00 - LMT 1896 Jan 1 863 8:00 - CST 1937 Oct 1 864 9:00 - JST 1945 Sep 21 1:00 865 8:00 Taiwan C%sT 866 867 # Macau (Macao, Aomen) 868 # 869 # From P Chan (2018-05-10): 870 # * LegisMac 871 # http://legismac.safp.gov.mo/legismac/descqry/Descqry.jsf?lang=pt 872 # A database for searching titles of legal documents of Macau in 873 # Chinese and Portuguese. The term "HORÁRIO DE VERÃO" can be used for 874 # searching decrees about summer time. 875 # * Archives of Macao 876 # http://www.archives.gov.mo/en/bo/ 877 # It contains images of old official gazettes. 878 # * The Macao Meteorological and Geophysical Bureau have a page listing the 879 # summer time history. But it is not complete and has some mistakes. 880 # http://www.smg.gov.mo/smg/geophysics/e_t_Summer%20Time.htm 881 # Macau adopted GMT+8 on 30 Oct 1904 to follow Hong Kong. Clocks were 882 # advanced by 25 minutes and 50 seconds. Which means the LMT used was 883 # +7:34:10. As stated in the "Portaria No. 204" dated 21 October 1904 884 # and published in the Official Gazette on 29 October 1904. 885 # http://igallery.icm.gov.mo/Images/Archives/BO/MO_AH_PUB_BO_1904_10/MO_AH_PUB_BO_1904_10_00025_Grey.JPG 886 # 887 # Therefore the 1911 decree of Portugal did not change time in Macau. 888 # 889 # From LegisMac, here is a list of decrees that changed the time ... 890 # [Decree Gazette-no. date; titles omitted in this quotation] 891 # DIL 732 BOCM 51 1941.12.20 892 # DIL 764 BOCM 9S 1942.04.30 893 # DIL 781 BOCM 21 1942.10.10 894 # PT 3434 BOCM 8S 1943.04.17 895 # PT 3504 BOCM 20 1943.09.25 896 # PT 3843 BOCM 39 1945.09.29 897 # PT 3961 BOCM 17 1946.04.27 898 # PT 4026 BOCM 39 1946.09.28 899 # PT 4153 BOCM 16 1947.04.10 900 # PT 4271 BOCM 48 1947.11.29 901 # PT 4374 BOCM 18 1948.05.01 902 # PT 4465 BOCM 44 1948.10.30 903 # PT 4590 BOCM 14 1949.04.02 904 # PT 4666 BOCM 44 1949.10.29 905 # PT 4771 BOCM 12 1950.03.25 906 # PT 4838 BOCM 43 1950.10.28 907 # PT 4946 BOCM 12 1951.03.24 908 # PT 5025 BO 43 1951.10.27 909 # PT 5149 BO 14 1952.04.05 910 # PT 5251 BO 43 1952.10.25 911 # PT 5366 BO 13 1953.03.28 912 # PT 5444 BO 44 1953.10.31 913 # PT 5540 BO 12 1954.03.20 914 # PT 5589 BO 44 1954.10.30 915 # PT 5676 BO 12 1955.03.19 916 # PT 5739 BO 45 1955.11.05 917 # PT 5823 BO 11 1956.03.17 918 # PT 5891 BO 44 1956.11.03 919 # PT 5981 BO 12 1957.03.23 920 # PT 6064 BO 43 1957.10.26 921 # PT 6172 BO 12 1958.03.22 922 # PT 6243 BO 43 1958.10.25 923 # PT 6341 BO 12 1959.03.21 924 # PT 6411 BO 43 1959.10.24 925 # PT 6514 BO 11 1960.03.12 926 # PT 6584 BO 44 1960.10.29 927 # PT 6721 BO 10 1961.03.11 928 # PT 6815 BO 43 1961.10.28 929 # PT 6947 BO 10 1962.03.10 930 # PT 7080 BO 43 1962.10.27 931 # PT 7218 BO 12 1963.03.23 932 # PT 7340 BO 43 1963.10.26 933 # PT 7491 BO 11 1964.03.14 934 # PT 7664 BO 43 1964.10.24 935 # PT 7846 BO 15 1965.04.10 936 # PT 7979 BO 42 1965.10.16 937 # PT 8146 BO 15 1966.04.09 938 # PT 8252 BO 41 1966.10.08 939 # PT 8429 BO 15 1967.04.15 940 # PT 8540 BO 41 1967.10.14 941 # PT 8735 BO 15 1968.04.13 942 # PT 8860 BO 41 1968.10.12 943 # PT 9035 BO 16 1969.04.19 944 # PT 9156 BO 42 1969.10.18 945 # PT 9328 BO 15 1970.04.11 946 # PT 9418 BO 41 1970.10.10 947 # PT 9587 BO 14 1971.04.03 948 # PT 9702 BO 41 1971.10.09 949 # PT 38-A/72 BO 14 1972.04.01 950 # PT 126-A/72 BO 41 1972.10.07 951 # PT 61/73 BO 14 1973.04.07 952 # PT 182/73 BO 40 1973.10.06 953 # PT 282/73 BO 51 1973.12.22 954 # PT 177/74 BO 41 1974.10.12 955 # PT 51/75 BO 15 1975.04.12 956 # PT 173/75 BO 41 1975.10.11 957 # PT 67/76/M BO 14 1976.04.03 958 # PT 169/76/M BO 41 1976.10.09 959 # PT 78/79/M BO 19 1979.05.12 960 # PT 166/79/M BO 42 1979.10.20 961 # Note that DIL 732 does not belong to "HORÁRIO DE VERÃO" according to 962 # LegisMac.... Note that between 1942 and 1945, the time switched 963 # between GMT+9 and GMT+10. Also in 1965 and 1965 the DST ended at 2:30am. 964 965 # From Paul Eggert (2018-05-10): 966 # The 1904 decree says that Macau changed from the meridian of 967 # Fortaleza do Monte, presumably the basis for the 7:34:10 for LMT. 968 969 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 970 Rule Macau 1942 1943 - Apr 30 23:00 1:00 - 971 Rule Macau 1942 only - Nov 17 23:00 0 - 972 Rule Macau 1943 only - Sep 30 23:00 0 S 973 Rule Macau 1946 only - Apr 30 23:00s 1:00 D 974 Rule Macau 1946 only - Sep 30 23:00s 0 S 975 Rule Macau 1947 only - Apr 19 23:00s 1:00 D 976 Rule Macau 1947 only - Nov 30 23:00s 0 S 977 Rule Macau 1948 only - May 2 23:00s 1:00 D 978 Rule Macau 1948 only - Oct 31 23:00s 0 S 979 Rule Macau 1949 1950 - Apr Sat>=1 23:00s 1:00 D 980 Rule Macau 1949 1950 - Oct lastSat 23:00s 0 S 981 Rule Macau 1951 only - Mar 31 23:00s 1:00 D 982 Rule Macau 1951 only - Oct 28 23:00s 0 S 983 Rule Macau 1952 1953 - Apr Sat>=1 23:00s 1:00 D 984 Rule Macau 1952 only - Nov 1 23:00s 0 S 985 Rule Macau 1953 1954 - Oct lastSat 23:00s 0 S 986 Rule Macau 1954 1956 - Mar Sat>=17 23:00s 1:00 D 987 Rule Macau 1955 only - Nov 5 23:00s 0 S 988 Rule Macau 1956 1964 - Nov Sun>=1 03:30 0 S 989 Rule Macau 1957 1964 - Mar Sun>=18 03:30 1:00 D 990 Rule Macau 1965 1973 - Apr Sun>=16 03:30 1:00 D 991 Rule Macau 1965 1966 - Oct Sun>=16 02:30 0 S 992 Rule Macau 1967 1976 - Oct Sun>=16 03:30 0 S 993 Rule Macau 1973 only - Dec 30 03:30 1:00 D 994 Rule Macau 1975 1976 - Apr Sun>=16 03:30 1:00 D 995 Rule Macau 1979 only - May 13 03:30 1:00 D 996 Rule Macau 1979 only - Oct Sun>=16 03:30 0 S 997 998 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 999 Zone Asia/Macau 7:34:10 - LMT 1904 Oct 30 1000 8:00 - CST 1941 Dec 21 23:00 1001 9:00 Macau +09/+10 1945 Sep 30 24:00 1002 8:00 Macau C%sT 1003 1004 1005 ############################################################################### 1006 1007 # Cyprus 1008 1009 # Milne says the Eastern Telegraph Company used 2:14:00. Stick with LMT. 1010 # IATA SSIM (1998-09) has Cyprus using EU rules for the first time. 1011 1012 # From Paul Eggert (2016-09-09): 1013 # Yesterday's Cyprus Mail reports that Northern Cyprus followed Turkey's 1014 # lead and switched from +02/+03 to +03 year-round. 1015 # http://cyprus-mail.com/2016/09/08/two-time-zones-cyprus-turkey-will-not-turn-clocks-back-next-month/ 1016 # 1017 # From Even Scharning (2016-10-31): 1018 # Looks like the time zone split in Cyprus went through last night. 1019 # http://cyprus-mail.com/2016/10/30/cyprus-new-division-two-time-zones-now-reality/ 1020 1021 # From Paul Eggert (2017-10-18): 1022 # Northern Cyprus will reinstate winter time on October 29, thus 1023 # staying in sync with the rest of Cyprus. See: Anastasiou A. 1024 # Cyprus to remain united in time. Cyprus Mail 2017-10-17. 1025 # https://cyprus-mail.com/2017/10/17/cyprus-remain-united-time/ 1026 1027 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1028 Rule Cyprus 1975 only - Apr 13 0:00 1:00 S 1029 Rule Cyprus 1975 only - Oct 12 0:00 0 - 1030 Rule Cyprus 1976 only - May 15 0:00 1:00 S 1031 Rule Cyprus 1976 only - Oct 11 0:00 0 - 1032 Rule Cyprus 1977 1980 - Apr Sun>=1 0:00 1:00 S 1033 Rule Cyprus 1977 only - Sep 25 0:00 0 - 1034 Rule Cyprus 1978 only - Oct 2 0:00 0 - 1035 Rule Cyprus 1979 1997 - Sep lastSun 0:00 0 - 1036 Rule Cyprus 1981 1998 - Mar lastSun 0:00 1:00 S 1037 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1038 Zone Asia/Nicosia 2:13:28 - LMT 1921 Nov 14 1039 2:00 Cyprus EE%sT 1998 Sep 1040 2:00 EUAsia EE%sT 1041 Zone Asia/Famagusta 2:15:48 - LMT 1921 Nov 14 1042 2:00 Cyprus EE%sT 1998 Sep 1043 2:00 EUAsia EE%sT 2016 Sep 8 1044 3:00 - +03 2017 Oct 29 1:00u 1045 2:00 EUAsia EE%sT 1046 1047 # Classically, Cyprus belongs to Asia; e.g. see Herodotus, Histories, I.72. 1048 # However, for various reasons many users expect to find it under Europe. 1049 Link Asia/Nicosia Europe/Nicosia 1050 1051 # Georgia 1052 # From Paul Eggert (1994-11-19): 1053 # Today's _Economist_ (p 60) reports that Georgia moved its clocks forward 1054 # an hour recently, due to a law proposed by Zurab Murvanidze, 1055 # an MP who went on a hunger strike for 11 days to force discussion about it! 1056 # We have no details, but we'll guess they didn't move the clocks back in fall. 1057 # 1058 # From Mathew Englander, quoting AP (1996-10-23 13:05-04): 1059 # Instead of putting back clocks at the end of October, Georgia 1060 # will stay on daylight savings time this winter to save energy, 1061 # President Eduard Shevardnadze decreed Wednesday. 1062 # 1063 # From the BBC via Joseph S. Myers (2004-06-27): 1064 # 1065 # Georgia moved closer to Western Europe on Sunday... The former Soviet 1066 # republic has changed its time zone back to that of Moscow. As a result it 1067 # is now just four hours ahead of Greenwich Mean Time, rather than five hours 1068 # ahead. The switch was decreed by the pro-Western president of Georgia, 1069 # Mikheil Saakashvili, who said the change was partly prompted by the process 1070 # of integration into Europe. 1071 1072 # From Teimuraz Abashidze (2005-11-07): 1073 # Government of Georgia ... decided to NOT CHANGE daylight savings time on 1074 # [Oct.] 30, as it was done before during last more than 10 years. 1075 # Currently, we are in fact GMT +4:00, as before 30 October it was GMT 1076 # +3:00.... The problem is, there is NO FORMAL LAW or governmental document 1077 # about it. As far as I can find, I was told, that there is no document, 1078 # because we just DIDN'T ISSUE document about switching to winter time.... 1079 # I don't know what can be done, especially knowing that some years ago our 1080 # DST rules where changed THREE TIMES during one month. 1081 1082 # Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7. 1083 # Byalokoz 1919 says Georgia was 2:59:11. 1084 # Go with Byalokoz. 1085 1086 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1087 Zone Asia/Tbilisi 2:59:11 - LMT 1880 1088 2:59:11 - TBMT 1924 May 2 # Tbilisi Mean Time 1089 3:00 - +03 1957 Mar 1090 4:00 RussiaAsia +04/+05 1991 Mar 31 2:00s 1091 3:00 RussiaAsia +03/+04 1992 1092 3:00 E-EurAsia +03/+04 1994 Sep lastSun 1093 4:00 E-EurAsia +04/+05 1996 Oct lastSun 1094 4:00 1:00 +05 1997 Mar lastSun 1095 4:00 E-EurAsia +04/+05 2004 Jun 27 1096 3:00 RussiaAsia +03/+04 2005 Mar lastSun 2:00 1097 4:00 - +04 1098 1099 # East Timor 1100 1101 # See Indonesia for the 1945 transition. 1102 1103 # From João Carrascalão, brother of the former governor of East Timor, in 1104 # East Timor may be late for its millennium 1105 # <https://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31): 1106 # Portugal tried to change the time forward in 1974 because the sun 1107 # rises too early but the suggestion raised a lot of problems with the 1108 # Timorese and I still don't think it would work today because it 1109 # conflicts with their way of life. 1110 1111 # From Paul Eggert (2000-12-04): 1112 # We don't have any record of the above attempt. 1113 # Most likely our records are incomplete, but we have no better data. 1114 1115 # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General 1116 # http://www.hri.org/news/world/undh/2000/00-08-16.undh.html 1117 # (2000-08-16): 1118 # The Cabinet of the East Timor Transition Administration decided 1119 # today to advance East Timor's time by one hour. The time change, 1120 # which will be permanent, with no seasonal adjustment, will happen at 1121 # midnight on Saturday, September 16. 1122 1123 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1124 Zone Asia/Dili 8:22:20 - LMT 1912 Jan 1 1125 8:00 - +08 1942 Feb 21 23:00 1126 9:00 - +09 1976 May 3 1127 8:00 - +08 2000 Sep 17 0:00 1128 9:00 - +09 1129 1130 # India 1131 1132 # British astronomer Henry Park Hollis disliked India Standard Time's offset: 1133 # "A new time system has been proposed for India, Further India, and Burmah. 1134 # The scheme suggested is that the times of the meridians 5½ and 6½ hours 1135 # east of Greenwich should be adopted in these territories. No reason is 1136 # given why hourly meridians five hours and six hours east should not be 1137 # chosen; a plan which would bring the time of India into harmony with 1138 # that of almost the whole of the civilised world." 1139 # Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. 1140 # 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 1141 1142 # From Ian P. Beacock, in "A brief history of (modern) time", The Atlantic 1143 # https://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/ 1144 # (2015-12-22): 1145 # In January 1906, several thousand cotton-mill workers rioted on the 1146 # outskirts of Bombay.... They were protesting the proposed abolition of 1147 # local time in favor of Indian Standard Time.... Journalists called this 1148 # dispute the "Battle of the Clocks." It lasted nearly half a century. 1149 1150 # From Paul Eggert (2017-04-20): 1151 # Good luck trying to nail down old timekeeping records in India. 1152 # "... in the nineteenth century ... Madras Observatory took its magnetic 1153 # measurements on Göttingen time, its meteorological measurements on Madras 1154 # (local) time, dropped its time ball on Greenwich (ocean navigator's) time, 1155 # and distributed civil (local time)." -- Bartky IR. Selling the true time: 1156 # 19th-century timekeeping in america. Stanford U Press (2000), 247 note 19. 1157 # "A more potent cause of resistance to the general adoption of the present 1158 # standard time lies in the fact that it is Madras time. The citizen of 1159 # Bombay, proud of being 'primus in Indis' and of Calcutta, equally proud of 1160 # his city being the Capital of India, and - for a part of the year - the Seat 1161 # of the Supreme Government, alike look down on Madras, and refuse to change 1162 # the time they are using, for that of what they regard as a benighted 1163 # Presidency; while Madras, having for long given the standard time to the 1164 # rest of India, would resist the adoption of any other Indian standard in its 1165 # place." -- Oldham RD. On Time in India: a suggestion for its improvement. 1166 # Proceedings of the Asiatic Society of Bengal (April 1899), 49-55. 1167 # 1168 # "In 1870 ... Madras time - 'now used by the telegraph and regulated from the 1169 # only government observatory' - was suggested as a standard railway time, 1170 # first to be adopted on the Great Indian Peninsular Railway (GIPR).... 1171 # Calcutta, Bombay, and Karachi, were to be allowed to continue with their 1172 # local time for civil purposes." - Prasad R. Tracks of Change: Railways and 1173 # Everyday Life in Colonial India. Cambridge University Press (2016), 145. 1174 # 1175 # Reed S, Low F. The Indian Year Book 1936-37. Bennett, Coleman, pp 27-8. 1176 # https://archive.org/details/in.ernet.dli.2015.282212 1177 # This lists +052110 as Madras local time used in railways, and says that on 1178 # 1906-01-01 railways and telegraphs in India switched to +0530. Some 1179 # municipalities retained their former time, and the time in Calcutta 1180 # continued to depend on whether you were at the railway station or at 1181 # government offices. Government time was at +055320 (according to Shanks) or 1182 # at +0554 (according to the Indian Year Book). Railway time is more 1183 # appropriate for our purposes, as it was better documented, it is what we do 1184 # elsewhere (e.g., Europe/London before 1880), and after 1906 it was 1185 # consistent in the region now identified by Asia/Kolkata. So, use railway 1186 # time for 1870-1941. Shanks is our only (and dubious) source for the 1187 # 1941-1945 data. 1188 1189 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1190 Zone Asia/Kolkata 5:53:28 - LMT 1854 Jun 28 # Kolkata 1191 5:53:20 - HMT 1870 # Howrah Mean Time? 1192 5:21:10 - MMT 1906 Jan 1 # Madras local time 1193 5:30 - IST 1941 Oct 1194 5:30 1:00 +0630 1942 May 15 1195 5:30 - IST 1942 Sep 1196 5:30 1:00 +0630 1945 Oct 15 1197 5:30 - IST 1198 # Since 1970 the following are like Asia/Kolkata: 1199 # Andaman Is 1200 # Lakshadweep (Laccadive, Minicoy and Amindivi Is) 1201 # Nicobar Is 1202 1203 # Indonesia 1204 # 1205 # From Paul Eggert (2014-09-06): 1206 # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia 1207 # civil time was 7:07:12.5; round to even for Jakarta. 1208 # 1209 # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger: 1210 # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime 1211 # says that Indonesia's time zones changed on 1988-01-01. Looking at some 1212 # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat 1213 # and Kalimantan Tengah) switching from UTC+8 to UTC+7. 