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 122 # in 1996, though it did use DST in 1995.  IATA SSIM (1991/1998) reports that
 123 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
 124 # but started switching at 3:00s in 1998.
 125 
 126 # From Arthur David Olson (2011-06-15):
 127 # While Russia abandoned DST in 2011, Armenia may choose to
 128 # follow Russia's "old" rules.
 129 
 130 # From Alexander Krivenyshev (2012-02-10):
 131 # According to News Armenia, on Feb 9, 2012,
 132 # http://newsarmenia.ru/society/20120209/42609695.html
 133 #
 134 # The Armenia National Assembly adopted final reading of Amendments to the
 135 # Law "On procedure of calculation time on the territory of the Republic of
 136 # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
 137 # or
 138 # (brief)
 139 # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
 140 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 141 Zone    Asia/Yerevan    2:58:00 -       LMT     1924 May  2
 142                         3:00    -       YERT    1957 Mar    # Yerevan Time
 143                         4:00 RussiaAsia YER%sT  1991 Mar 31  2:00s
 144                         3:00    1:00    YERST   1991 Sep 23 # independence
 145                         3:00 RussiaAsia AM%sT   1995 Sep 24  2:00s
 146                         4:00    -       AMT     1997
 147                         4:00 RussiaAsia AM%sT   2012 Feb  9
 148                         4:00    -       AMT
 149 
 150 # Azerbaijan
 151 
 152 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
 153 # According to the resolution of Cabinet of Ministers, 1997
 154 # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
 155 # http://code.az/files/daylight_res.pdf
 156 
 157 # From Steffen Thorsen (2016-03-17):
 158 # ... the Azerbaijani Cabinet of Ministers has cancelled switching to
 159 # daylight saving time....
 160 # http://www.azernews.az/azerbaijan/94137.html
 161 # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html
 162 # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html
 163 
 164 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 165 Rule    Azer    1997    2015    -       Mar     lastSun  4:00   1:00    S
 166 Rule    Azer    1997    2015    -       Oct     lastSun  5:00   0       -
 167 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 168 Zone    Asia/Baku       3:19:24 -       LMT     1924 May  2
 169                         3:00    -       BAKT    1957 Mar    # Baku Time
 170                         4:00 RussiaAsia BAK%sT  1991 Mar 31  2:00s
 171                         3:00    1:00    BAKST   1991 Aug 30 # independence
 172                         3:00 RussiaAsia AZ%sT   1992 Sep lastSun  2:00s
 173                         4:00    -       AZT     1996     # Azerbaijan Time
 174                         4:00    EUAsia  AZ%sT   1997
 175                         4:00    Azer    AZ%sT
 176 
 177 # Bahrain
 178 # See Asia/Qatar.
 179 
 180 # Bangladesh
 181 # From Alexander Krivenyshev (2009-05-13):
 182 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
 183 # Daylight Saving Time from June 16 to Sept 30
 184 #
 185 # Bangladesh to introduce daylight saving time likely from June 16
 186 # http://www.asiantribune.com/?q=node/17288
 187 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html
 188 #
 189 # "... Bangladesh government has decided to switch daylight saving time from
 190 # June
 191 # 16 till September 30 in a bid to ensure maximum use of daylight to cope with
 192 # crippling power crisis. "
 193 #
 194 # The switch will remain in effect from June 16 to Sept 30 (2009) but if
 195 # implemented the next year, it will come in force from April 1, 2010


 274 # 1997 and later maps say 6:00.  Assume the switch occurred in 1996.
 275 # We have no information as to when standard time was introduced;
 276 # assume it occurred in 1907, the same year as Mauritius (which
 277 # then contained the Chagos Archipelago).
 278 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 279 Zone    Indian/Chagos   4:49:40 -       LMT     1907
 280                         5:00    -       IOT     1996 # BIOT Time
 281                         6:00    -       IOT
 282 
 283 # Brunei
 284 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 285 Zone    Asia/Brunei     7:39:40 -       LMT     1926 Mar # Bandar Seri Begawan
 286                         7:30    -       BNT     1933
 287                         8:00    -       BNT
 288 
 289 # Burma / Myanmar
 290 
 291 # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
 292 
 293 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 294 Zone    Asia/Rangoon    6:24:40 -       LMT     1880        # or Yangon
 295                         6:24:40 -       RMT     1920        # Rangoon Mean Time?