1214 # 1215 # From Paul Eggert (2007-03-10): 1216 # Here is another correction to Shanks & Pottenger. 1217 # JohnTWB writes that Japanese forces did not surrender control in 1218 # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and 1219 # other formal surrender ceremonies were September 9, 11, and 13, plus 1220 # September 12 for the regional surrender to Mountbatten in Singapore. 1221 # These would be the earliest possible times for a change. 1222 # Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions 1223 # Traditionnelles, 1987, Paris) says that Java and Madura switched 1224 # from UT +09 to +07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura 1225 # (Hollandia). For now, assume all Indonesian locations other than Jayapura 1226 # switched on 1945-09-23. 1227 # 1228 # From Paul Eggert (2013-08-11): 1229 # Normally the tz database uses English-language abbreviations, but in 1230 # Indonesia it's typical to use Indonesian-language abbreviations even 1231 # when writing in English. For example, see the English-language 1232 # summary published by the Time and Frequency Laboratory of the 1233 # Research Center for Calibration, Instrumentation and Metrology, 1234 # Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29). 1235 # The time zone abbreviations and UT offsets are: 1236 # 1237 # WIB - +07 - Waktu Indonesia Barat (Indonesia western time) 1238 # WITA - +08 - Waktu Indonesia Tengah (Indonesia central time) 1239 # WIT - +09 - Waktu Indonesia Timur (Indonesia eastern time) 1240 # 1241 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1242 # Java, Sumatra 1243 Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10 1244 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, 1245 # but this must be a typo. 1246 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia 1247 7:20 - +0720 1932 Nov 1248 7:30 - +0730 1942 Mar 23 1249 9:00 - +09 1945 Sep 23 1250 7:30 - +0730 1948 May 1251 8:00 - +08 1950 May 1252 7:30 - +0730 1964 1253 7:00 - WIB 1254 # west and central Borneo 1255 Zone Asia/Pontianak 7:17:20 - LMT 1908 May 1256 7:17:20 - PMT 1932 Nov # Pontianak MT 1257 7:30 - +0730 1942 Jan 29 1258 9:00 - +09 1945 Sep 23 1259 7:30 - +0730 1948 May 1260 8:00 - +08 1950 May 1261 7:30 - +0730 1964 1262 8:00 - WITA 1988 Jan 1 1263 7:00 - WIB 1264 # Sulawesi, Lesser Sundas, east and south Borneo 1265 Zone Asia/Makassar 7:57:36 - LMT 1920 1266 7:57:36 - MMT 1932 Nov # Macassar MT 1267 8:00 - +08 1942 Feb 9 1268 9:00 - +09 1945 Sep 23 1269 8:00 - WITA 1270 # Maluku Islands, West Papua, Papua 1271 Zone Asia/Jayapura 9:22:48 - LMT 1932 Nov 1272 9:00 - +09 1944 Sep 1 1273 9:30 - +0930 1964 1274 9:00 - WIT 1275 1276 # Iran 1277 1278 # From Roozbeh Pournader (2003-03-15): 1279 # This is an English translation of what I just found (originally in Persian). 1280 # The Gregorian dates in brackets are mine: 1281 # 1282 # Official Newspaper No. 13548-1370/6/25 [1991-09-16] 1283 # No. 16760/T233 H 1370/6/10 [1991-09-01] 1284 # 1285 # The Rule About Change of the Official Time of the Country 1286 # 1287 # The Board of Ministers, in the meeting dated 1370/5/23 [1991-08-14], 1288 # based on the suggestion number 2221/D dated 1370/4/22 [1991-07-13] 1289 # of the Country's Organization for Official and Employment Affairs, 1290 # and referring to the law for equating the working hours of workers 1291 # and officers in the whole country dated 1359/4/23 [1980-07-14], and 1292 # for synchronizing the official times of the country, agreed that: 1293 # 1294 # The official time of the country will should move forward one hour 1295 # at the 24[:00] hours of the first day of Farvardin and should return 1296 # to its previous state at the 24[:00] hours of the 30th day of 1297 # Shahrivar. 1298 # 1299 # First Deputy to the President - Hassan Habibi 1300 # 1301 # From personal experience, that agrees with what has been followed 1302 # for at least the last 5 years. Before that, for a few years, the 1303 # date used was the first Thursday night of Farvardin and the last 1304 # Thursday night of Shahrivar, but I can't give exact dates.... 1305 # 1306 # From Roozbeh Pournader (2005-04-05): 1307 # The text of the Iranian law, in effect since 1925, clearly mentions 1308 # that the true solar year is the measure, and there is no arithmetic 1309 # leap year calculation involved. There has never been any serious 1310 # plan to change that law.... 1311 # 1312 # From Paul Eggert (2018-11-30): 1313 # Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter. 1314 # I used the following code in GNU Emacs 26.1 to generate the "Rule Iran" 1315 # lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's 1316 # cal-persia implementation of Birashk's approximation, which in the 1317 # 2008-2087 range disagrees with the the astronomical Persian calendar 1318 # for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), 1319 # so the following code special-case those years. See Table 15.1, page 264, of: 1320 # Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations: 1321 # The Ultimate Edition, Cambridge University Press (2018). 1322 # https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition 1323 # Page 258, footnote 2, of this book says there is some dispute over what will 1324 # happen in 2091 (and some other years after that), so this code 1325 # stops in 2087, as 2088 and 2089 agree with the "max" rule below. 1326 # (cl-loop 1327 # initially (require 'cal-persia) 1328 # with first-persian-year = 1387 1329 # with last-persian-year = 1466 1330 # ;; Exceptional years in the above range, 1331 # ;; from Reingold & Dershowitz Table 15.1, page 264: 1332 # with exceptional-persian-years = '(1404 1437) 1333 # with range-start = nil 1334 # for persian-year from first-persian-year to last-persian-year 1335 # do 1336 # (let* 1337 # ((exceptional-year-offset 1338 # (if (member persian-year exceptional-persian-years) 1 0)) 1339 # (beg-dst-absolute 1340 # (+ (calendar-persian-to-absolute (list 1 1 persian-year)) 1341 # exceptional-year-offset)) 1342 # (end-dst-absolute 1343 # (+ (calendar-persian-to-absolute (list 6 30 persian-year)) 1344 # exceptional-year-offset)) 1345 # (next-year-beg-dst-absolute 1346 # (+ (calendar-persian-to-absolute (list 1 1 (1+ persian-year))) 1347 # (if (member (1+ persian-year) exceptional-persian-years) 1 0))) 1348 # (beg-dst (calendar-gregorian-from-absolute beg-dst-absolute)) 1349 # (end-dst (calendar-gregorian-from-absolute end-dst-absolute)) 1350 # (next-year-beg-dst (calendar-gregorian-from-absolute 1351 # next-year-beg-dst-absolute)) 1352 # (year (calendar-extract-year beg-dst)) 1353 # (range-end (if range-start year "only"))) 1354 # (setq range-start (or range-start year)) 1355 # (when (or (/= (calendar-extract-day beg-dst) 1356 # (calendar-extract-day next-year-beg-dst)) 1357 # (= persian-year last-persian-year)) 1358 # (insert 1359 # (format 1360 # "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t1:00\t-\n" 1361 # range-start range-end 1362 # (calendar-month-name (calendar-extract-month beg-dst) t) 1363 # (calendar-extract-day beg-dst))) 1364 # (insert 1365 # (format 1366 # "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t0\t-\n" 1367 # range-start range-end 1368 # (calendar-month-name (calendar-extract-month end-dst) t) 1369 # (calendar-extract-day end-dst))) 1370 # (setq range-start nil)))) 1371 # 1372 # From Oscar van Vlijmen (2005-03-30), writing about future 1373 # discrepancies between cal-persia and the Iranian calendar: 1374 # For 2091 solar-longitude-after yields 2091-03-20 08:40:07.7 UT for 1375 # the vernal equinox and that gets so close to 12:00 some local 1376 # Iranian time that the definition of the correct location needs to be 1377 # known exactly, amongst other factors. 2157 is even closer: 1378 # 2157-03-20 08:37:15.5 UT. But the Gregorian year 2025 should give 1379 # no interpretation problem whatsoever. By the way, another instant 1380 # in the near future where there will be a discrepancy between 1381 # arithmetical and astronomical Iranian calendars will be in 2058: 1382 # vernal equinox on 2058-03-20 09:03:05.9 UT. The Java version of 1383 # Reingold's/Dershowitz' calculator gives correctly the Gregorian date 1384 # 2058-03-21 for 1 Farvardin 1437 (astronomical). 1385 # 1386 # From Steffen Thorsen (2006-03-22): 1387 # Several of my users have reported that Iran will not observe DST anymore: 1388 # http://www.irna.ir/en/news/view/line-17/0603193812164948.htm 1389 # 1390 # From Reuters (2007-09-16), with a heads-up from Jesper Nørgaard Welen: 1391 # ... the Guardian Council ... approved a law on Sunday to re-introduce 1392 # daylight saving time ... 1393 # https://uk.reuters.com/article/oilRpt/idUKBLA65048420070916 1394 # 1395 # From Roozbeh Pournader (2007-11-05): 1396 # This is quoted from Official Gazette of the Islamic Republic of 1397 # Iran, Volume 63, No. 18242, dated Tuesday 1386/6/24 1398 # [2007-10-16]. I am doing the best translation I can:... 1399 # The official time of the country will be moved forward for one hour 1400 # on the 24 hours of the first day of the month of Farvardin and will 1401 # be changed back to its previous state on the 24 hours of the 1402 # thirtieth day of Shahrivar. 1403 # 1404 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1405 Rule Iran 1978 1980 - Mar 20 24:00 1:00 - 1406 Rule Iran 1978 only - Oct 20 24:00 0 - 1407 Rule Iran 1979 only - Sep 18 24:00 0 - 1408 Rule Iran 1980 only - Sep 22 24:00 0 - 1409 Rule Iran 1991 only - May 2 24:00 1:00 - 1410 Rule Iran 1992 1995 - Mar 21 24:00 1:00 - 1411 Rule Iran 1991 1995 - Sep 21 24:00 0 - 1412 Rule Iran 1996 only - Mar 20 24:00 1:00 - 1413 Rule Iran 1996 only - Sep 20 24:00 0 - 1414 Rule Iran 1997 1999 - Mar 21 24:00 1:00 - 1415 Rule Iran 1997 1999 - Sep 21 24:00 0 - 1416 Rule Iran 2000 only - Mar 20 24:00 1:00 - 1417 Rule Iran 2000 only - Sep 20 24:00 0 - 1418 Rule Iran 2001 2003 - Mar 21 24:00 1:00 - 1419 Rule Iran 2001 2003 - Sep 21 24:00 0 - 1420 Rule Iran 2004 only - Mar 20 24:00 1:00 - 1421 Rule Iran 2004 only - Sep 20 24:00 0 - 1422 Rule Iran 2005 only - Mar 21 24:00 1:00 - 1423 Rule Iran 2005 only - Sep 21 24:00 0 - 1424 Rule Iran 2008 only - Mar 20 24:00 1:00 - 1425 Rule Iran 2008 only - Sep 20 24:00 0 - 1426 Rule Iran 2009 2011 - Mar 21 24:00 1:00 - 1427 Rule Iran 2009 2011 - Sep 21 24:00 0 - 1428 Rule Iran 2012 only - Mar 20 24:00 1:00 - 1429 Rule Iran 2012 only - Sep 20 24:00 0 - 1430 Rule Iran 2013 2015 - Mar 21 24:00 1:00 - 1431 Rule Iran 2013 2015 - Sep 21 24:00 0 - 1432 Rule Iran 2016 only - Mar 20 24:00 1:00 - 1433 Rule Iran 2016 only - Sep 20 24:00 0 - 1434 Rule Iran 2017 2019 - Mar 21 24:00 1:00 - 1435 Rule Iran 2017 2019 - Sep 21 24:00 0 - 1436 Rule Iran 2020 only - Mar 20 24:00 1:00 - 1437 Rule Iran 2020 only - Sep 20 24:00 0 - 1438 Rule Iran 2021 2023 - Mar 21 24:00 1:00 - 1439 Rule Iran 2021 2023 - Sep 21 24:00 0 - 1440 Rule Iran 2024 only - Mar 20 24:00 1:00 - 1441 Rule Iran 2024 only - Sep 20 24:00 0 - 1442 Rule Iran 2025 2027 - Mar 21 24:00 1:00 - 1443 Rule Iran 2025 2027 - Sep 21 24:00 0 - 1444 Rule Iran 2028 2029 - Mar 20 24:00 1:00 - 1445 Rule Iran 2028 2029 - Sep 20 24:00 0 - 1446 Rule Iran 2030 2031 - Mar 21 24:00 1:00 - 1447 Rule Iran 2030 2031 - Sep 21 24:00 0 - 1448 Rule Iran 2032 2033 - Mar 20 24:00 1:00 - 1449 Rule Iran 2032 2033 - Sep 20 24:00 0 - 1450 Rule Iran 2034 2035 - Mar 21 24:00 1:00 - 1451 Rule Iran 2034 2035 - Sep 21 24:00 0 - 1452 Rule Iran 2036 2037 - Mar 20 24:00 1:00 - 1453 Rule Iran 2036 2037 - Sep 20 24:00 0 - 1454 Rule Iran 2038 2039 - Mar 21 24:00 1:00 - 1455 Rule Iran 2038 2039 - Sep 21 24:00 0 - 1456 Rule Iran 2040 2041 - Mar 20 24:00 1:00 - 1457 Rule Iran 2040 2041 - Sep 20 24:00 0 - 1458 Rule Iran 2042 2043 - Mar 21 24:00 1:00 - 1459 Rule Iran 2042 2043 - Sep 21 24:00 0 - 1460 Rule Iran 2044 2045 - Mar 20 24:00 1:00 - 1461 Rule Iran 2044 2045 - Sep 20 24:00 0 - 1462 Rule Iran 2046 2047 - Mar 21 24:00 1:00 - 1463 Rule Iran 2046 2047 - Sep 21 24:00 0 - 1464 Rule Iran 2048 2049 - Mar 20 24:00 1:00 - 1465 Rule Iran 2048 2049 - Sep 20 24:00 0 - 1466 Rule Iran 2050 2051 - Mar 21 24:00 1:00 - 1467 Rule Iran 2050 2051 - Sep 21 24:00 0 - 1468 Rule Iran 2052 2053 - Mar 20 24:00 1:00 - 1469 Rule Iran 2052 2053 - Sep 20 24:00 0 - 1470 Rule Iran 2054 2055 - Mar 21 24:00 1:00 - 1471 Rule Iran 2054 2055 - Sep 21 24:00 0 - 1472 Rule Iran 2056 2057 - Mar 20 24:00 1:00 - 1473 Rule Iran 2056 2057 - Sep 20 24:00 0 - 1474 Rule Iran 2058 2059 - Mar 21 24:00 1:00 - 1475 Rule Iran 2058 2059 - Sep 21 24:00 0 - 1476 Rule Iran 2060 2062 - Mar 20 24:00 1:00 - 1477 Rule Iran 2060 2062 - Sep 20 24:00 0 - 1478 Rule Iran 2063 only - Mar 21 24:00 1:00 - 1479 Rule Iran 2063 only - Sep 21 24:00 0 - 1480 Rule Iran 2064 2066 - Mar 20 24:00 1:00 - 1481 Rule Iran 2064 2066 - Sep 20 24:00 0 - 1482 Rule Iran 2067 only - Mar 21 24:00 1:00 - 1483 Rule Iran 2067 only - Sep 21 24:00 0 - 1484 Rule Iran 2068 2070 - Mar 20 24:00 1:00 - 1485 Rule Iran 2068 2070 - Sep 20 24:00 0 - 1486 Rule Iran 2071 only - Mar 21 24:00 1:00 - 1487 Rule Iran 2071 only - Sep 21 24:00 0 - 1488 Rule Iran 2072 2074 - Mar 20 24:00 1:00 - 1489 Rule Iran 2072 2074 - Sep 20 24:00 0 - 1490 Rule Iran 2075 only - Mar 21 24:00 1:00 - 1491 Rule Iran 2075 only - Sep 21 24:00 0 - 1492 Rule Iran 2076 2078 - Mar 20 24:00 1:00 - 1493 Rule Iran 2076 2078 - Sep 20 24:00 0 - 1494 Rule Iran 2079 only - Mar 21 24:00 1:00 - 1495 Rule Iran 2079 only - Sep 21 24:00 0 - 1496 Rule Iran 2080 2082 - Mar 20 24:00 1:00 - 1497 Rule Iran 2080 2082 - Sep 20 24:00 0 - 1498 Rule Iran 2083 only - Mar 21 24:00 1:00 - 1499 Rule Iran 2083 only - Sep 21 24:00 0 - 1500 Rule Iran 2084 2086 - Mar 20 24:00 1:00 - 1501 Rule Iran 2084 2086 - Sep 20 24:00 0 - 1502 Rule Iran 2087 only - Mar 21 24:00 1:00 - 1503 Rule Iran 2087 only - Sep 21 24:00 0 - 1504 # 1505 # The following rules are approximations starting in the year 2088. 1506 # These are the best post-2088 approximations available, given the 1507 # restrictions of a single rule using ordinary Gregorian dates. 1508 # At some point this table will need to be extended, though quite 1509 # possibly Iran will change the rules first. 1510 Rule Iran 2088 max - Mar 20 24:00 1:00 - 1511 Rule Iran 2088 max - Sep 20 24:00 0 - 1512 1513 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1514 Zone Asia/Tehran 3:25:44 - LMT 1916 1515 3:25:44 - TMT 1946 # Tehran Mean Time 1516 3:30 - +0330 1977 Nov 1517 4:00 Iran +04/+05 1979 1518 3:30 Iran +0330/+0430 1519 1520 1521 # Iraq 1522 # 1523 # From Jonathan Lennox (2000-06-12): 1524 # An article in this week's Economist ("Inside the Saddam-free zone", p. 50 in 1525 # the U.S. edition) on the Iraqi Kurds contains a paragraph: 1526 # "The three northern provinces ... switched their clocks this spring and 1527 # are an hour ahead of Baghdad." 1528 # 1529 # But Rives McDow (2000-06-18) quotes a contact in Iraqi-Kurdistan as follows: 1530 # In the past, some Kurdish nationalists, as a protest to the Iraqi 1531 # Government, did not adhere to daylight saving time. They referred 1532 # to daylight saving as Saddam time. But, as of today, the time zone 1533 # in Iraqi-Kurdistan is on standard time with Baghdad, Iraq. 1534 # 1535 # So we'll ignore the Economist's claim. 1536 1537 # From Steffen Thorsen (2008-03-10): 1538 # The cabinet in Iraq abolished DST last week, according to the following 1539 # news sources (in Arabic): 1540 # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html 1541 # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublication=4&NrArticle=71743&NrIssue=1&NrSection=10 1542 # 1543 # We have published a short article in English about the change: 1544 # https://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html 1545 1546 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1547 Rule Iraq 1982 only - May 1 0:00 1:00 - 1548 Rule Iraq 1982 1984 - Oct 1 0:00 0 - 1549 Rule Iraq 1983 only - Mar 31 0:00 1:00 - 1550 Rule Iraq 1984 1985 - Apr 1 0:00 1:00 - 1551 Rule Iraq 1985 1990 - Sep lastSun 1:00s 0 - 1552 Rule Iraq 1986 1990 - Mar lastSun 1:00s 1:00 - 1553 # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the ':01' is a typo. 1554 # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this. 1555 # 1556 Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 - 1557 Rule Iraq 1991 2007 - Oct 1 3:00s 0 - 1558 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1559 Zone Asia/Baghdad 2:57:40 - LMT 1890 1560 2:57:36 - BMT 1918 # Baghdad Mean Time? 1561 3:00 - +03 1982 May 1562 3:00 Iraq +03/+04 1563 1564 1565 ############################################################################### 1566 1567 # Israel 1568 1569 # From Ephraim Silverberg (2001-01-11): 1570 # 1571 # I coined "IST/IDT" circa 1988. Until then there were three 1572 # different abbreviations in use: 1573 # 1574 # JST Jerusalem Standard Time [Danny Braniss, Hebrew University] 1575 # IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion] 1576 # EEST Eastern Europe Standard Time [used by almost everyone else] 1577 # 1578 # Since timezones should be called by country and not capital cities, 1579 # I ruled out JST. As Israel is in Asia Minor and not Eastern Europe, 1580 # EEST was equally unacceptable. Since "zonal" was not compatible with 1581 # any other timezone abbreviation, I felt that 'IST' was the way to go 1582 # and, indeed, it has received almost universal acceptance in timezone 1583 # settings in Israeli computers. 