 296                         6:30    -       BURT    1942 May    # Burma Time
 297                         9:00    -       JST     1945 May  3
 298                         6:30    -       MMT     # Myanmar Time
 299 
 300 # Cambodia
 301 # See Asia/Bangkok.
 302 
 303 
 304 # China
 305 
 306 # From Guy Harris:
 307 # People's Republic of China.  Yes, they really have only one time zone.
 308 
 309 # From Bob Devine (1988-01-28):
 310 # No they don't.  See TIME mag, 1986-02-17 p.52.  Even though
 311 # China is across 4 physical time zones, before Feb 1, 1986 only the
 312 # Peking (Beijing) time zone was recognized.  Since that date, China
 313 # has two of 'em - Peking's and Ürümqi (named after the capital of
 314 # the Xinjiang Uyghur Autonomous Region).  I don't know about DST for it.


 389 #   * "From the end of the 19th century" it changed to UT+8.
 390 #   * Chinese Customs (by then reduced to a tool of foreign powers)
 391 #     eventually standardized on this time for all ports, and it
 392 #     became used by railways as well.
 393 #   * In 1918 the Central Observatory proposed dividing China into
 394 #     five time zones (see below for details).  This caught on
 395 #     at first only in coastal areas observing UT+8.
 396 #   * During WWII all of China was in theory was at UT+7.  In practice
 397 #     this was ignored in the west, and I presume was ignored in
 398 #     Japanese-occupied territory.
 399 #   * Japanese-occupied Manchuria was at UT+9, i.e., Japan time.
 400 #   * The five-zone plan was resurrected after WWII and officially put into
 401 #     place (with some modifications) in March 1948.  It's not clear
 402 #     how well it was observed in areas under Nationalist control.
 403 #   * The People's Liberation Army used UT+8 during the civil war.
 404 #
 405 # An AP article "Shanghai Internat'l Area Little Changed" in the
 406 # Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is
 407 # different - the occupied districts going by Tokyo time, an hour
 408 # ahead of that prevailing in the rest of Shanghai."  Guess that the
 409 # Xujiahui Observatory was under French control and stuck with UT+8.
 410 #
 411 # In earlier versions of this file, China had many separate Zone entries, but
 412 # this was based on what were apparently incorrect data in Shanks & Pottenger.
 413 # This has now been simplified to the two entries Asia/Shanghai and
 414 # Asia/Urumqi, with the others being links for backward compatibility.
 415 # Proposed in 1918 and theoretically in effect until 1949 (although in practice
 416 # mainly observed in coastal areas), the five zones were:
 417 #
 418 # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT+8.5
 419 # Asia/Harbin (currently a link to Asia/Shanghai)
 420 # Heilongjiang (except Mohe county), Jilin
 421 #
 422 # Zhongyuan Time ("Central plain Time") UT+8
 423 # Asia/Shanghai
 424 # most of China
 425 # This currently represents most other zones as well,
 426 # as apparently these regions have been the same since 1970.
 427 # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest.
 428 # Guo says Shanghai switched to UT+8 "from the end of the 19th century".
 429 #
 430 # Long-shu Time (probably due to Long and Shu being two names of that area) UT+7
 431 # Asia/Chongqing (currently a link to Asia/Shanghai)
 432 # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
 433 # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
 434 # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
 435 # Yangchun, Yangjiang, Yu'nan, and Yunfu.
 436 #
 437 # Xin-zang Time ("Xinjiang-Tibet Time") UT+6
 438 # Asia/Urumqi
 439 # This currently represents Kunlun Time as well,
 440 # as apparently the two regions have been the same since 1970.
 441 # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
 442 # the Guangdong counties  Xuwen, Haikang, Suixi, Lianjiang,
 443 # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
 444 # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi;
 445 # east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe,
 446 # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin,
 447 # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami,
 448 # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
 449 #
 450 # Kunlun Time UT+5.5
 451 # Asia/Kashgar (currently a link to Asia/Urumqi)
 452 # West Tibet, including Pulan, Aheqi, Shufu, Shule;
 453 # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
 454 # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
 455 # and Yarkand.