1584 # 1585 # In any case, I am happy to share timezone abbreviations with India, 1586 # high on my favorite-country list (and not only because my wife's 1587 # family is from India). 1588 1589 # From Shanks & Pottenger: 1590 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1591 Rule Zion 1940 only - Jun 1 0:00 1:00 D 1592 Rule Zion 1942 1944 - Nov 1 0:00 0 S 1593 Rule Zion 1943 only - Apr 1 2:00 1:00 D 1594 Rule Zion 1944 only - Apr 1 0:00 1:00 D 1595 Rule Zion 1945 only - Apr 16 0:00 1:00 D 1596 Rule Zion 1945 only - Nov 1 2:00 0 S 1597 Rule Zion 1946 only - Apr 16 2:00 1:00 D 1598 Rule Zion 1946 only - Nov 1 0:00 0 S 1599 Rule Zion 1948 only - May 23 0:00 2:00 DD 1600 Rule Zion 1948 only - Sep 1 0:00 1:00 D 1601 Rule Zion 1948 1949 - Nov 1 2:00 0 S 1602 Rule Zion 1949 only - May 1 0:00 1:00 D 1603 Rule Zion 1950 only - Apr 16 0:00 1:00 D 1604 Rule Zion 1950 only - Sep 15 3:00 0 S 1605 Rule Zion 1951 only - Apr 1 0:00 1:00 D 1606 Rule Zion 1951 only - Nov 11 3:00 0 S 1607 Rule Zion 1952 only - Apr 20 2:00 1:00 D 1608 Rule Zion 1952 only - Oct 19 3:00 0 S 1609 Rule Zion 1953 only - Apr 12 2:00 1:00 D 1610 Rule Zion 1953 only - Sep 13 3:00 0 S 1611 Rule Zion 1954 only - Jun 13 0:00 1:00 D 1612 Rule Zion 1954 only - Sep 12 0:00 0 S 1613 Rule Zion 1955 only - Jun 11 2:00 1:00 D 1614 Rule Zion 1955 only - Sep 11 0:00 0 S 1615 Rule Zion 1956 only - Jun 3 0:00 1:00 D 1616 Rule Zion 1956 only - Sep 30 3:00 0 S 1617 Rule Zion 1957 only - Apr 29 2:00 1:00 D 1618 Rule Zion 1957 only - Sep 22 0:00 0 S 1619 Rule Zion 1974 only - Jul 7 0:00 1:00 D 1620 Rule Zion 1974 only - Oct 13 0:00 0 S 1621 Rule Zion 1975 only - Apr 20 0:00 1:00 D 1622 Rule Zion 1975 only - Aug 31 0:00 0 S 1623 Rule Zion 1985 only - Apr 14 0:00 1:00 D 1624 Rule Zion 1985 only - Sep 15 0:00 0 S 1625 Rule Zion 1986 only - May 18 0:00 1:00 D 1626 Rule Zion 1986 only - Sep 7 0:00 0 S 1627 Rule Zion 1987 only - Apr 15 0:00 1:00 D 1628 Rule Zion 1987 only - Sep 13 0:00 0 S 1629 1630 # From Avigdor Finkelstein (2014-03-05): 1631 # I check the Parliament (Knesset) records and there it's stated that the 1632 # [1988] transition should take place on Saturday night, when the Sabbath 1633 # ends and changes to Sunday. 1634 Rule Zion 1988 only - Apr 10 0:00 1:00 D 1635 Rule Zion 1988 only - Sep 4 0:00 0 S 1636 1637 # From Ephraim Silverberg 1638 # (1997-03-04, 1998-03-16, 1998-12-28, 2000-01-17, 2000-07-25, 2004-12-22, 1639 # and 2005-02-17): 1640 1641 # According to the Office of the Secretary General of the Ministry of 1642 # Interior, there is NO set rule for Daylight-Savings/Standard time changes. 1643 # One thing is entrenched in law, however: that there must be at least 150 1644 # days of daylight savings time annually. From 1993-1998, the change to 1645 # daylight savings time was on a Friday morning from midnight IST to 1646 # 1 a.m IDT; up until 1998, the change back to standard time was on a 1647 # Saturday night from midnight daylight savings time to 11 p.m. standard 1648 # time. 1996 is an exception to this rule where the change back to standard 1649 # time took place on Sunday night instead of Saturday night to avoid 1650 # conflicts with the Jewish New Year. In 1999, the change to 1651 # daylight savings time was still on a Friday morning but from 1652 # 2 a.m. IST to 3 a.m. IDT; furthermore, the change back to standard time 1653 # was also on a Friday morning from 2 a.m. IDT to 1 a.m. IST for 1654 # 1999 only. In the year 2000, the change to daylight savings time was 1655 # similar to 1999, but although the change back will be on a Friday, it 1656 # will take place from 1 a.m. IDT to midnight IST. Starting in 2001, all 1657 # changes to/from will take place at 1 a.m. old time, but now there is no 1658 # rule as to what day of the week it will take place in as the start date 1659 # (except in 2003) is the night after the Passover Seder (i.e. the eve 1660 # of the 16th of Nisan in the lunar Hebrew calendar) and the end date 1661 # (except in 2002) is three nights before Yom Kippur [Day of Atonement] 1662 # (the eve of the 7th of Tishrei in the lunar Hebrew calendar). 1663 1664 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1665 Rule Zion 1989 only - Apr 30 0:00 1:00 D 1666 Rule Zion 1989 only - Sep 3 0:00 0 S 1667 Rule Zion 1990 only - Mar 25 0:00 1:00 D 1668 Rule Zion 1990 only - Aug 26 0:00 0 S 1669 Rule Zion 1991 only - Mar 24 0:00 1:00 D 1670 Rule Zion 1991 only - Sep 1 0:00 0 S 1671 Rule Zion 1992 only - Mar 29 0:00 1:00 D 1672 Rule Zion 1992 only - Sep 6 0:00 0 S 1673 Rule Zion 1993 only - Apr 2 0:00 1:00 D 1674 Rule Zion 1993 only - Sep 5 0:00 0 S 1675 1676 # The dates for 1994-1995 were obtained from Office of the Spokeswoman for the 1677 # Ministry of Interior, Jerusalem, Israel. The spokeswoman can be reached by 1678 # calling the office directly at 972-2-6701447 or 972-2-6701448. 1679 1680 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1681 Rule Zion 1994 only - Apr 1 0:00 1:00 D 1682 Rule Zion 1994 only - Aug 28 0:00 0 S 1683 Rule Zion 1995 only - Mar 31 0:00 1:00 D 1684 Rule Zion 1995 only - Sep 3 0:00 0 S 1685 1686 # The dates for 1996 were determined by the Minister of Interior of the 1687 # time, Haim Ramon. The official announcement regarding 1996-1998 1688 # (with the dates for 1997-1998 no longer being relevant) can be viewed at: 1689 # 1690 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/1996-1998.ramon.ps.gz 1691 # 1692 # The dates for 1997-1998 were altered by his successor, Rabbi Eli Suissa. 1693 # 1694 # The official announcements for the years 1997-1999 can be viewed at: 1695 # 1696 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/YYYY.ps.gz 1697 # 1698 # where YYYY is the relevant year. 1699 1700 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1701 Rule Zion 1996 only - Mar 15 0:00 1:00 D 1702 Rule Zion 1996 only - Sep 16 0:00 0 S 1703 Rule Zion 1997 only - Mar 21 0:00 1:00 D 1704 Rule Zion 1997 only - Sep 14 0:00 0 S 1705 Rule Zion 1998 only - Mar 20 0:00 1:00 D 1706 Rule Zion 1998 only - Sep 6 0:00 0 S 1707 Rule Zion 1999 only - Apr 2 2:00 1:00 D 1708 Rule Zion 1999 only - Sep 3 2:00 0 S 1709 1710 # The Knesset Interior Committee has changed the dates for 2000 for 1711 # the third time in just over a year and have set new dates for the 1712 # years 2001-2004 as well. 1713 # 1714 # The official announcement for the start date of 2000 can be viewed at: 1715 # 1716 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-start.ps.gz 1717 # 1718 # The official announcement for the end date of 2000 and the dates 1719 # for the years 2001-2004 can be viewed at: 1720 # 1721 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2000-2004.ps.gz 1722 1723 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1724 Rule Zion 2000 only - Apr 14 2:00 1:00 D 1725 Rule Zion 2000 only - Oct 6 1:00 0 S 1726 Rule Zion 2001 only - Apr 9 1:00 1:00 D 1727 Rule Zion 2001 only - Sep 24 1:00 0 S 1728 Rule Zion 2002 only - Mar 29 1:00 1:00 D 1729 Rule Zion 2002 only - Oct 7 1:00 0 S 1730 Rule Zion 2003 only - Mar 28 1:00 1:00 D 1731 Rule Zion 2003 only - Oct 3 1:00 0 S 1732 Rule Zion 2004 only - Apr 7 1:00 1:00 D 1733 Rule Zion 2004 only - Sep 22 1:00 0 S 1734 1735 # The proposed law agreed upon by the Knesset Interior Committee on 1736 # 2005-02-14 is that, for 2005 and beyond, DST starts at 02:00 the 1737 # last Friday before April 2nd (i.e. the last Friday in March or April 1738 # 1st itself if it falls on a Friday) and ends at 02:00 on the Saturday 1739 # night _before_ the fast of Yom Kippur. 1740 # 1741 # Those who can read Hebrew can view the announcement at: 1742 # 1743 # ftp://ftp.cs.huji.ac.il/pub/tz/announcements/2005+beyond.ps 1744 1745 # From Paul Eggert (2012-10-26): 1746 # I used Ephraim Silverberg's dst-israel.el program 1747 # <ftp://ftp.cs.huji.ac.il/pub/tz/software/dst-israel.el> (2005-02-20) 1748 # along with Ed Reingold's cal-hebrew in GNU Emacs 21.4, 1749 # to generate the transitions from 2005 through 2012. 1750 # (I replaced "lastFri" with "Fri>=26" by hand.) 1751 # The spring transitions all correspond to the following Rule: 1752 # 1753 # Rule Zion 2005 2012 - Mar Fri>=26 2:00 1:00 D 1754 # 1755 # but older zic implementations (e.g., Solaris 8) do not support 1756 # "Fri>=26" to mean April 1 in years like 2005, so for now we list the 1757 # springtime transitions explicitly. 1758 1759 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1760 Rule Zion 2005 only - Apr 1 2:00 1:00 D 1761 Rule Zion 2005 only - Oct 9 2:00 0 S 1762 Rule Zion 2006 2010 - Mar Fri>=26 2:00 1:00 D 1763 Rule Zion 2006 only - Oct 1 2:00 0 S 1764 Rule Zion 2007 only - Sep 16 2:00 0 S 1765 Rule Zion 2008 only - Oct 5 2:00 0 S 1766 Rule Zion 2009 only - Sep 27 2:00 0 S 1767 Rule Zion 2010 only - Sep 12 2:00 0 S 1768 Rule Zion 2011 only - Apr 1 2:00 1:00 D 1769 Rule Zion 2011 only - Oct 2 2:00 0 S 1770 Rule Zion 2012 only - Mar Fri>=26 2:00 1:00 D 1771 Rule Zion 2012 only - Sep 23 2:00 0 S 1772 1773 # From Ephraim Silverberg (2013-06-27): 1774 # On June 23, 2013, the Israeli government approved changes to the 1775 # Time Decree Law. The next day, the changes passed the First Reading 1776 # in the Knesset. The law is expected to pass the Second and Third 1777 # (final) Readings by the beginning of September 2013. 1778 # 1779 # As of 2013, DST starts at 02:00 on the Friday before the last Sunday 1780 # in March. DST ends at 02:00 on the last Sunday of October. 1781 1782 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1783 Rule Zion 2013 max - Mar Fri>=23 2:00 1:00 D 1784 Rule Zion 2013 max - Oct lastSun 2:00 0 S 1785 1786 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1787 Zone Asia/Jerusalem 2:20:54 - LMT 1880 1788 2:20:40 - JMT 1918 # Jerusalem Mean Time? 1789 2:00 Zion I%sT 1790 1791 1792 1793 ############################################################################### 1794 1795 # Japan 1796 1797 # '9:00' and 'JST' is from Guy Harris. 1798 1799 # From Paul Eggert (1995-03-06): 1800 # Today's _Asahi Evening News_ (page 4) reports that Japan had 1801 # daylight saving between 1948 and 1951, but "the system was discontinued 1802 # because the public believed it would lead to longer working hours." 1803 1804 # From Mayumi Negishi in the 2005-08-10 Japan Times: 1805 # http://www.japantimes.co.jp/cgi-bin/getarticle.pl5?nn20050810f2.htm 1806 # Occupation authorities imposed daylight-saving time on Japan on 1807 # [1948-05-01].... But lack of prior debate and the execution of 1808 # daylight-saving time just three days after the bill was passed generated 1809 # deep hatred of the concept.... The Diet unceremoniously passed a bill to 1810 # dump the unpopular system in October 1951, less than a month after the San 1811 # Francisco Peace Treaty was signed. (A government poll in 1951 showed 53% 1812 # of the Japanese wanted to scrap daylight-saving time, as opposed to 30% who 1813 # wanted to keep it.) 1814 1815 # From Takayuki Nikai (2018-01-19): 1816 # The source of information is Japanese law. 1817 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00219480428029.htm 1818 # http://www.shugiin.go.jp/internet/itdb_housei.nsf/html/houritsu/00719500331039.htm 1819 # ... In summary, it is written as follows. From 24:00 on the first Saturday 1820 # in May, until 0:00 on the day after the second Saturday in September. 1821 1822 # From Phake Nick (2018-09-27): 1823 # [T]he webpage authored by National Astronomical Observatory of Japan 1824 # https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EF.html 1825 # ... mentioned that using Showa 23 (year 1948) as example, 13pm of September 1826 # 11 in summer time will equal to 0am of September 12 in standard time. 1827 # It cited a document issued by the Liaison Office which briefly existed 1828 # during the postwar period of Japan, where the detail on implementation 1829 # of the summer time is described in the document. 1830 # https://eco.mtk.nao.ac.jp/koyomi/wiki/BBFEB9EF2FB2C6BBFEB9EFB2C6BBFEB9EFA4CEBCC2BBDCA4CBA4C4A4A4A4C6.pdf 1831 # The text in the document do instruct a fall back to occur at 1832 # September 11, 13pm in summer time, while ordinary citizens can 1833 # change the clock before they sleep. 1834 # 1835 # From Paul Eggert (2018-09-27): 1836 # This instruction is equivalent to "Sat>=8 25:00", so use that. zic treats 1837 # it like "Sun>=9 01:00", which is not quite the same but is the best we can 1838 # do in any POSIX or C platform. The "25:00" assumes zic from 2007 or later, 1839 # which should be safe now. 1840 1841 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1842 Rule Japan 1948 only - May Sat>=1 24:00 1:00 D 1843 Rule Japan 1948 1951 - Sep Sun>=9 1:00 0 S 1844 Rule Japan 1949 only - Apr Sat>=1 24:00 1:00 D 1845 Rule Japan 1950 1951 - May Sat>=1 24:00 1:00 D 1846 1847 # From Hideyuki Suzuki (1998-11-09): 1848 # 'Tokyo' usually stands for the former location of Tokyo Astronomical 1849 # Observatory: 139° 44' 40.90" E (9h 18m 58.727s), 35° 39' 16.0" N. 1850 # This data is from 'Rika Nenpyou (Chronological Scientific Tables) 1996' 1851 # edited by National Astronomical Observatory of Japan.... 1852 # JST (Japan Standard Time) has been used since 1888-01-01 00:00 (JST). 1853 # The law is enacted on 1886-07-07. 1854 1855 # From Hideyuki Suzuki (1998-11-16): 1856 # The ordinance No. 51 (1886) established "standard time" in Japan, 1857 # which stands for the time on 135° E. 1858 # In the ordinance No. 167 (1895), "standard time" was renamed to "central 1859 # standard time". And the same ordinance also established "western standard 1860 # time", which stands for the time on 120° E.... But "western standard 1861 # time" was abolished in the ordinance No. 529 (1937). In the ordinance No. 1862 # 167, there is no mention regarding for what place western standard time is 1863 # standard.... 1864 # 1865 # I wrote "ordinance" above, but I don't know how to translate. 1866 # In Japanese it's "chokurei", which means ordinance from emperor. 1867 1868 # From Yu-Cheng Chuang (2013-07-12): 1869 # ...the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause 1870 # about standard time" ... The adoption began from Jan 1, 1896. 1871 # https://ja.wikisource.org/wiki/標準時ニ關スル件_(公布時) 1872 # 1873 # ...the Showa Emperor announced Ordinance No. 529 of Showa Year 12 ... which 1874 # means the whole Japan territory, including later occupations, adopt Japan 1875 # Central Time (UT+9). The adoption began on Oct 1, 1937. 1876 # https://ja.wikisource.org/wiki/明治二十八年勅令第百六十七號標準時ニ關スル件中改正ノ件 1877 1878 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1879 Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 1880 9:00 Japan J%sT 1881 # Since 1938, all Japanese possessions have been like Asia/Tokyo, 1882 # except that Truk (Chuuk), Ponape (Pohnpei), and Jaluit (Kosrae) did not 1883 # switch from +10 to +09 until 1941-04-01; see the 'australasia' file. 1884 1885 # Jordan 1886 # 1887 # From <http://star.arabia.com/990701/JO9.html> 1888 # Jordan Week (1999-07-01) via Steffen Thorsen (1999-09-09): 1889 # Clocks in Jordan were forwarded one hour on Wednesday at midnight, 1890 # in accordance with the government's decision to implement summer time 1891 # all year round. 1892 # 1893 # From <http://star.arabia.com/990930/JO9.html> 1894 # Jordan Week (1999-09-30) via Steffen Thorsen (1999-11-09): 1895 # Winter time starts today Thursday, 30 September. Clocks will be turned back 1896 # by one hour. This is the latest government decision and it's final! 