 456 
 457 # From Luther Ma (2009-10-17):
 458 # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in
 459 # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time,
 460 # but have no need of it. All planes, trains, and schools function on
 461 # what is called "Beijing time." When Han make an appointment in Chinese
 462 # they implicitly use Beijing time.
 463 #
 464 # On the other hand, ethnic Uyghurs, who make up about half the
 465 # population of Xinjiang, typically use "Xinjiang time" which is two
 466 # hours behind Beijing time, or UTC +0600. The government of the Xinjiang
 467 # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as
 468 # local governments such as the Ürümqi city government use both times in
 469 # publications, referring to what is popularly called Xinjiang time as
 470 # "Ürümqi time." When Uyghurs make an appointment in the Uyghur language
 471 # they almost invariably use Xinjiang time.
 472 #
 473 # (Their ethnic Han compatriots would typically have no clue of its
 474 # widespread use, however, because so extremely few of them are fluent in
 475 # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.)
 476 #
 477 # (...As with the rest of China there was a brief interval ending in 1990
 478 # or 1991 when summer time was in use.  The confusion was severe, with
 479 # the province not having dual times but four times in use at the same
 480 # time. Some areas remained on standard Xinjiang time or Beijing time and
 481 # others moving their clocks ahead.)
 482 
 483 # From Luther Ma (2009-11-19):
 484 # With the risk of being redundant to previous answers these are the most common
 485 # English "transliterations" (w/o using non-English symbols):
 486 #


 502 # not be using Beijing time, but some local time.)
 503 
 504 # From David Cochrane (2014-03-26):
 505 # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986:
 506 # http://content.time.com/time/magazine/article/0,9171,960684,00.html
 507 
 508 # From Luther Ma (2014-04-22):
 509 # I have interviewed numerous people of various nationalities and from
 510 # different localities in Xinjiang and can confirm the information in Guo's
 511 # report regarding Xinjiang, as well as the Time article reference by David
 512 # Cochrane.  Whether officially recognized or not (and both are officially
 513 # recognized), two separate times have been in use in Xinjiang since at least
 514 # the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time;
 515 # and Beijing Time.  There is no confusion in Xinjiang as to which name refers
 516 # to which time. Both are widely used in the province, although in some
 517 # population groups might be use one to the exclusion of the other.  The only
 518 # problem is that computers and smart phones list Ürümqi (or Kashgar) as
 519 # having the same time as Beijing.
 520 
 521 # From Paul Eggert (2014-06-30):
 522 # In the early days of the PRC, Tibet was given its own time zone (UT+6) but
 523 # this was withdrawn in 1959 and never reinstated; see Tubten Khétsun,
 524 # Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN
 525 # 978-0231142861 (2008), translator's introduction by Matthew Akester, p x.
 526 # As this is before our 1970 cutoff, Tibet doesn't need a separate zone.
 527 #
 528 # Xinjiang Time is well-documented as being officially recognized.  E.g., see
 529 # "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government"
 530 # <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22).
 531 # Unfortunately, we have no good records of time in Xinjiang before 1986.
 532 # During the 20th century parts of Xinjiang were ruled by the Qing dynasty,
 533 # the Republic of China, various warlords, the First and Second East Turkestan
 534 # Republics, the Soviet Union, the Kuomintang, and the People's Republic of
 535 # China, and tracking down all these organizations' timekeeping rules would be
 536 # quite a trick.  Approximate this lost history by a transition from LMT to
 537 # XJT at the start of 1928, the year of accession of the warlord Jin Shuren,
 538 # which happens to be the date given by Shanks & Pottenger (no doubt as a
 539 # guess) as the transition from LMT.  Ignore the usage of UT+8 before
 540 # 1986-02-01 under the theory that the transition date to UT+8 is unknown and
 541 # that the sort of users who prefer Asia/Urumqi now typically ignored the
 542 # UT+8 mandate back then.
 543 
 544 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 545 # Beijing time, used throughout China; represented by Shanghai.
 546 Zone    Asia/Shanghai   8:05:43 -       LMT     1901
 547                         8:00    Shang   C%sT    1949
 548                         8:00    PRC     C%sT
 549 # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
 550 # / Wulumuqi.  (Please use Asia/Shanghai if you prefer Beijing time.)
 551 Zone    Asia/Urumqi     5:50:20 -       LMT     1928
 552                         6:00    -       XJT
 553 
 554 
 555 # Hong Kong (Xianggang)
 556 
 557 # Milne gives 7:36:41.7; round this.
 558 
 559 # From Lee Yiu Chung (2009-10-24):
 560 # I found there are some mistakes for the...DST rule for Hong
 561 # Kong. [According] to the DST record from Hong Kong Observatory (actually,
 562 # it is not [an] observatory, but the official meteorological agency of HK,


 727 #
 728 # Original Bulletin:
 729 # http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF
 730 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.)
 731 #
 732 # In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that
 733 # telegram announcement from Taiwan Province Government:
 734 #
 735 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431
 736 #
 737 # Here is a brief translation:
 738 #
 739 #   The Summer Time this year is adopted from midnight Apr 15 until Sep 20
 740 #   midnight. To save (energy?) consumption, we're expanding Summer Time
 741 #   adoption till Oct 31 midnight.
 742 #
 743 # The Central Weather Bureau website didn't mention that, however it can
 744 # be found from historical government announcement database.
 745 
 746 # From Paul Eggert (2014-07-03):
 747 # As per Yu-Cheng Chuang, say that Taiwan was at UT+9 from 1937-10-01
 748 # until 1945-09-21 at 01:00, overriding Shanks & Pottenger.
 749 # Likewise, use Yu-Cheng Chuang's data for DST in Taiwan.
 750 
 751 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 752 Rule    Taiwan  1946    only    -       May     15      0:00    1:00    D
 753 Rule    Taiwan  1946    only    -       Oct     1       0:00    0       S
 754 Rule    Taiwan  1947    only    -       Apr     15      0:00    1:00    D
 755 Rule    Taiwan  1947    only    -       Nov     1       0:00    0       S
 756 Rule    Taiwan  1948    1951    -       May     1       0:00    1:00    D
 757 Rule    Taiwan  1948    1951    -       Oct     1       0:00    0       S
 758 Rule    Taiwan  1952    only    -       Mar     1       0:00    1:00    D
 759 Rule    Taiwan  1952    1954    -       Nov     1       0:00    0       S
 760 Rule    Taiwan  1953    1959    -       Apr     1       0:00    1:00    D
 761 Rule    Taiwan  1955    1961    -       Oct     1       0:00    0       S
 762 Rule    Taiwan  1960    1961    -       Jun     1       0:00    1:00    D
 763 Rule    Taiwan  1974    1975    -       Apr     1       0:00    1:00    D
 764 Rule    Taiwan  1974    1975    -       Oct     1       0:00    0       S
 765 Rule    Taiwan  1979    only    -       Jul     1       0:00    1:00    D
 766 Rule    Taiwan  1979    only    -       Oct     1       0:00    0       S
 767 


 841 # Mikheil Saakashvili, who said the change was partly prompted by the process
 842 # of integration into Europe.
 843 
 844 # From Teimuraz Abashidze (2005-11-07):
 845 # Government of Georgia ... decided to NOT CHANGE daylight savings time on
 846 # [Oct.] 30, as it was done before during last more than 10 years.
 847 # Currently, we are in fact GMT +4:00, as before 30 October it was GMT
 848 # +3:00.... The problem is, there is NO FORMAL LAW or governmental document
 849 # about it.  As far as I can find, I was told, that there is no document,
 850 # because we just DIDN'T ISSUE document about switching to winter time....
 851 # I don't know what can be done, especially knowing that some years ago our
 852 # DST rules where changed THREE TIMES during one month.
 853 
 854 # Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7.
 855 # Byalokoz 1919 says Georgia was 2:59:11.
 856 # Go with Byalokoz.
 857 
 858 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 859 Zone    Asia/Tbilisi    2:59:11 -       LMT     1880
 860                         2:59:11 -       TBMT    1924 May  2 # Tbilisi Mean Time
 861                         3:00    -       TBIT    1957 Mar    # Tbilisi Time
 862                         4:00 RussiaAsia TBI%sT  1991 Mar 31  2:00s
 863                         3:00    1:00    TBIST   1991 Apr  9 # independence
 864                         3:00 RussiaAsia GE%sT   1992        # Georgia Time
 865                         3:00 E-EurAsia  GE%sT   1994 Sep lastSun
 866                         4:00 E-EurAsia  GE%sT   1996 Oct lastSun
 867                         4:00    1:00    GEST    1997 Mar lastSun
 868                         4:00 E-EurAsia  GE%sT   2004 Jun 27
 869                         3:00 RussiaAsia GE%sT   2005 Mar lastSun  2:00
 870                         4:00    -       GET
 871 
 872 # East Timor
 873 
 874 # See Indonesia for the 1945 transition.