1897 # The decision was taken because of the increase in working hours in 1898 # government's departments from six to seven hours. 1899 # 1900 # From Paul Eggert (2005-11-22): 1901 # Starting 2003 transitions are from Steffen Thorsen's web site timeanddate.com. 1902 # 1903 # From Steffen Thorsen (2005-11-23): 1904 # For Jordan I have received multiple independent user reports every year 1905 # about DST end dates, as the end-rule is different every year. 1906 # 1907 # From Steffen Thorsen (2006-10-01), after a heads-up from Hilal Malawi: 1908 # http://www.petranews.gov.jo/nepras/2006/Sep/05/4000.htm 1909 # "Jordan will switch to winter time on Friday, October 27". 1910 # 1911 1912 # From Steffen Thorsen (2009-04-02): 1913 # This single one might be good enough, (2009-03-24, Arabic): 1914 # http://petra.gov.jo/Artical.aspx?Lng=2&Section=8&Artical=95279 1915 # 1916 # Google's translation: 1917 # 1918 # > The Council of Ministers decided in 2002 to adopt the principle of timely 1919 # > submission of the summer at 60 minutes as of midnight on the last Thursday 1920 # > of the month of March of each year. 1921 # 1922 # So - this means the midnight between Thursday and Friday since 2002. 1923 1924 # From Arthur David Olson (2009-04-06): 1925 # We still have Jordan switching to DST on Thursdays in 2000 and 2001. 1926 1927 # From Steffen Thorsen (2012-10-25): 1928 # Yesterday the government in Jordan announced that they will not 1929 # switch back to standard time this winter, so the will stay on DST 1930 # until about the same time next year (at least). 1931 # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?NewsID=88950 1932 1933 # From Steffen Thorsen (2013-12-11): 1934 # Jordan Times and other sources say that Jordan is going back to 1935 # UTC+2 on 2013-12-19 at midnight: 1936 # http://jordantimes.com/govt-decides-to-switch-back-to-wintertime 1937 # Official, in Arabic: 1938 # http://www.petra.gov.jo/public_news/Nws_NewsDetails.aspx?Menu_ID=&Site_Id=2&lang=1&NewsID=133230&CatID=14 1939 # ... Our background/permalink about it 1940 # https://www.timeanddate.com/news/time/jordan-reverses-dst-decision.html 1941 # ... 1942 # http://www.petra.gov.jo/Public_News/Nws_NewsDetails.aspx?lang=2&site_id=1&NewsID=133313&Type=P 1943 # ... says midnight for the coming one and 1:00 for the ones in the future 1944 # (and they will use DST again next year, using the normal schedule). 1945 1946 # From Paul Eggert (2013-12-11): 1947 # As Steffen suggested, consider the past 21-month experiment to be DST. 1948 1949 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 1950 Rule Jordan 1973 only - Jun 6 0:00 1:00 S 1951 Rule Jordan 1973 1975 - Oct 1 0:00 0 - 1952 Rule Jordan 1974 1977 - May 1 0:00 1:00 S 1953 Rule Jordan 1976 only - Nov 1 0:00 0 - 1954 Rule Jordan 1977 only - Oct 1 0:00 0 - 1955 Rule Jordan 1978 only - Apr 30 0:00 1:00 S 1956 Rule Jordan 1978 only - Sep 30 0:00 0 - 1957 Rule Jordan 1985 only - Apr 1 0:00 1:00 S 1958 Rule Jordan 1985 only - Oct 1 0:00 0 - 1959 Rule Jordan 1986 1988 - Apr Fri>=1 0:00 1:00 S 1960 Rule Jordan 1986 1990 - Oct Fri>=1 0:00 0 - 1961 Rule Jordan 1989 only - May 8 0:00 1:00 S 1962 Rule Jordan 1990 only - Apr 27 0:00 1:00 S 1963 Rule Jordan 1991 only - Apr 17 0:00 1:00 S 1964 Rule Jordan 1991 only - Sep 27 0:00 0 - 1965 Rule Jordan 1992 only - Apr 10 0:00 1:00 S 1966 Rule Jordan 1992 1993 - Oct Fri>=1 0:00 0 - 1967 Rule Jordan 1993 1998 - Apr Fri>=1 0:00 1:00 S 1968 Rule Jordan 1994 only - Sep Fri>=15 0:00 0 - 1969 Rule Jordan 1995 1998 - Sep Fri>=15 0:00s 0 - 1970 Rule Jordan 1999 only - Jul 1 0:00s 1:00 S 1971 Rule Jordan 1999 2002 - Sep lastFri 0:00s 0 - 1972 Rule Jordan 2000 2001 - Mar lastThu 0:00s 1:00 S 1973 Rule Jordan 2002 2012 - Mar lastThu 24:00 1:00 S 1974 Rule Jordan 2003 only - Oct 24 0:00s 0 - 1975 Rule Jordan 2004 only - Oct 15 0:00s 0 - 1976 Rule Jordan 2005 only - Sep lastFri 0:00s 0 - 1977 Rule Jordan 2006 2011 - Oct lastFri 0:00s 0 - 1978 Rule Jordan 2013 only - Dec 20 0:00 0 - 1979 Rule Jordan 2014 max - Mar lastThu 24:00 1:00 S 1980 Rule Jordan 2014 max - Oct lastFri 0:00s 0 - 1981 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 1982 Zone Asia/Amman 2:23:44 - LMT 1931 1983 2:00 Jordan EE%sT 1984 1985 1986 # Kazakhstan 1987 1988 # From Kazakhstan Embassy's News Bulletin No. 11 1989 # <http://www.kazsociety.org.uk/news/2005/03/30.htm> (2005-03-21): 1990 # The Government of Kazakhstan passed a resolution March 15 abolishing 1991 # daylight saving time citing lack of economic benefits and health 1992 # complications coupled with a decrease in productivity. 1993 # 1994 # From Branislav Kojic (in Astana) via Gwillim Law (2005-06-28): 1995 # ... what happened was that the former Kazakhstan Eastern time zone 1996 # was "blended" with the Central zone. Therefore, Kazakhstan now has 1997 # two time zones, and difference between them is one hour. The zone 1998 # closer to UTC is the former Western zone (probably still called the 1999 # same), encompassing four provinces in the west: Aqtöbe, Atyraū, 2000 # Mangghystaū, and West Kazakhstan. The other zone encompasses 2001 # everything else.... I guess that would make Kazakhstan time zones 2002 # de jure UTC+5 and UTC+6 respectively. 2003 2004 # From Stepan Golosunov (2016-03-27): 2005 # Review of the linked documents from http://adilet.zan.kz/ 2006 # produced the following data for post-1991 Kazakhstan: 2007 # 2008 # 0. Act of the Cabinet of Ministers of the USSR 2009 # from 1991-02-04 No. 20 2010 # http://pravo.gov.ru/proxy/ips/?docbody=&nd=102010545 2011 # removed the extra hour ("decree time") on the territory of the USSR 2012 # starting with the last Sunday of March 1991. 2013 # It also allowed (but not mandated) Kazakh SSR, Kirghiz SSR, Tajik SSR, 2014 # Turkmen SSR and Uzbek SSR to not have "summer" time. 2015 # 2016 # The 1992-01-13 act also refers to the act of the Cabinet of Ministers 2017 # of the Kazakh SSR from 1991-03-20 No. 170 "About the act of the Cabinet 2018 # of Ministers of the USSR from 1991-02-04 No. 20" but I didn't found its 2019 # text. 2020 # 2021 # According to Izvestia newspaper No. 68 (23334) from 1991-03-20 2022 # (page 6; available at http://libinfo.org/newsr/newsr2574.djvu via 2023 # http://libinfo.org/index.php?id=58564) on 1991-03-31 at 2:00 during 2024 # transition to "summer" time: 2025 # Republic of Georgia, Latvian SSR, Lithuanian SSR, SSR Moldova, 2026 # Estonian SSR; Komi ASSR; Kaliningrad oblast; Nenets autonomous okrug 2027 # were to move clocks 1 hour forward. 2028 # Kazakh SSR (excluding Uralsk oblast); Republic of Kyrgyzstan, Tajik 2029 # SSR; Andijan, Jizzakh, Namangan, Sirdarya, Tashkent, Fergana oblasts 2030 # of the Uzbek SSR were to move clocks 1 hour backwards. 2031 # Other territories were to not move clocks. 2032 # When the "summer" time would end on 1991-09-29, clocks were to be 2033 # moved 1 hour backwards on the territory of the USSR excluding 2034 # Kazakhstan, Kirghizia, Uzbekistan, Turkmenia, Tajikistan. 2035 # 2036 # Apparently there were last minute changes. Apparently Kazakh act No. 170 2037 # was one of such changes. 2038 # 2039 # https://ru.wikipedia.org/wiki/Декретное время 2040 # claims that Sovetskaya Rossiya newspaper on 1991-03-29 published that 2041 # Nenets autonomous okrug, Komi and Kazakhstan (excluding Uralsk oblast) 2042 # were to not move clocks and Uralsk oblast was to move clocks 2043 # forward; on 1991-09-29 Kazakhstan was to move clocks backwards. 2044 # (Probably there were changes even after that publication. There is an 2045 # article claiming that Kaliningrad oblast decided on 1991-03-29 to not 2046 # move clocks.) 2047 # 2048 # This implies that on 1991-03-31 Asia/Oral remained on +04/+05 while 2049 # the rest of Kazakhstan switched from +06/+07 to +05/06 or from +05/06 2050 # to +04/+05. It's unclear how Qyzylorda oblast moved into the fifth 2051 # time belt. (By switching from +04/+05 to +05/+06 on 1991-09-29?) ... 2052 # 2053 # 1. Act of the Cabinet of Ministers of the Republic of Kazakhstan 2054 # from 1992-01-13 No. 28 2055 # http://adilet.zan.kz/rus/docs/P920000028_ 2056 # (text includes modification from the 1996 act) 2057 # introduced new rules for calculation of time, mirroring Russian 2058 # 1992-01-08 act. It specified that time would be calculated 2059 # according to time belts plus extra hour ("decree time"), moved clocks 2060 # on the whole territory of Kazakhstan 1 hour forward on 1992-01-19 at 2061 # 2:00, specified DST rules. It acknowledged that Kazakhstan was 2062 # located in the fourth and the fifth time belts and specified the 2063 # border between them to be located east of Qostanay and Aktyubinsk 2064 # oblasts (notably including Turgai and Qyzylorda oblasts into the fifth 2065 # time belt). 2066 # 2067 # This means switch on 1992-01-19 at 2:00 from +04/+05 to +05/+06 for 2068 # Asia/Aqtau, Asia/Aqtobe, Asia/Oral, Atyraū and Qostanay oblasts; from 2069 # +05/+06 to +06/+07 for Asia/Almaty and Asia/Qyzylorda (and Arkalyk).... 2070 # 2071 # 2. Act of the Cabinet of Ministers of the Republic of Kazakhstan 2072 # from 1992-03-27 No. 284 2073 # http://adilet.zan.kz/rus/docs/P920000284_ 2074 # cancels extra hour ("decree time") for Uralsk and Qyzylorda oblasts 2075 # since the last Sunday of March 1992, while keeping them in the fourth 2076 # and the fifth time belts respectively. 2077 # 2078 # 3. Order of the Prime Minister of the Republic of Kazakhstan 2079 # from 1994-09-23 No. 384 2080 # http://adilet.zan.kz/rus/docs/R940000384_ 2081 # cancels the extra hour ("decree time") on the territory of Mangghystaū 2082 # oblast since the last Sunday of September 1994 (saying that time on 2083 # the territory would correspond to the third time belt as a 2084 # result).... 2085 # 2086 # 4. Act of the Government of the Republic of Kazakhstan 2087 # from 1996-05-08 No. 575 2088 # http://adilet.zan.kz/rus/docs/P960000575_ 2089 # amends the 1992-01-13 act to end summer time in October instead 2090 # of September, mirroring identical Russian change from 1996-04-23 act. 2091 # 2092 # 5. Act of the Government of the Republic of Kazakhstan 2093 # from 1999-03-26 No. 305 2094 # http://adilet.zan.kz/rus/docs/P990000305_ 2095 # cancels the extra hour ("decree time") for Atyraū oblast since the 2096 # last Sunday of March 1999 while retaining the oblast in the fourth 2097 # time belt. 2098 # 2099 # This means change from +05/+06 to +04/+05.... 2100 # 2101 # 6. Act of the Government of the Republic of Kazakhstan 2102 # from 2000-11-23 No. 1749 2103 # http://adilet.zan.kz/rus/archive/docs/P000001749_/23.11.2000 2104 # replaces the previous five documents. 2105 # 2106 # The only changes I noticed are in definition of the border between the 2107 # fourth and the fifth time belts. They account for changes in spelling 2108 # and administrative division (splitting of Turgai oblast in 1997 2109 # probably changed time in territories incorporated into Qostanay oblast 2110 # (including Arkalyk) from +06/+07 to +05/+06) and move Qyzylorda oblast 2111 # from being in the fifth time belt and not using decree time into the 2112 # fourth time belt (no change in practice). 2113 # 2114 # 7. Act of the Government of the Republic of Kazakhstan 2115 # from 2003-12-29 No. 1342 2116 # http://adilet.zan.kz/rus/docs/P030001342_ 2117 # modified the 2000-11-23 act. No relevant changes, apparently. 2118 # 2119 # 8. Act of the Government of the Republic of Kazakhstan 2120 # from 2004-07-20 No. 775 2121 # http://adilet.zan.kz/rus/archive/docs/P040000775_/20.07.2004 2122 # modified the 2000-11-23 act to move Qostanay and Qyzylorda oblasts into 2123 # the fifth time belt and add Aktobe oblast to the list of regions not 2124 # using extra hour ("decree time"), leaving Kazakhstan with only 2 time 2125 # zones (+04/+05 and +06/+07). The changes were to be implemented 2126 # during DST transitions in 2004 and 2005 but the acts got radically 2127 # amended before implementation happened. 2128 # 2129 # 9. Act of the Government of the Republic of Kazakhstan 2130 # from 2004-09-15 No. 1059 2131 # http://adilet.zan.kz/rus/docs/P040001059_ 2132 # modified the 2000-11-23 act to remove exceptions from the "decree time" 2133 # (leaving Kazakhstan in +05/+06 and +06/+07 zones), amended the 2134 # 2004-07-20 act to implement changes for Atyraū, West Kazakhstan, 2135 # Qostanay, Qyzylorda and Mangghystaū oblasts by not moving clocks 2136 # during the 2004 transition to "winter" time. 2137 # 2138 # This means transition from +04/+05 to +05/+06 for Atyraū oblast (no 2139 # zone currently), Asia/Oral, Asia/Aqtau and transition from +05/+06 to 2140 # +06/+07 for Qostanay oblast (Qostanay and Arkalyk, no zones currently) 2141 # and Asia/Qyzylorda on 2004-10-31 at 3:00.... 2142 # 2143 # 10. Act of the Government of the Republic of Kazakhstan 2144 # from 2005-03-15 No. 231 2145 # http://adilet.zan.kz/rus/docs/P050000231_ 2146 # removes DST provisions from the 2000-11-23 act, removes most of the 2147 # (already implemented) provisions from the 2004-07-20 and 2004-09-15 2148 # acts, comes into effect 10 days after official publication. 2149 # The only practical effect seems to be the abolition of the summer 2150 # time. 2151 # 2152 # Unamended version of the act of the Government of the Russian Federation 2153 # No. 23 from 1992-01-08 [See 'europe' file for details]. 2154 # Kazakh 1992-01-13 act appears to provide the same rules and 1992-03-27 2155 # act was to be enacted on the last Sunday of March 1992. 2156 2157 # From Stepan Golosunov (2016-11-08): 2158 # Turgai reorganization should affect only southern part of Qostanay 2159 # oblast. Which should probably be separated into Asia/Arkalyk zone. 2160 # (There were also 1970, 1988 and 1990 Turgai oblast reorganizations 2161 # according to wikipedia.) 2162 # 2163 # [For Qostanay] http://www.ng.kz/gazeta/195/hranit/ 2164 # suggests that clocks were to be moved 40 minutes backwards on 2165 # 1920-01-01 to the fourth time belt. But I do not understand 2166 # how that could happen.... 2167 # 2168 # [For Atyrau and Oral] 1919 decree 2169 # (http://www.worldtimezone.com/dst_news/dst_news_russia-1919-02-08.html 2170 # and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in 2171 # the third time belt (before 1930 this means +03). 2172 2173 # From Alexander Konzurovski (2018-12-20): 2174 # Qyzyolrda Region (Asia/Qyzylorda) is changing its time zone from 2175 # UTC+6 to UTC+5 effective December 21st, 2018. The legal document is 2176 # located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language). 2177 2178 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2179 # 2180 # Almaty (formerly Alma-Ata), representing most locations in Kazakhstan 2181 # This includes KZ-AKM, KZ-ALA, KZ-ALM, KZ-AST, KZ-BAY, KZ-VOS, KZ-ZHA, 2182 # KZ-KAR, KZ-SEV, KZ-PAV, and KZ-YUZ. 2183 Zone Asia/Almaty 5:07:48 - LMT 1924 May 2 # or Alma-Ata 2184 5:00 - +05 1930 Jun 21 2185 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 2186 5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s 2187 6:00 RussiaAsia +06/+07 2004 Oct 31 2:00s 2188 6:00 - +06 2189 # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY) 2190 Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2 2191 4:00 - +04 1930 Jun 21 2192 5:00 - +05 1981 Apr 1 2193 5:00 1:00 +06 1981 Oct 1 2194 6:00 - +06 1982 Apr 1 2195 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2196 4:00 RussiaAsia +04/+05 1991 Sep 29 2:00s 2197 5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s 2198 6:00 RussiaAsia +06/+07 1992 Mar 29 2:00s 2199 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2200 6:00 - +06 2018 Dec 21 0:00 2201 5:00 - +05 2202 # 2203 # Qostanay (aka Kostanay, Kustanay) (KZ-KUS) 2204 # The 1991/2 rules are unclear partly because of the 1997 Turgai 2205 # reorganization. 2206 Zone Asia/Qostanay 4:14:28 - LMT 1924 May 2 2207 4:00 - +04 1930 Jun 21 2208 5:00 - +05 1981 Apr 1 2209 5:00 1:00 +06 1981 Oct 1 2210 6:00 - +06 1982 Apr 1 2211 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2212 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2213 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2214 6:00 - +06 2215 2216 # Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT) 2217 Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2 2218 4:00 - +04 1930 Jun 21 2219 5:00 - +05 1981 Apr 1 2220 5:00 1:00 +06 1981 Oct 1 2221 6:00 - +06 1982 Apr 1 2222 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2223 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2224 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s 2225 5:00 - +05 2226 # Mangghystaū (KZ-MAN) 2227 # Aqtau was not founded until 1963, but it represents an inhabited region, 2228 # so include timestamps before 1963. 2229 Zone Asia/Aqtau 3:21:04 - LMT 1924 May 2 2230 4:00 - +04 1930 Jun 21 2231 5:00 - +05 1981 Oct 1 2232 6:00 - +06 1982 Apr 1 2233 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2234 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2235 5:00 RussiaAsia +05/+06 1994 Sep 25 2:00s 2236 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2237 5:00 - +05 2238 # Atyraū (KZ-ATY) is like Mangghystaū except it switched from 2239 # +04/+05 to +05/+06 in spring 1999, not fall 1994. 2240 Zone Asia/Atyrau 3:27:44 - LMT 1924 May 2 2241 3:00 - +03 1930 Jun 21 2242 5:00 - +05 1981 Oct 1 2243 6:00 - +06 1982 Apr 1 2244 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s 2245 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2246 5:00 RussiaAsia +05/+06 1999 Mar 28 2:00s 2247 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2248 5:00 - +05 2249 # West Kazakhstan (KZ-ZAP) 2250 # From Paul Eggert (2016-03-18): 2251 # The 1989 transition is from USSR act No. 227 (1989-03-14). 2252 Zone Asia/Oral 3:25:24 - LMT 1924 May 2 # or Ural'sk 2253 3:00 - +03 1930 Jun 21 2254 5:00 - +05 1981 Apr 1 2255 5:00 1:00 +06 1981 Oct 1 2256 6:00 - +06 1982 Apr 1 2257 5:00 RussiaAsia +05/+06 1989 Mar 26 2:00s 2258 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s 2259 5:00 RussiaAsia +05/+06 1992 Mar 29 2:00s 2260 4:00 RussiaAsia +04/+05 2004 Oct 31 2:00s 2261 5:00 - +05 2262 2263 # Kyrgyzstan (Kirgizstan) 2264 # Transitions through 1991 are from Shanks & Pottenger. 2265 2266 # From Paul Eggert (2005-08-15): 2267 # According to an article dated today in the Kyrgyzstan Development Gateway 2268 # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml 2269 # Kyrgyzstan is canceling the daylight saving time system. I take the article 2270 # to mean that they will leave their clocks at 6 hours ahead of UTC. 2271 # From Malik Abdugaliev (2005-09-21): 2272 # Our government cancels daylight saving time 6th of August 2005. 2273 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving. 2274 2275 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2276 Rule Kyrgyz 1992 1996 - Apr Sun>=7 0:00s 1:00 - 2277 Rule Kyrgyz 1992 1996 - Sep lastSun 0:00 0 - 2278 Rule Kyrgyz 1997 2005 - Mar lastSun 2:30 1:00 - 2279 Rule Kyrgyz 1997 2004 - Oct lastSun 2:30 0 - 2280 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2281 Zone Asia/Bishkek 4:58:24 - LMT 1924 May 2 2282 5:00 - +05 1930 Jun 21 2283 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 2284 5:00 RussiaAsia +05/+06 1991 Aug 31 2:00 2285 5:00 Kyrgyz +05/+06 2005 Aug 12 2286 6:00 - +06 2287 2288 ############################################################################### 2289 2290 # Korea (North and South) 2291 2292 # From Annie I. Bang (2006-07-10): 2293 # http://www.koreaherald.com/view.php?ud=200607100012 2294 # Korea ran a daylight saving program from 1949-61 but stopped it 2295 # during the 1950-53 Korean War. The system was temporarily enforced 2296 # between 1987 and 1988 ... 2297 2298 # From Sanghyuk Jung (2014-10-29): 2299 # https://mm.icann.org/pipermail/tz/2014-October/021830.html 2300 # According to the Korean Wikipedia 2301 # https://ko.wikipedia.org/wiki/한국_표준시 2302 # [oldid=12896437 2014-09-04 08:03 UTC] 2303 # DST in Republic of Korea was as follows.... And I checked old 2304 # newspapers in Korean, all articles correspond with data in Wikipedia. 2305 # For example, the article in 1948 (Korean Language) proved that DST 2306 # started at June 1 in that year. For another example, the article in 2307 # 1988 said that DST started at 2:00 AM in that year. 2308 2309 # From Phake Nick (2018-10-27): 2310 # 1. According to official announcement from Korean government, the DST end 2311 # date in South Korea should be 2312 # 1955-09-08 without specifying time 2313 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027977557 2314 # 1956-09-29 without specifying time 2315 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027978341 2316 # 1957-09-21 24 o'clock 2317 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027979690#3 2318 # 1958-09-20 24 o'clock 2319 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027981189 2320 # 1959-09-19 24 o'clock 2321 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027982974#2 2322 # 1960-09-17 24 o'clock 2323 # http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0028044104 2324 # ... 2325 # 2.... https://namu.wiki/w/대한민국%20표준시 ... [says] 2326 # when Korea was using GMT+8:30 as standard time, the international 2327 # aviation/marine/meteorological industry in the country refused to 2328 # follow and continued to use GMT+9:00 for interoperability. 2329 2330 2331 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2332 Rule ROK 1948 only - Jun 1 0:00 1:00 D 2333 Rule ROK 1948 only - Sep 12 24:00 0 S 2334 Rule ROK 1949 only - Apr 3 0:00 1:00 D 2335 Rule ROK 1949 1951 - Sep Sat>=7 24:00 0 S 2336 Rule ROK 1950 only - Apr 1 0:00 1:00 D 2337 Rule ROK 1951 only - May 6 0:00 1:00 D 2338 Rule ROK 1955 only - May 5 0:00 1:00 D 2339 Rule ROK 1955 only - Sep 8 24:00 0 S 2340 Rule ROK 1956 only - May 20 0:00 1:00 D 2341 Rule ROK 1956 only - Sep 29 24:00 0 S 2342 Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D 2343 Rule ROK 1957 1960 - Sep Sat>=17 24:00 0 S 2344 Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D 2345 Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S 2346 2347 # From Paul Eggert (2016-08-23): 2348 # The Korean Wikipedia entry gives the following sources for UT offsets: 2349 # 2350 # 1908: Official Journal Article No. 3994 (decree No. 5) 2351 # 1912: Governor-General of Korea Official Gazette Issue No. 367 2352 # (Announcement No. 338) 2353 # 1954: Presidential Decree No. 876 (1954-03-17) 2354 # 1961: Law No. 676 (1961-08-07) 2355 # 2356 # (Another source "1987: Law No. 3919 (1986-12-31)" was in the 2014-10-30 2357 # edition of the Korean Wikipedia entry.) 2358 # 2359 # I guessed that time zone abbreviations through 1945 followed the same 2360 # rules as discussed under Taiwan, with nominal switches from JST to KST 2361 # when the respective cities were taken over by the Allies after WWII. 2362 # 2363 # For Pyongyang, guess no changes from World War II until 2015, as we 2364 # have no information otherwise. 2365 2366 # From Steffen Thorsen (2015-08-07): 2367 # According to many news sources, North Korea is going to change to 2368 # the 8:30 time zone on August 15, one example: 2369 # http://www.bbc.com/news/world-asia-33815049 2370 # 2371 # From Paul Eggert (2015-08-15): 2372 # Bells rang out midnight (00:00) Friday as part of the celebrations. See: 2373 # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time' 2374 # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html 2375 # There is no common English-language abbreviation for this time zone. 2376 # Use KST, as that's what we already use for 1954-1961 in ROK. 2377 2378 # From Kang Seonghoon (2018-04-29): 2379 # North Korea will revert its time zone from UTC+8:30 (PYT; Pyongyang 2380 # Time) back to UTC+9 (KST; Korea Standard Time). 2381 # 2382 # From Seo Sanghyeon (2018-04-30): 2383 # Rodong Sinmun 2018-04-30 announced Pyongyang Time transition plan. 2384 # https://www.nknews.org/kcna/wp-content/uploads/sites/5/2018/04/rodong-2018-04-30.pdf 2385 # ... the transition date is 2018-05-05 ... Citation should be Decree 2386 # No. 2232 of April 30, 2018, of the Presidium of the Supreme People's 2387 # Assembly, as published in Rodong Sinmun. 2388 # From Tim Parenti (2018-04-29): 2389 # It appears to be the front page story at the top in the right-most column. 2390 # 2391 # From Paul Eggert (2018-05-04): 2392 # The BBC reported that the transition was from 23:30 to 24:00 today. 2393 # https://www.bbc.com/news/world-asia-44010705 2394 2395 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2396 Zone Asia/Seoul 8:27:52 - LMT 1908 Apr 1 2397 8:30 - KST 1912 Jan 1 2398 9:00 - JST 1945 Sep 8 2399 9:00 - KST 1954 Mar 21 2400 8:30 ROK K%sT 1961 Aug 10 2401 9:00 ROK K%sT 2402 Zone Asia/Pyongyang 8:23:00 - LMT 1908 Apr 1 2403 8:30 - KST 1912 Jan 1 2404 9:00 - JST 1945 Aug 24 2405 9:00 - KST 2015 Aug 15 00:00 2406 8:30 - KST 2018 May 4 23:30 2407 9:00 - KST 2408 2409 ############################################################################### 2410 2411 # Kuwait 2412 # See Asia/Riyadh. 2413 2414 # Laos 2415 # See Asia/Bangkok. 2416 2417 2418 # Lebanon 2419 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2420 Rule Lebanon 1920 only - Mar 28 0:00 1:00 S 2421 Rule Lebanon 1920 only - Oct 25 0:00 0 - 2422 Rule Lebanon 1921 only - Apr 3 0:00 1:00 S 2423 Rule Lebanon 1921 only - Oct 3 0:00 0 - 2424 Rule Lebanon 1922 only - Mar 26 0:00 1:00 S 2425 Rule Lebanon 1922 only - Oct 8 0:00 0 - 2426 Rule Lebanon 1923 only - Apr 22 0:00 1:00 S 2427 Rule Lebanon 1923 only - Sep 16 0:00 0 - 2428 Rule Lebanon 1957 1961 - May 1 0:00 1:00 S 2429 Rule Lebanon 1957 1961 - Oct 1 0:00 0 - 2430 Rule Lebanon 1972 only - Jun 22 0:00 1:00 S 2431 Rule Lebanon 1972 1977 - Oct 1 0:00 0 - 2432 Rule Lebanon 1973 1977 - May 1 0:00 1:00 S 2433 Rule Lebanon 1978 only - Apr 30 0:00 1:00 S 2434 Rule Lebanon 1978 only - Sep 30 0:00 0 - 2435 Rule Lebanon 1984 1987 - May 1 0:00 1:00 S 2436 Rule Lebanon 1984 1991 - Oct 16 0:00 0 - 2437 Rule Lebanon 1988 only - Jun 1 0:00 1:00 S 2438 Rule Lebanon 1989 only - May 10 0:00 1:00 S 2439 Rule Lebanon 1990 1992 - May 1 0:00 1:00 S 2440 Rule Lebanon 1992 only - Oct 4 0:00 0 - 2441 Rule Lebanon 1993 max - Mar lastSun 0:00 1:00 S 2442 Rule Lebanon 1993 1998 - Sep lastSun 0:00 0 - 2443 Rule Lebanon 1999 max - Oct lastSun 0:00 0 - 2444 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2445 Zone Asia/Beirut 2:22:00 - LMT 1880 2446 2:00 Lebanon EE%sT 2447 2448 # Malaysia 2449 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2450 Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 - 2451 Rule NBorneo 1935 1941 - Dec 14 0:00 0 - 2452 # 2453 # peninsular Malaysia 2454 # taken from Mok Ly Yng (2003-10-30) 2455 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html 2456 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2457 Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 2458 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 2459 7:00 - +07 1933 Jan 1 2460 7:00 0:20 +0720 1936 Jan 1 2461 7:20 - +0720 1941 Sep 1 2462 7:30 - +0730 1942 Feb 16 2463 9:00 - +09 1945 Sep 12 2464 7:30 - +0730 1982 Jan 1 2465 8:00 - +08 2466 # Sabah & Sarawak 2467 # From Paul Eggert (2014-08-12): 2468 # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 2469 # and 1982 transition dates are from Mok Ly Yng. 2470 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2471 Zone Asia/Kuching 7:21:20 - LMT 1926 Mar 2472 7:30 - +0730 1933 2473 8:00 NBorneo +08/+0820 1942 Feb 16 2474 9:00 - +09 1945 Sep 12 2475 8:00 - +08 2476 2477 # Maldives 2478 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2479 Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé 2480 4:54:00 - MMT 1960 # Malé Mean Time 2481 5:00 - +05 2482 2483 # Mongolia 2484 2485 # Shanks & Pottenger say that Mongolia has three time zones, but 2486 # The USNO (1995-12-21) and the CIA map Standard Time Zones of the World 2487 # (2005-03) both say that it has just one. 2488 2489 # From Oscar van Vlijmen (1999-12-11): 2490 # General Information Mongolia 2491 # <http://www.mongoliatourism.gov.mn/general.htm> (1999-09) 2492 # "Time: Mongolia has two time zones. Three westernmost provinces of 2493 # Bayan-Ölgii, Uvs, and Hovd are one hour earlier than the capital city, and 2494 # the rest of the country follows the Ulaanbaatar time, which is UTC/GMT plus 2495 # eight hours." 2496 2497 # From Rives McDow (1999-12-13): 2498 # Mongolia discontinued the use of daylight savings time in 1999; 1998 2499 # being the last year it was implemented. The dates of implementation I am 2500 # unsure of, but most probably it was similar to Russia, except for the time 2501 # of implementation may have been different.... 2502 # Some maps in the past have indicated that there was an additional time 2503 # zone in the eastern part of Mongolia, including the provinces of Dornod, 2504 # Sükhbaatar, and possibly Khentii. 2505 2506 # From Paul Eggert (1999-12-15): 2507 # Naming and spelling is tricky in Mongolia. 2508 # We'll use Hovd (also spelled Chovd and Khovd) to represent the west zone; 2509 # the capital of the Hovd province is sometimes called Hovd, sometimes Dund-Us, 2510 # and sometimes Jirgalanta (with variant spellings), but the name Hovd 2511 # is good enough for our purposes. 2512 2513 # From Rives McDow (2001-05-13): 2514 # In addition to Mongolia starting daylight savings as reported earlier 2515 # (adopted DST on 2001-04-27 02:00 local time, ending 2001-09-28), 2516 # there are three time zones. 2517 # 2518 # Provinces [at 7:00]: Bayan-Ölgii, Uvs, Khovd, Zavkhan, Govi-Altai 2519 # Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv, 2520 # Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi 2521 # Provinces [at 9:00]: Dornod, Sükhbaatar 2522 # 2523 # [The province of Selenge is omitted from the above lists.] 2524 2525 # From Ganbold Ts., Ulaanbaatar (2004-04-17): 2526 # Daylight saving occurs at 02:00 local time last Saturday of March. 2527 # It will change back to normal at 02:00 local time last Saturday of 2528 # September.... As I remember this rule was changed in 2001. 2529 # 2530 # From Paul Eggert (2004-04-17): 2531 # For now, assume Rives McDow's informant got confused about Friday vs 2532 # Saturday, and that his 2001 dates should have 1 added to them. 2533 2534 # From Paul Eggert (2005-07-26): 2535 # We have wildly conflicting information about Mongolia's time zones. 2536 # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says 2537 # there is only one time zone and that DST is observed, citing Microsoft 2538 # Windows XP as the source. Risto Nykänen (2005-05-16) reports that 2539 # travelmongolia.org says there are two time zones (UT +07, +08) with no DST. 2540 # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in 2541 # Washington, DC says there are two time zones, with DST observed. 2542 # He also found 2543 # http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1& 2544 # which also says that there is DST, and which has a comment by "Toddius" 2545 # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones. 2546 # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT 2547 # and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT. 2548 # The SUKH timezone is new this year, it is one of the few things the 2549 # parliament passed during the tumultuous winter session." 2550 # For now, let's ignore this information, until we have more confirmation. 2551 2552 # From Ganbold Ts. (2007-02-26): 2553 # Parliament of Mongolia has just changed the daylight-saving rule in February. 2554 # They decided not to adopt daylight-saving time.... 2555 # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742 2556 2557 # From Deborah Goldsmith (2008-03-30): 2558 # We received a bug report claiming that the tz database UTC offset for 2559 # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT 2560 # +08:00 instead. Different sources appear to disagree with the tz 2561 # database on this, e.g.: 2562 # 2563 # https://www.timeanddate.com/worldclock/city.html?n=1026 2564 # http://www.worldtimeserver.com/current_time_in_MN.aspx 2565 # 2566 # both say GMT+08:00. 2567 2568 # From Steffen Thorsen (2008-03-31): 2569 # eznis airways, which operates several domestic flights, has a flight 2570 # schedule here: 2571 # http://www.eznis.com/Container.jsp?id=112 2572 # (click the English flag for English) 2573 # 2574 # There it appears that flights between Choibalsan and Ulaanbaatar arrive 2575 # about 1:35 - 1:50 hours later in local clock time, no matter the 2576 # direction, while Ulaanbaatar-Khovd takes 2 hours in the Eastern 2577 # direction and 3:35 back, which indicates that Ulaanbaatar and Khovd are 2578 # in different time zones (like we know about), while Choibalsan and 2579 # Ulaanbaatar are in the same time zone (correction needed). 2580 2581 # From Arthur David Olson (2008-05-19): 2582 # Assume that Choibalsan is indeed offset by 8:00. 2583 # XXX--in the absence of better information, assume that transition 2584 # was at the start of 2008-03-31 (the day of Steffen Thorsen's report); 2585 # this is almost surely wrong. 2586 2587 # From Ganbold Tsagaankhuu (2015-03-10): 2588 # It seems like yesterday Mongolian Government meeting has concluded to use 2589 # daylight saving time in Mongolia.... Starting at 2:00AM of last Saturday of 2590 # March 2015, daylight saving time starts. And 00:00AM of last Saturday of 2591 # September daylight saving time ends. Source: 2592 # http://zasag.mn/news/view/8969 2593 2594 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2595 Rule Mongol 1983 1984 - Apr 1 0:00 1:00 - 2596 Rule Mongol 1983 only - Oct 1 0:00 0 - 2597 # Shanks & Pottenger and IATA SSIM say 1990s switches occurred at 00:00, 2598 # but McDow says the 2001 switches occurred at 02:00. Also, IATA SSIM 2599 # (1996-09) says 1996-10-25. Go with Shanks & Pottenger through 1998. 2600 # 2601 # Shanks & Pottenger say that the Sept. 1984 through Sept. 1990 switches 2602 # in Choibalsan (more precisely, in Dornod and Sükhbaatar) took place 2603 # at 02:00 standard time, not at 00:00 local time as in the rest of 2604 # the country. That would be odd, and possibly is a result of their 2605 # correction of 02:00 (in the previous edition) not being done correctly 2606 # in the latest edition; so ignore it for now. 2607 2608 # From Ganbold Tsagaankhuu (2017-02-09): 2609 # Mongolian Government meeting has concluded today to cancel daylight 2610 # saving time adoption in Mongolia. Source: http://zasag.mn/news/view/16192 2611 2612 Rule Mongol 1985 1998 - Mar lastSun 0:00 1:00 - 2613 Rule Mongol 1984 1998 - Sep lastSun 0:00 0 - 2614 # IATA SSIM (1999-09) says Mongolia no longer observes DST. 2615 Rule Mongol 2001 only - Apr lastSat 2:00 1:00 - 2616 Rule Mongol 2001 2006 - Sep lastSat 2:00 0 - 2617 Rule Mongol 2002 2006 - Mar lastSat 2:00 1:00 - 2618 Rule Mongol 2015 2016 - Mar lastSat 2:00 1:00 - 2619 Rule Mongol 2015 2016 - Sep lastSat 0:00 0 - 2620 2621 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2622 # Hovd, a.k.a. Chovd, Dund-Us, Dzhargalant, Khovd, Jirgalanta 2623 Zone Asia/Hovd 6:06:36 - LMT 1905 Aug 2624 6:00 - +06 1978 2625 7:00 Mongol +07/+08 2626 # Ulaanbaatar, a.k.a. Ulan Bataar, Ulan Bator, Urga 2627 Zone Asia/Ulaanbaatar 7:07:32 - LMT 1905 Aug 2628 7:00 - +07 1978 2629 8:00 Mongol +08/+09 2630 # Choibalsan, a.k.a. Bajan Tümen, Bajan Tumen, Chojbalsan, 2631 # Choybalsan, Sanbejse, Tchoibalsan 2632 Zone Asia/Choibalsan 7:38:00 - LMT 1905 Aug 2633 7:00 - +07 1978 2634 8:00 - +08 1983 Apr 2635 9:00 Mongol +09/+10 2008 Mar 31 2636 8:00 Mongol +08/+09 2637 2638 # Nepal 2639 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2640 Zone Asia/Kathmandu 5:41:16 - LMT 1920 2641 5:30 - +0530 1986 2642 5:45 - +0545 2643 2644 # Oman 2645 # See Asia/Dubai. 2646 2647 # Pakistan 2648 2649 # From Rives McDow (2002-03-13): 2650 # I have been advised that Pakistan has decided to adopt dst on a 2651 # TRIAL basis for one year, starting 00:01 local time on April 7, 2002 2652 # and ending at 00:01 local time October 6, 2002. This is what I was 2653 # told, but I believe that the actual time of change may be 00:00; the 2654 # 00:01 was to make it clear which day it was on. 2655 2656 # From Paul Eggert (2002-03-15): 2657 # Jesper Nørgaard found this URL: 2658 # http://www.pak.gov.pk/public/news/app/app06_dec.htm 2659 # (dated 2001-12-06) which says that the Cabinet adopted a scheme "to 2660 # advance the clocks by one hour on the night between the first 2661 # Saturday and Sunday of April and revert to the original position on 2662 # 15th October each year". This agrees with McDow's 04-07 at 00:00, 2663 # but disagrees about the October transition, and makes it sound like 2664 # it's not on a trial basis. Also, the "between the first Saturday 2665 # and Sunday of April" phrase, if taken literally, means that the 2666 # transition takes place at 00:00 on the first Sunday on or after 04-02. 2667 2668 # From Paul Eggert (2003-02-09): 2669 # DAWN <http://www.dawn.com/2002/10/06/top13.htm> reported on 2002-10-05 2670 # that 2002 DST ended that day at midnight. Go with McDow for now. 2671 2672 # From Steffen Thorsen (2003-03-14): 2673 # According to http://www.dawn.com/2003/03/07/top15.htm 2674 # there will be no DST in Pakistan this year: 2675 # 2676 # ISLAMABAD, March 6: Information and Media Development Minister Sheikh 2677 # Rashid Ahmed on Thursday said the cabinet had reversed a previous 2678 # decision to advance clocks by one hour in summer and put them back by 2679 # one hour in winter with the aim of saving light hours and energy. 2680 # 2681 # The minister told a news conference that the experiment had rather 2682 # shown 8 per cent higher consumption of electricity. 2683 2684 # From Alex Krivenyshev (2008-05-15): 2685 # 2686 # Here is an article that Pakistan plan to introduce Daylight Saving Time 2687 # on June 1, 2008 for 3 months. 2688 # 2689 # "... The federal cabinet on Wednesday announced a new conservation plan to 2690 # help reduce load shedding by approving the closure of commercial centres at 2691 # 9pm and moving clocks forward by one hour for the next three months. ...." 2692 # 2693 # http://www.worldtimezone.com/dst_news/dst_news_pakistan01.html 2694 # http://www.dailytimes.com.pk/default.asp?page=2008%5C05%5C15%5Cstory_15-5-2008_pg1_4 2695 2696 # From Arthur David Olson (2008-05-19): 2697 # XXX--midnight transitions is a guess; 2008 only is a guess. 2698 2699 # From Alexander Krivenyshev (2008-08-28): 2700 # Pakistan government has decided to keep the watches one-hour advanced 2701 # for another 2 months - plan to return to Standard Time on October 31 2702 # instead of August 31. 2703 # 2704 # http://www.worldtimezone.com/dst_news/dst_news_pakistan02.html 2705 # http://dailymailnews.com/200808/28/news/dmbrn03.html 2706 2707 # From Alexander Krivenyshev (2009-04-08): 2708 # Based on previous media reports that "... proposed plan to 2709 # advance clocks by one hour from May 1 will cause disturbance 2710 # to the working schedules rather than bringing discipline in 2711 # official working." 2712 # http://www.thenews.com.pk/daily_detail.asp?id=171280 2713 # 2714 # recent news that instead of May 2009 - Pakistan plan to 2715 # introduce DST from April 15, 2009 2716 # 2717 # FYI: Associated Press Of Pakistan 2718 # April 08, 2009 2719 # Cabinet okays proposal to advance clocks by one hour from April 15 2720 # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=73043&Itemid=1 2721 # http://www.worldtimezone.com/dst_news/dst_news_pakistan05.html 2722 # 2723 # .... 2724 # The Federal Cabinet on Wednesday approved the proposal to 2725 # advance clocks in the country by one hour from April 15 to 2726 # conserve energy" 2727 2728 # From Steffen Thorsen (2009-09-17): 2729 # "The News International," Pakistan reports that: "The Federal 2730 # Government has decided to restore the previous time by moving the 2731 # clocks backward by one hour from October 1. A formal announcement to 2732 # this effect will be made after the Prime Minister grants approval in 2733 # this regard." 2734 # http://www.thenews.com.pk/updates.asp?id=87168 2735 2736 # From Alexander Krivenyshev (2009-09-28): 2737 # According to Associated Press Of Pakistan, it is confirmed that 2738 # Pakistan clocks across the country would be turned back by an hour from 2739 # October 1, 2009. 2740 # 2741 # "Clocks to go back one hour from 1 Oct" 2742 # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=86715&Itemid=2 2743 # http://www.worldtimezone.com/dst_news/dst_news_pakistan07.htm 2744 # 2745 # From Steffen Thorsen (2009-09-29): 2746 # Now they seem to have changed their mind, November 1 is the new date: 2747 # http://www.thenews.com.pk/top_story_detail.asp?Id=24742 2748 # "The country's clocks will be reversed by one hour on November 1. 2749 # Officials of Federal Ministry for Interior told this to Geo News on 2750 # Monday." 2751 # 2752 # And more importantly, it seems that these dates will be kept every year: 2753 # "It has now been decided that clocks will be wound forward by one hour 2754 # on April 15 and reversed by an hour on November 1 every year without 2755 # obtaining prior approval, the officials added." 2756 # 2757 # We have confirmed this year's end date with both with the Ministry of 2758 # Water and Power and the Pakistan Electric Power Company: 2759 # https://www.timeanddate.com/news/time/pakistan-ends-dst09.html 2760 2761 # From Christoph Göhre (2009-10-01): 2762 # [T]he German Consulate General in Karachi reported me today that Pakistan 2763 # will go back to standard time on 1st of November. 2764 2765 # From Steffen Thorsen (2010-03-26): 2766 # Steffen Thorsen wrote: 2767 # > On Thursday (2010-03-25) it was announced that DST would start in 2768 # > Pakistan on 2010-04-01. 2769 # > 2770 # > Then today, the president said that they might have to revert the 2771 # > decision if it is not supported by the parliament. So at the time 2772 # > being, it seems unclear if DST will be actually observed or not - but 2773 # > April 1 could be a more likely date than April 15. 2774 # Now, it seems that the decision to not observe DST in final: 2775 # 2776 # "Govt Withdraws Plan To Advance Clocks" 2777 # http://www.apakistannews.com/govt-withdraws-plan-to-advance-clocks-172041 2778 # 2779 # "People laud PM's announcement to end DST" 2780 # http://www.app.com.pk/en_/index.php?option=com_content&task=view&id=99374&Itemid=2 2781 2782 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 2783 Rule Pakistan 2002 only - Apr Sun>=2 0:00 1:00 S 2784 Rule Pakistan 2002 only - Oct Sun>=2 0:00 0 - 2785 Rule Pakistan 2008 only - Jun 1 0:00 1:00 S 2786 Rule Pakistan 2008 2009 - Nov 1 0:00 0 - 2787 Rule Pakistan 2009 only - Apr 15 0:00 1:00 S 2788 2789 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 2790 Zone Asia/Karachi 4:28:12 - LMT 1907 2791 5:30 - +0530 1942 Sep 2792 5:30 1:00 +0630 1945 Oct 15 2793 5:30 - +0530 1951 Sep 30 2794 5:00 - +05 1971 Mar 26 2795 5:00 Pakistan PK%sT # Pakistan Time 2796 2797 # Palestine 2798 2799 # From Amos Shapir (1998-02-15): 2800 # 2801 # From 1917 until 1948-05-15, all of Palestine, including the parts now 2802 # known as the Gaza Strip and the West Bank, was under British rule. 2803 # Therefore the rules given for Israel for that period, apply there too... 2804 # 2805 # The Gaza Strip was under Egyptian rule between 1948-05-15 until 1967-06-05 2806 # (except a short occupation by Israel from 1956-11 till 1957-03, but no 2807 # time zone was affected then). It was never formally annexed to Egypt, 2808 # though. 2809 # 2810 # The rest of Palestine was under Jordanian rule at that time, formally 2811 # annexed in 1950 as the West Bank (and the word "Trans" was dropped from 2812 # the country's previous name of "the Hashemite Kingdom of the 2813 # Trans-Jordan"). So the rules for Jordan for that time apply. Major 2814 # towns in that area are Nablus (Shchem), El-Halil (Hebron), Ramallah, and 2815 # East Jerusalem. 2816 # 2817 # Both areas were occupied by Israel in June 1967, but not annexed (except 2818 # for East Jerusalem). They were on Israel time since then; there might 2819 # have been a Military Governor's order about time zones, but I'm not aware 2820 # of any (such orders may have been issued semi-annually whenever summer 2821 # time was in effect, but maybe the legal aspect of time was just neglected). 2822 # 2823 # The Palestinian Authority was established in 1993, and got hold of most 2824 # towns in the West Bank and Gaza by 1995. I know that in order to 2825 # demonstrate...independence, they have been switching to 2826 # summer time and back on a different schedule than Israel's, but I don't 2827 # know when this was started, or what algorithm is used (most likely the 2828 # Jordanian one). 2829 # 2830 # To summarize, the table should probably look something like that: 2831 # 2832 # Area \ when | 1918-1947 | 1948-1967 | 1967-1995 | 1996- 2833 # ------------+-----------+-----------+-----------+----------- 2834 # Israel | Zion | Zion | Zion | Zion 2835 # West bank | Zion | Jordan | Zion | Jordan 2836 # Gaza | Zion | Egypt | Zion | Jordan 2837 # 2838 # I guess more info may be available from the PA's web page (if/when they 2839 # have one). 2840 2841 # From Paul Eggert (2006-03-22): 2842 # Shanks & Pottenger write that Gaza did not observe DST until 1957, but go 2843 # with Shapir and assume that it observed DST from 1940 through 1947, 2844 # and that it used Jordanian rules starting in 1996. 2845 # We don't yet need a separate entry for the West Bank, since 2846 # the only differences between it and Gaza that we know about 2847 # occurred before our cutoff date of 1970. 2848 # However, as we get more information, we may need to add entries 2849 # for parts of the West Bank as they transitioned from Israel's rules 2850 # to Palestine's rules. 2851 2852 # From IINS News Service - Israel - 1998-03-23 10:38:07 Israel time, 2853 # forwarded by Ephraim Silverberg: 2854 # 2855 # Despite the fact that Israel changed over to daylight savings time 2856 # last week, the PLO Authority (PA) has decided not to turn its clocks 2857 # one-hour forward at this time. As a sign of independence from Israeli rule, 2858 # the PA has decided to implement DST in April. 2859 2860 # From Paul Eggert (1999-09-20): 2861 # Daoud Kuttab writes in Holiday havoc 2862 # http://www.jpost.com/com/Archive/22.Apr.1999/Opinion/Article-2.html 2863 # (Jerusalem Post, 1999-04-22) that 2864 # the Palestinian National Authority changed to DST on 1999-04-15. 2865 # I vaguely recall that they switch back in October (sorry, forgot the source). 2866 # For now, let's assume that the spring switch was at 24:00, 2867 # and that they switch at 0:00 on the 3rd Fridays of April and October. 2868 2869 # From Paul Eggert (2005-11-22): 2870 # Starting 2004 transitions are from Steffen Thorsen's web site timeanddate.com. 2871 2872 # From Steffen Thorsen (2005-11-23): 2873 # A user from Gaza reported that Gaza made the change early because of 2874 # the Ramadan. Next year Ramadan will be even earlier, so I think 2875 # there is a good chance next year's end date will be around two weeks 2876 # earlier - the same goes for Jordan. 2877 2878 # From Steffen Thorsen (2006-08-17): 2879 # I was informed by a user in Bethlehem that in Bethlehem it started the 2880 # same day as Israel, and after checking with other users in the area, I 2881 # was informed that they started DST one day after Israel. I was not 2882 # able to find any authoritative sources at the time, nor details if 2883 # Gaza changed as well, but presumed Gaza to follow the same rules as 2884 # the West Bank. 2885 2886 # From Steffen Thorsen (2006-09-26): 2887 # according to the Palestine News Network (2006-09-19): 2888 # http://english.pnn.ps/index.php?option=com_content&task=view&id=596&Itemid=5 2889 # > The Council of Ministers announced that this year its winter schedule 2890 # > will begin early, as of midnight Thursday. It is also time to turn 2891 # > back the clocks for winter. Friday will begin an hour late this week. 2892 # I guess it is likely that next year's date will be moved as well, 2893 # because of the Ramadan. 2894 2895 # From Jesper Nørgaard Welen (2007-09-18): 2896 # According to Steffen Thorsen's web site the Gaza Strip and the rest of the 2897 # Palestinian territories left DST early on 13.th. of September at 2:00. 2898 2899 # From Paul Eggert (2007-09-20): 2900 # My understanding is that Gaza and the West Bank disagree even over when 2901 # the weekend is (Thursday+Friday versus Friday+Saturday), so I'd be a bit 2902 # surprised if they agreed about DST. But for now, assume they agree. 2903 # For lack of better information, predict that future changes will be 2904 # the 2nd Thursday of September at 02:00. 2905 2906 # From Alexander Krivenyshev (2008-08-28): 2907 # Here is an article, that Mideast running on different clocks at Ramadan. 2908 # 2909 # Gaza Strip (as Egypt) ended DST at midnight Thursday (Aug 28, 2008), while 2910 # the West Bank will end Daylight Saving Time at midnight Sunday (Aug 31, 2008). 2911 # 2912 # http://www.guardian.co.uk/world/feedarticle/7759001 2913 # http://www.abcnews.go.com/International/wireStory?id=5676087 2914 # http://www.worldtimezone.com/dst_news/dst_news_gazastrip01.html 2915 2916 # From Alexander Krivenyshev (2009-03-26): 2917 # According to the Palestine News Network (arabic.pnn.ps), Palestinian 2918 # government decided to start Daylight Time on Thursday night March 2919 # 26 and continue until the night of 27 September 2009. 2920 # 2921 # (in Arabic) 2922 # http://arabic.pnn.ps/index.php?option=com_content&task=view&id=50850 2923 # 2924 # (English translation) 2925 # http://www.worldtimezone.com/dst_news/dst_news_westbank01.html 2926 2927 # From Steffen Thorsen (2009-08-31): 2928 # Palestine's Council of Ministers announced that they will revert back to 2929 # winter time on Friday, 2009-09-04. 2930 # 2931 # One news source: 2932 # http://www.safa.ps/ara/?action=showdetail&seid=4158 2933 # (Palestinian press agency, Arabic), 2934 # Google translate: "Decided that the Palestinian government in Ramallah 2935 # headed by Salam Fayyad, the start of work in time for the winter of 2936 # 2009, starting on Friday approved the fourth delay Sept. clock sixty 2937 # minutes per hour as of Friday morning." 2938 # 2939 # We are not sure if Gaza will do the same, last year they had a different 2940 # end date, we will keep this page updated: 2941 # https://www.timeanddate.com/news/time/westbank-gaza-dst-2009.html 2942 2943 # From Alexander Krivenyshev (2009-09-02): 2944 # Seems that Gaza Strip will go back to Winter Time same date as West Bank. 2945 # 2946 # According to Palestinian Ministry Of Interior, West Bank and Gaza Strip plan 2947 # to change time back to Standard time on September 4, 2009. 2948 # 2949 # "Winter time unite the West Bank and Gaza" 2950 # (from Palestinian National Authority): 2951 # http://www.moi.gov.ps/en/?page=633167343250594025&nid=11505 2952 # http://www.worldtimezone.com/dst_news/dst_news_gazastrip02.html 2953 2954 # From Alexander Krivenyshev (2010-03-19): 2955 # According to Voice of Palestine DST will last for 191 days, from March 2956 # 26, 2010 till "the last Sunday before the tenth day of Tishri 2957 # (October), each year" (October 03, 2010?) 2958 # 2959 # http://palvoice.org/forums/showthread.php?t=245697 2960 # (in Arabic) 2961 # http://www.worldtimezone.com/dst_news/dst_news_westbank03.html 2962 2963 # From Steffen Thorsen (2010-03-24): 2964 # ...Ma'an News Agency reports that Hamas cabinet has decided it will 2965 # start one day later, at 12:01am. Not sure if they really mean 12:01am or 2966 # noon though: 2967 # 2968 # http://www.maannews.net/eng/ViewDetails.aspx?ID=271178 2969 # (Ma'an News Agency) 2970 # "At 12:01am Friday, clocks in Israel and the West Bank will change to 2971 # 1:01am, while Gaza clocks will change at 12:01am Saturday morning." 2972 2973 # From Steffen Thorsen (2010-08-11): 2974 # According to several sources, including 2975 # http://www.maannews.net/eng/ViewDetails.aspx?ID=306795 2976 # the clocks were set back one hour at 2010-08-11 00:00:00 local time in 2977 # Gaza and the West Bank. 2978 # Some more background info: 2979 # https://www.timeanddate.com/news/time/westbank-gaza-end-dst-2010.html 2980 2981 # From Steffen Thorsen (2011-08-26): 2982 # Gaza and the West Bank did go back to standard time in the beginning of 2983 # August, and will now enter daylight saving time again on 2011-08-30 2984 # 00:00 (so two periods of DST in 2011). The pause was because of 2985 # Ramadan. 2986 # 2987 # http://www.maannews.net/eng/ViewDetails.aspx?ID=416217 2988 # Additional info: 2989 # https://www.timeanddate.com/news/time/palestine-dst-2011.html 2990 2991 # From Alexander Krivenyshev (2011-08-27): 2992 # According to the article in The Jerusalem Post: 2993 # "...Earlier this month, the Palestinian government in the West Bank decided to 2994 # move to standard time for 30 days, during Ramadan. The Palestinians in the 2995 # Gaza Strip accepted the change and also moved their clocks one hour back. 2996 # The Hamas government said on Saturday that it won't observe summertime after 2997 # the Muslim feast of Id al-Fitr, which begins on Tuesday..." 2998 # ... 2999 # https://www.jpost.com/MiddleEast/Article.aspx?id=235650 3000 # http://www.worldtimezone.com/dst_news/dst_news_gazastrip05.html 3001 # The rules for Egypt are stolen from the 'africa' file. 3002 3003 # From Steffen Thorsen (2011-09-30): 3004 # West Bank did end Daylight Saving Time this morning/midnight (2011-09-30 3005 # 00:00). 3006 # So West Bank and Gaza now have the same time again. 3007 # 3008 # Many sources, including: 3009 # http://www.maannews.net/eng/ViewDetails.aspx?ID=424808 3010 3011 # From Steffen Thorsen (2012-03-26): 3012 # Palestinian news sources tell that both Gaza and West Bank will start DST 3013 # on Friday (Thursday midnight, 2012-03-29 24:00). 3014 # Some of many sources in Arabic: 3015 # http://www.samanews.com/index.php?act=Show&id=122638 3016 # 3017 # http://safa.ps/details/news/74352/%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-%D8%A8%D8%A7%D9%84%D8%B6%D9%81%D8%A9-%D9%88%D8%BA%D8%B2%D8%A9-%D9%84%D9%8A%D9%84%D8%A9-%D8%A7%D9%84%D8%AC%D9%85%D8%B9%D8%A9.html 3018 # 3019 # Our brief summary: 3020 # https://www.timeanddate.com/news/time/gaza-west-bank-dst-2012.html 3021 3022 # From Steffen Thorsen (2013-03-26): 3023 # The following news sources tells that Palestine will "start daylight saving 3024 # time from midnight on Friday, March 29, 2013" (translated). 3025 # [These are in Arabic and are for Gaza and for Ramallah, respectively.] 3026 # http://www.samanews.com/index.php?act=Show&id=154120 3027 # http://safa.ps/details/news/99844/%D8%B1%D8%A7%D9%85-%D8%A7%D9%84%D9%84%D9%87-%D8%A8%D8%AF%D8%A1-%D8%A7%D9%84%D8%AA%D9%88%D9%82%D9%8A%D8%AA-%D8%A7%D9%84%D8%B5%D9%8A%D9%81%D9%8A-29-%D8%A7%D9%84%D8%AC%D8%A7%D8%B1%D9%8A.html 3028 3029 # From Steffen Thorsen (2013-09-24): 3030 # The Gaza and West Bank are ending DST Thursday at midnight 3031 # (2013-09-27 00:00:00) (one hour earlier than last year...). 3032 # This source in English, says "that winter time will go into effect 3033 # at midnight on Thursday in the West Bank and Gaza Strip": 3034 # http://english.wafa.ps/index.php?action=detail&id=23246 3035 # official source...: 3036 # http://www.palestinecabinet.gov.ps/ar/Views/ViewDetails.aspx?pid=1252 3037 3038 # From Steffen Thorsen (2015-03-03): 3039 # Sources such as http://www.alquds.com/news/article/view/id/548257 3040 # and https://www.raya.ps/ar/news/890705.html say Palestine areas will 3041 # start DST on 2015-03-28 00:00 which is one day later than expected. 3042 # 3043 # From Paul Eggert (2015-03-03): 3044 # https://www.timeanddate.com/time/change/west-bank/ramallah?year=2014 3045 # says that the fall 2014 transition was Oct 23 at 24:00. 3046 3047 # From Hannah Kreitem (2016-03-09): 3048 # http://www.palestinecabinet.gov.ps/WebSite/ar/ViewDetails?ID=31728 3049 # [Google translation]: "The Council also decided to start daylight 3050 # saving in Palestine as of one o'clock on Saturday morning, 3051 # 2016-03-26, to provide the clock 60 minutes ahead." 3052 3053 # From Sharef Mustafa (2016-10-19): 3054 # [T]he Palestinian cabinet decision (Mar 8th 2016) published on 3055 # http://www.palestinecabinet.gov.ps/WebSite/Upload/Decree/GOV_17/16032016134830.pdf 3056 # states that summer time will end on Oct 29th at 01:00. 3057 # 3058 # From Tim Parenti (2016-10-19): 3059 # Predict fall transitions on October's last Saturday at 01:00 from now on. 3060 # This is consistent with the 2016 transition as well as our spring 3061 # predictions. 3062 # 3063 # From Paul Eggert (2016-10-19): 3064 # It's also consistent with predictions in the following URLs today: 3065 # https://www.timeanddate.com/time/change/gaza-strip/gaza 3066 # https://www.timeanddate.com/time/change/west-bank/hebron 3067 3068 # From Sharef Mustafa (2018-03-16): 3069 # Palestine summer time will start on Mar 24th 2018 by advancing the 3070 # clock by 60 minutes as per Palestinian cabinet decision published on 3071 # the official website, though the decree did not specify the exact 3072 # time of the time shift. 3073 # http://www.palestinecabinet.gov.ps/Website/AR/NDecrees/ViewFile.ashx?ID=e7a42ab7-ee23-435a-b9c8-a4f7e81f3817 3074 # 3075 # From Paul Eggert (2018-03-16): 3076 # For 2016 on, predict spring transitions on March's fourth Saturday at 01:00. 3077 3078 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 3079 Rule EgyptAsia 1957 only - May 10 0:00 1:00 S 3080 Rule EgyptAsia 1957 1958 - Oct 1 0:00 0 - 3081 Rule EgyptAsia 1958 only - May 1 0:00 1:00 S 3082 Rule EgyptAsia 1959 1967 - May 1 1:00 1:00 S 3083 Rule EgyptAsia 1959 1965 - Sep 30 3:00 0 - 3084 Rule EgyptAsia 1966 only - Oct 1 3:00 0 - 3085 3086 Rule Palestine 1999 2005 - Apr Fri>=15 0:00 1:00 S 3087 Rule Palestine 1999 2003 - Oct Fri>=15 0:00 0 - 3088 Rule Palestine 2004 only - Oct 1 1:00 0 - 3089 Rule Palestine 2005 only - Oct 4 2:00 0 - 3090 Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S 3091 Rule Palestine 2006 only - Sep 22 0:00 0 - 3092 Rule Palestine 2007 only - Sep Thu>=8 2:00 0 - 3093 Rule Palestine 2008 2009 - Mar lastFri 0:00 1:00 S 3094 Rule Palestine 2008 only - Sep 1 0:00 0 - 3095 Rule Palestine 2009 only - Sep Fri>=1 1:00 0 - 3096 Rule Palestine 2010 only - Mar 26 0:00 1:00 S 3097 Rule Palestine 2010 only - Aug 11 0:00 0 - 3098 Rule Palestine 2011 only - Apr 1 0:01 1:00 S 3099 Rule Palestine 2011 only - Aug 1 0:00 0 - 3100 Rule Palestine 2011 only - Aug 30 0:00 1:00 S 3101 Rule Palestine 2011 only - Sep 30 0:00 0 - 3102 Rule Palestine 2012 2014 - Mar lastThu 24:00 1:00 S 3103 Rule Palestine 2012 only - Sep 21 1:00 0 - 3104 Rule Palestine 2013 only - Sep Fri>=21 0:00 0 - 3105 Rule Palestine 2014 2015 - Oct Fri>=21 0:00 0 - 3106 Rule Palestine 2015 only - Mar lastFri 24:00 1:00 S 3107 Rule Palestine 2016 max - Mar Sat>=22 1:00 1:00 S 3108 Rule Palestine 2016 max - Oct lastSat 1:00 0 - 3109 3110 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3111 Zone Asia/Gaza 2:17:52 - LMT 1900 Oct 3112 2:00 Zion EET/EEST 1948 May 15 3113 2:00 EgyptAsia EE%sT 1967 Jun 5 3114 2:00 Zion I%sT 1996 3115 2:00 Jordan EE%sT 1999 3116 2:00 Palestine EE%sT 2008 Aug 29 0:00 3117 2:00 - EET 2008 Sep 3118 2:00 Palestine EE%sT 2010 3119 2:00 - EET 2010 Mar 27 0:01 3120 2:00 Palestine EE%sT 2011 Aug 1 3121 2:00 - EET 2012 3122 2:00 Palestine EE%sT 3123 3124 Zone Asia/Hebron 2:20:23 - LMT 1900 Oct 3125 2:00 Zion EET/EEST 1948 May 15 3126 2:00 EgyptAsia EE%sT 1967 Jun 5 3127 2:00 Zion I%sT 1996 3128 2:00 Jordan EE%sT 1999 3129 2:00 Palestine EE%sT 3130 3131 # Paracel Is 3132 # no information 3133 3134 # Philippines 3135 3136 # From Paul Eggert (2018-11-18): 3137 # The Spanish initially used American (west-of-Greenwich) time. 3138 # It is unknown what time Manila kept when the British occupied it from 3139 # 1762-10-06 through 1764-04; for now assume it kept American time. 3140 # On 1844-08-16, Narciso Clavería, governor-general of the 3141 # Philippines, issued a proclamation announcing that 1844-12-30 was to 3142 # be immediately followed by 1845-01-01; see R.H. van Gent's 3143 # History of the International Date Line 3144 # https://www.staff.science.uu.nl/~gent0113/idl/idl_philippines.htm 3145 # The rest of the data entries are from Shanks & Pottenger. 3146 3147 # From Jesper Nørgaard Welen (2006-04-26): 3148 # ... claims that Philippines had DST last time in 1990: 3149 # http://story.philippinetimes.com/p.x/ct/9/id/145be20cc6b121c0/cid/3e5bbccc730d258c/ 3150 # [a story dated 2006-04-25 by Cris Larano of Dow Jones Newswires, 3151 # but no details] 3152 3153 # From Paul Eggert (2014-08-14): 3154 # The following source says DST may be instituted November-January and again 3155 # March-June, but this is not definite. It also says DST was last proclaimed 3156 # during the Ramos administration (1992-1998); but again, no details. 3157 # Carcamo D. PNoy urged to declare use of daylight saving time. 3158 # Philippine Star 2014-08-05 3159 # http://www.philstar.com/headlines/2014/08/05/1354152/pnoy-urged-declare-use-daylight-saving-time 3160 3161 # From Paul Goyette (2018-06-15): 3162 # In the Philippines, there is a national law, Republic Act No. 10535 3163 # which declares the official time here as "Philippine Standard Time". 3164 # The act [1] even specifies use of PST as the abbreviation, although 3165 # the FAQ provided by PAGASA [2] uses the "acronym PhST to distinguish 3166 # it from the Pacific Standard Time (PST)." 3167 # [1] http://www.officialgazette.gov.ph/2013/05/15/republic-act-no-10535/ 3168 # [2] https://www1.pagasa.dost.gov.ph/index.php/astronomy/philippine-standard-time#republic-act-10535 3169 # 3170 # From Paul Eggert (2018-06-19): 3171 # I surveyed recent news reports, and my impression is that "PST" is 3172 # more popular among reliable English-language news sources. This is 3173 # not just a measure of Google hit counts: it's also the sizes and 3174 # influence of the sources. There is no current abbreviation for DST, 3175 # so use "PDT", the usual American style. 3176 3177 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 3178 Rule Phil 1936 only - Nov 1 0:00 1:00 D 3179 Rule Phil 1937 only - Feb 1 0:00 0 S 3180 Rule Phil 1954 only - Apr 12 0:00 1:00 D 3181 Rule Phil 1954 only - Jul 1 0:00 0 S 3182 Rule Phil 1978 only - Mar 22 0:00 1:00 D 3183 Rule Phil 1978 only - Sep 21 0:00 0 S 3184 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3185 Zone Asia/Manila -15:56:00 - LMT 1844 Dec 31 3186 8:04:00 - LMT 1899 May 11 3187 8:00 Phil P%sT 1942 May 3188 9:00 - JST 1944 Nov 3189 8:00 Phil P%sT 3190 3191 # Qatar 3192 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3193 Zone Asia/Qatar 3:26:08 - LMT 1920 # Al Dawhah / Doha 3194 4:00 - +04 1972 Jun 3195 3:00 - +03 3196 Link Asia/Qatar Asia/Bahrain 3197 3198 # Saudi Arabia 3199 # 3200 # From Paul Eggert (2018-08-29): 3201 # Time in Saudi Arabia and other countries in the Arabian peninsula was not 3202 # standardized until 1968 or so; we don't know exactly when, and possibly it 3203 # has never been made official. Richard P Hunt, in "Islam city yielding to 3204 # modern times", New York Times (1961-04-09), p 20, wrote that only airlines 3205 # observed standard time, and that people in Jeddah mostly observed quasi-solar 3206 # time, doing so by setting their watches at sunrise to 6 o'clock (or to 12 3207 # o'clock for "Arab" time). 3208 # 3209 # Timekeeping differed depending on who you were and which part of Saudi 3210 # Arabia you were in. In 1969, Elias Antar wrote that although a common 3211 # practice had been to set one's watch to 12:00 (i.e., midnight) at sunset - 3212 # which meant that the time on one side of a mountain could differ greatly from 3213 # the time on the other side - many foreigners set their watches to 6pm 3214 # instead, while airlines instead used UTC +03 (except in Dhahran, where they 3215 # used UTC +04), Aramco used UTC +03 with DST, and the Trans-Arabian Pipe Line 3216 # Company used Aramco time in eastern Saudi Arabia and airline time in western. 3217 # (The American Military Aid Advisory Group used plain UTC.) Antar writes, 3218 # "A man named Higgins, so the story goes, used to run a local power 3219 # station. One day, the whole thing became too much for Higgins and he 3220 # assembled his staff and laid down the law. 'I've had enough of this,' he 3221 # shrieked. 'It is now 12 o'clock Higgins Time, and from now on this station is 3222 # going to run on Higgins Time.' And so, until last year, it did." See: 3223 # Antar E. Dinner at When? Saudi Aramco World, 1969 March/April. 2-3. 3224 # http://archive.aramcoworld.com/issue/196902/dinner.at.when.htm 3225 # Also see: Antar EN. Arabian flying is confusing. 3226 # Port Angeles (WA) Evening News. 1965-03-10. page 3. 3227 # 3228 # The TZ database cannot represent quasi-solar time; airline time is the best 3229 # we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics 3230 # Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated 3231 # a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and 3232 # Jidda, on March 14, 1947". Shanks & Pottenger guessed 1950; go with the 3233 # earlier date. 3234 # 3235 # Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two 3236 # time zones; the other zone, at UT +04, was in the far eastern part of 3237 # the country. Presumably this is documenting airline time. Ignore this, 3238 # as it's before our 1970 cutoff. 3239 # 3240 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3241 Zone Asia/Riyadh 3:06:52 - LMT 1947 Mar 14 3242 3:00 - +03 3243 Link Asia/Riyadh Asia/Aden # Yemen 3244 Link Asia/Riyadh Asia/Kuwait 3245 3246 # Singapore 3247 # taken from Mok Ly Yng (2003-10-30) 3248 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html 3249 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3250 Zone Asia/Singapore 6:55:25 - LMT 1901 Jan 1 3251 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. 3252 7:00 - +07 1933 Jan 1 3253 7:00 0:20 +0720 1936 Jan 1 3254 7:20 - +0720 1941 Sep 1 3255 7:30 - +0730 1942 Feb 16 3256 9:00 - +09 1945 Sep 12 3257 7:30 - +0730 1982 Jan 1 3258 8:00 - +08 3259 3260 # Spratly Is 3261 # no information 3262 3263 # Sri Lanka 3264 3265 # From Paul Eggert (2013-02-21): 3266 # Milne says "Madras mean time use from May 1, 1898. Prior to this Colombo 3267 # mean time, 5h. 4m. 21.9s. F., was used." But 5:04:21.9 differs considerably 3268 # from Colombo's meridian 5:19:24, so for now ignore Milne and stick with 3269 # Shanks and Pottenger. 3270 3271 # From Paul Eggert (1996-09-03): 3272 # "Sri Lanka advances clock by an hour to avoid blackout" 3273 # (<http://www.virtual-pc.com/lankaweb/news/items/240596-2.html>, 1996-05-24, 3274 # no longer available as of 1999-08-17) 3275 # reported "the country's standard time will be put forward by one hour at 3276 # midnight Friday (1830 GMT) 'in the light of the present power crisis'." 3277 # 3278 # From Dharmasiri Senanayake, Sri Lanka Media Minister (1996-10-24), as quoted 3279 # by Shamindra in Daily News - Hot News Section 3280 # <news:54rka5$m5h@mtinsc01-mgt.ops.worldnet.att.net> (1996-10-26): 3281 # With effect from 12.30 a.m. on 26th October 1996 3282 # Sri Lanka will be six (06) hours ahead of GMT. 3283 3284 # From Jesper Nørgaard Welen (2006-04-14), quoting Sri Lanka News Online 3285 # <http://news.sinhalaya.com/wmview.php?ArtID=11002> (2006-04-13): 3286 # 0030 hrs on April 15, 2006 (midnight of April 14, 2006 +30 minutes) 3287 # at present, become 2400 hours of April 14, 2006 (midnight of April 14, 2006). 3288 3289 # From Peter Apps and Ranga Sirila of Reuters (2006-04-12) in: 3290 # http://today.reuters.co.uk/news/newsArticle.aspx?type=scienceNews&storyID=2006-04-12T172228Z_01_COL295762_RTRIDST_0_SCIENCE-SRILANKA-TIME-DC.XML 3291 # [The Tamil Tigers] never accepted the original 1996 time change and simply 3292 # kept their clocks set five and a half hours ahead of Greenwich Mean 3293 # Time (GMT), in line with neighbor India. 3294 # From Paul Eggert (2006-04-18): 3295 # People who live in regions under Tamil control can use [TZ='Asia/Kolkata'], 3296 # as that zone has agreed with the Tamil areas since our cutoff date of 1970. 3297 3298 # From Sadika Sumanapala (2016-10-19): 3299 # According to http://www.sltime.org (maintained by Measurement Units, 3300 # Standards & Services Department, Sri Lanka) abbreviation for Sri Lanka 3301 # standard time is SLST. 3302 # 3303 # From Paul Eggert (2016-10-18): 3304 # "SLST" seems to be reasonably recent and rarely-used outside time 3305 # zone nerd sources. I searched Google News and found three uses of 3306 # it in the International Business Times of India in February and 3307 # March of this year when discussing cricket match times, but nothing 3308 # since then (though there has been a lot of cricket) and nothing in 3309 # other English-language news sources. Our old abbreviation "LKT" is 3310 # even worse. For now, let's use a numeric abbreviation; we can 3311 # switch to "SLST" if it catches on. 3312 3313 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3314 Zone Asia/Colombo 5:19:24 - LMT 1880 3315 5:19:32 - MMT 1906 # Moratuwa Mean Time 3316 5:30 - +0530 1942 Jan 5 3317 5:30 0:30 +06 1942 Sep 3318 5:30 1:00 +0630 1945 Oct 16 2:00 3319 5:30 - +0530 1996 May 25 0:00 3320 6:30 - +0630 1996 Oct 26 0:30 3321 6:00 - +06 2006 Apr 15 0:30 3322 5:30 - +0530 3323 3324 # Syria 3325 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 3326 Rule Syria 1920 1923 - Apr Sun>=15 2:00 1:00 S 3327 Rule Syria 1920 1923 - Oct Sun>=1 2:00 0 - 3328 Rule Syria 1962 only - Apr 29 2:00 1:00 S 3329 Rule Syria 1962 only - Oct 1 2:00 0 - 3330 Rule Syria 1963 1965 - May 1 2:00 1:00 S 3331 Rule Syria 1963 only - Sep 30 2:00 0 - 3332 Rule Syria 1964 only - Oct 1 2:00 0 - 3333 Rule Syria 1965 only - Sep 30 2:00 0 - 3334 Rule Syria 1966 only - Apr 24 2:00 1:00 S 3335 Rule Syria 1966 1976 - Oct 1 2:00 0 - 3336 Rule Syria 1967 1978 - May 1 2:00 1:00 S 3337 Rule Syria 1977 1978 - Sep 1 2:00 0 - 3338 Rule Syria 1983 1984 - Apr 9 2:00 1:00 S 3339 Rule Syria 1983 1984 - Oct 1 2:00 0 - 3340 Rule Syria 1986 only - Feb 16 2:00 1:00 S 3341 Rule Syria 1986 only - Oct 9 2:00 0 - 3342 Rule Syria 1987 only - Mar 1 2:00 1:00 S 3343 Rule Syria 1987 1988 - Oct 31 2:00 0 - 3344 Rule Syria 1988 only - Mar 15 2:00 1:00 S 3345 Rule Syria 1989 only - Mar 31 2:00 1:00 S 3346 Rule Syria 1989 only - Oct 1 2:00 0 - 3347 Rule Syria 1990 only - Apr 1 2:00 1:00 S 3348 Rule Syria 1990 only - Sep 30 2:00 0 - 3349 Rule Syria 1991 only - Apr 1 0:00 1:00 S 3350 Rule Syria 1991 1992 - Oct 1 0:00 0 - 3351 Rule Syria 1992 only - Apr 8 0:00 1:00 S 3352 Rule Syria 1993 only - Mar 26 0:00 1:00 S 3353 Rule Syria 1993 only - Sep 25 0:00 0 - 3354 # IATA SSIM (1998-02) says 1998-04-02; 3355 # (1998-09) says 1999-03-29 and 1999-09-29; (1999-02) says 1999-04-02, 3356 # 2000-04-02, and 2001-04-02; (1999-09) says 2000-03-31 and 2001-03-31; 3357 # (2006) says 2006-03-31 and 2006-09-22; 3358 # for now ignore all these claims and go with Shanks & Pottenger, 3359 # except for the 2006-09-22 claim (which seems right for Ramadan). 3360 Rule Syria 1994 1996 - Apr 1 0:00 1:00 S 3361 Rule Syria 1994 2005 - Oct 1 0:00 0 - 3362 Rule Syria 1997 1998 - Mar lastMon 0:00 1:00 S 3363 Rule Syria 1999 2006 - Apr 1 0:00 1:00 S 3364 # From Stephen Colebourne (2006-09-18): 3365 # According to IATA data, Syria will change DST on 21st September [21:00 UTC] 3366 # this year [only].... This is probably related to Ramadan, like Egypt. 3367 Rule Syria 2006 only - Sep 22 0:00 0 - 3368 # From Paul Eggert (2007-03-29): 3369 # Today the AP reported "Syria will switch to summertime at midnight Thursday." 3370 # http://www.iht.com/articles/ap/2007/03/29/africa/ME-GEN-Syria-Time-Change.php 3371 Rule Syria 2007 only - Mar lastFri 0:00 1:00 S 3372 # From Jesper Nørgaard (2007-10-27): 3373 # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will 3374 # not take place 1st November at 0:00 o'clock but 1st November at 24:00 or 3375 # rather Midnight between Thursday and Friday. This does make more sense than 3376 # having it between Wednesday and Thursday (two workdays in Syria) since the 3377 # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now 3378 # it is implemented at midnight of the last workday before weekend... 3379 # 3380 # From Steffen Thorsen (2007-10-27): 3381 # Jesper Nørgaard Welen wrote: 3382 # 3383 # > "Winter local time in Syria will be observed at midnight of Thursday 1 3384 # > November 2007, and the clock will be put back 1 hour." 3385 # 3386 # I found confirmation on this in this gov.sy-article (Arabic): 3387 # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247 3388 # 3389 # which using Google's translate tools says: 3390 # Council of Ministers also approved the commencement of work on 3391 # identifying the winter time as of Friday, 2/11/2007 where the 60th 3392 # minute delay at midnight Thursday 1/11/2007. 3393 Rule Syria 2007 only - Nov Fri>=1 0:00 0 - 3394 3395 # From Stephen Colebourne (2008-03-17): 3396 # For everyone's info, I saw an IATA time zone change for [Syria] for 3397 # this month (March 2008) in the last day or so.... 3398 # Country Time Standard --- DST Start --- --- DST End --- DST 3399 # Name Zone Variation Time Date Time Date 3400 # Variation 3401 # Syrian Arab 3402 # Republic SY +0200 2200 03APR08 2100 30SEP08 +0300 3403 # 2200 02APR09 2100 30SEP09 +0300 3404 # 2200 01APR10 2100 30SEP10 +0300 3405 3406 # From Arthur David Olson (2008-03-17): 3407 # Here's a link to English-language coverage by the Syrian Arab News 3408 # Agency (SANA)... 3409 # http://www.sana.sy/eng/21/2008/03/11/165173.htm 3410 # ...which reads (in part) "The Cabinet approved the suggestion of the 3411 # Ministry of Electricity to begin daylight savings time on Friday April 3412 # 4th, advancing clocks one hour ahead on midnight of Thursday April 3rd." 3413 # Since Syria is two hours east of UTC, the 2200 and 2100 transition times 3414 # shown above match up with midnight in Syria. 3415 3416 # From Arthur David Olson (2008-03-18): 3417 # My best guess at a Syrian rule is "the Friday nearest April 1"; 3418 # coding that involves either using a "Mar Fri>=29" construct that old time zone 3419 # compilers can't handle or having multiple Rules (a la Israel). 3420 # For now, use "Apr Fri>=1", and go with IATA on a uniform Sep 30 end. 3421 3422 # From Steffen Thorsen (2008-10-07): 3423 # Syria has now officially decided to end DST on 2008-11-01 this year, 3424 # according to the following article in the Syrian Arab News Agency (SANA). 3425 # 3426 # The article is in Arabic, and seems to tell that they will go back to 3427 # winter time on 2008-11-01 at 00:00 local daylight time (delaying/setting 3428 # clocks back 60 minutes). 3429 # 3430 # http://sana.sy/ara/2/2008/10/07/195459.htm 3431 3432 # From Steffen Thorsen (2009-03-19): 3433 # Syria will start DST on 2009-03-27 00:00 this year according to many sources, 3434 # two examples: 3435 # 3436 # http://www.sana.sy/eng/21/2009/03/17/217563.htm 3437 # (English, Syrian Arab News # Agency) 3438 # http://thawra.alwehda.gov.sy/_View_news2.asp?FileName=94459258720090318012209 3439 # (Arabic, gov-site) 3440 # 3441 # We have not found any sources saying anything about when DST ends this year. 3442 # 3443 # Our summary 3444 # https://www.timeanddate.com/news/time/syria-dst-starts-march-27-2009.html 3445 3446 # From Steffen Thorsen (2009-10-27): 3447 # The Syrian Arab News Network on 2009-09-29 reported that Syria will 3448 # revert back to winter (standard) time on midnight between Thursday 3449 # 2009-10-29 and Friday 2009-10-30: 3450 # http://www.sana.sy/ara/2/2009/09/29/247012.htm (Arabic) 3451 3452 # From Arthur David Olson (2009-10-28): 3453 # We'll see if future DST switching times turn out to be end of the last 3454 # Thursday of the month or the start of the last Friday of the month or 3455 # something else. For now, use the start of the last Friday. 3456 3457 # From Steffen Thorsen (2010-03-17): 3458 # The "Syrian News Station" reported on 2010-03-16 that the Council of 3459 # Ministers has decided that Syria will start DST on midnight Thursday 3460 # 2010-04-01: (midnight between Thursday and Friday): 3461 # http://sns.sy/sns/?path=news/read/11421 (Arabic) 3462 3463 # From Steffen Thorsen (2012-03-26): 3464 # Today, Syria's government announced that they will start DST early on Friday 3465 # (00:00). This is a bit earlier than the past two years. 3466 # 3467 # From Syrian Arab News Agency, in Arabic: 3468 # http://www.sana.sy/ara/2/2012/03/26/408215.htm 3469 # 3470 # Our brief summary: 3471 # https://www.timeanddate.com/news/time/syria-dst-2012.html 3472 3473 # From Arthur David Olson (2012-03-27): 3474 # Assume last Friday in March going forward XXX. 3475 3476 Rule Syria 2008 only - Apr Fri>=1 0:00 1:00 S 3477 Rule Syria 2008 only - Nov 1 0:00 0 - 3478 Rule Syria 2009 only - Mar lastFri 0:00 1:00 S 3479 Rule Syria 2010 2011 - Apr Fri>=1 0:00 1:00 S 3480 Rule Syria 2012 max - Mar lastFri 0:00 1:00 S 3481 Rule Syria 2009 max - Oct lastFri 0:00 0 - 3482 3483 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3484 Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 3485 2:00 Syria EE%sT 3486 3487 # Tajikistan 3488 # From Shanks & Pottenger. 3489 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3490 Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 3491 5:00 - +05 1930 Jun 21 3492 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s 3493 5:00 1:00 +05/+06 1991 Sep 9 2:00s 3494 5:00 - +05 3495 3496 # Thailand 3497 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3498 Zone Asia/Bangkok 6:42:04 - LMT 1880 3499 6:42:04 - BMT 1920 Apr # Bangkok Mean Time 3500 7:00 - +07 3501 Link Asia/Bangkok Asia/Phnom_Penh # Cambodia 3502 Link Asia/Bangkok Asia/Vientiane # Laos 3503 3504 # Turkmenistan 3505 # From Shanks & Pottenger. 3506 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3507 Zone Asia/Ashgabat 3:53:32 - LMT 1924 May 2 # or Ashkhabad 3508 4:00 - +04 1930 Jun 21 3509 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00 3510 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00 3511 5:00 - +05 3512 3513 # United Arab Emirates 3514 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3515 Zone Asia/Dubai 3:41:12 - LMT 1920 3516 4:00 - +04 3517 Link Asia/Dubai Asia/Muscat # Oman 3518 3519 # Uzbekistan 3520 # Byalokoz 1919 says Uzbekistan was 4:27:53. 3521 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3522 Zone Asia/Samarkand 4:27:53 - LMT 1924 May 2 3523 4:00 - +04 1930 Jun 21 3524 5:00 - +05 1981 Apr 1 3525 5:00 1:00 +06 1981 Oct 1 3526 6:00 - +06 1982 Apr 1 3527 5:00 RussiaAsia +05/+06 1992 3528 5:00 - +05 3529 # Milne says Tashkent was 4:37:10.8; round to nearest. 3530 Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 3531 5:00 - +05 1930 Jun 21 3532 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00 3533 5:00 RussiaAsia +05/+06 1992 3534 5:00 - +05 3535 3536 # Vietnam 3537 3538 # From Paul Eggert (2014-10-04): 3539 # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being 3540 # used in Lower Laos, Cambodia, and Annam. But this is quite a ways 3541 # from Saigon's location. For now, ignore this and stick with Shanks 3542 # and Pottenger for LMT before 1906. 3543 3544 # From Arthur David Olson (2008-03-18): 3545 # The English-language name of Vietnam's most populous city is "Ho Chi Minh 3546 # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters. 3547 3548 # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân: 3549 # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)" 3550 # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50, 3551 # is quoted verbatim in: 3552 # http://www.thoigian.com.vn/?mPage=P80D01 3553 # is translated by Brian Inglis in: 3554 # https://mm.icann.org/pipermail/tz/2014-October/021654.html 3555 # and is the basis for the information below. 3556 # 3557 # The 1906 transition was effective July 1 and standardized Indochina to 3558 # Phù Liễn Observatory, legally 104° 17' 17" east of Paris. 3559 # It's unclear whether this meant legal Paris Mean Time (00:09:21) or 3560 # the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333... 3561 # and the latter 07:06:29.333... so either way it rounds to 07:06:30, 3562 # which is used below even though the modern-day Phù Liễn Observatory 3563 # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. 3564 # 3565 # The following transitions occurred in Indochina in general (before 1954) 3566 # and in South Vietnam in particular (after 1954): 3567 # To 07:00 on 1911-05-01. 3568 # To 08:00 on 1942-12-31 at 23:00. 3569 # To 09:00 in 1945-03-14 at 23:00. 3570 # To 07:00 on 1945-09-02 in Vietnam. 3571 # To 08:00 on 1947-04-01 in French-controlled Indochina. 3572 # To 07:00 on 1955-07-01 in South Vietnam. 3573 # To 08:00 on 1959-12-31 at 23:00 in South Vietnam. 3574 # To 07:00 on 1975-06-13 in South Vietnam. 3575 # 3576 # Trần cites the following sources; it's unclear which supplied the info above. 3577 # 3578 # Hoàng Xuân Hãn: "Lịch và lịch Việt Nam". Tập san Khoa học Xã hội, 3579 # No. 9, Paris, February 1982. 3580 # 3581 # Lê Thành Lân: "Lịch và niên biểu lịch sử hai mươi thế kỷ (0001-2010)", 3582 # NXB Thống kê, Hanoi, 2000. 3583 # 3584 # Lê Thành Lân: "Lịch hai thế kỷ (1802-2010) và các lịch vĩnh cửu", 3585 # NXB Thuận Hoá, Huế, 1995. 3586 3587 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 3588 Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 3589 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 3590 7:00 - +07 1942 Dec 31 23:00 3591 8:00 - +08 1945 Mar 14 23:00 3592 9:00 - +09 1945 Sep 2 3593 7:00 - +07 1947 Apr 1 3594 8:00 - +08 1955 Jul 1 3595 7:00 - +07 1959 Dec 31 23:00 3596 8:00 - +08 1975 Jun 13 3597 7:00 - +07 3598 3599 # Yemen 3600 # See Asia/Riyadh.