 875 
 876 # From João Carrascalão, brother of the former governor of East Timor, in
 877 # East Timor may be late for its millennium
 878 # <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
 879 # Portugal tried to change the time forward in 1974 because the sun
 880 # rises too early but the suggestion raised a lot of problems with the
 881 # Timorese and I still don't think it would work today because it
 882 # conflicts with their way of life.
 883 
 884 # From Paul Eggert (2000-12-04):
 885 # We don't have any record of the above attempt.
 886 # Most likely our records are incomplete, but we have no better data.
 887 
 888 # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
 889 # http://www.hri.org/news/world/undh/2000/00-08-16.undh.html
 890 # (2000-08-16):


 927 #
 928 # From Paul Eggert (2014-09-06):
 929 # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia
 930 # civil time was 7:07:12.5; round to even for Jakarta.
 931 #
 932 # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
 933 # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime
 934 # says that Indonesia's time zones changed on 1988-01-01.  Looking at some
 935 # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
 936 # and Kalimantan Tengah) switching from UTC+8 to UTC+7.
 937 #
 938 # From Paul Eggert (2007-03-10):
 939 # Here is another correction to Shanks & Pottenger.
 940 # JohnTWB writes that Japanese forces did not surrender control in
 941 # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and
 942 # other formal surrender ceremonies were September 9, 11, and 13, plus
 943 # September 12 for the regional surrender to Mountbatten in Singapore.
 944 # These would be the earliest possible times for a change.
 945 # Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions
 946 # Traditionnelles, 1987, Paris) says that Java and Madura switched
 947 # from JST to UTC+07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura
 948 # (Hollandia).  For now, assume all Indonesian locations other than Jayapura
 949 # switched on 1945-09-23.
 950 #
 951 # From Paul Eggert (2013-08-11):
 952 # Normally the tz database uses English-language abbreviations, but in
 953 # Indonesia it's typical to use Indonesian-language abbreviations even
 954 # when writing in English.  For example, see the English-language
 955 # summary published by the Time and Frequency Laboratory of the
 956 # Research Center for Calibration, Instrumentation and Metrology,
 957 # Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29).
 958 # The abbreviations are:
 959 #
 960 # WIB  - UTC+7 - Waktu Indonesia Barat (Indonesia western time)
 961 # WITA - UTC+8 - Waktu Indonesia Tengah (Indonesia central time)
 962 # WIT  - UTC+9 - Waktu Indonesia Timur (Indonesia eastern time)
 963 #
 964 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 965 # Java, Sumatra
 966 Zone Asia/Jakarta       7:07:12 -       LMT     1867 Aug 10
 967 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
 968 # but this must be a typo.
 969                         7:07:12 -       BMT     1923 Dec 31 23:47:12 # Batavia
 970                         7:20    -       JAVT    1932 Nov    # Java Time
 971                         7:30    -       WIB     1942 Mar 23
 972                         9:00    -       JST     1945 Sep 23
 973                         7:30    -       WIB     1948 May
 974                         8:00    -       WIB     1950 May
 975                         7:30    -       WIB     1964
 976                         7:00    -       WIB
 977 # west and central Borneo
 978 Zone Asia/Pontianak     7:17:20 -       LMT     1908 May
 979                         7:17:20 -       PMT     1932 Nov    # Pontianak MT
 980                         7:30    -       WIB     1942 Jan 29
 981                         9:00    -       JST     1945 Sep 23
 982                         7:30    -       WIB     1948 May


1831 
1832 # Kyrgyzstan (Kirgizstan)
1833 # Transitions through 1991 are from Shanks & Pottenger.
1834 
1835 # From Paul Eggert (2005-08-15):
1836 # According to an article dated today in the Kyrgyzstan Development Gateway
1837 # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
1838 # Kyrgyzstan is canceling the daylight saving time system.  I take the article
1839 # to mean that they will leave their clocks at 6 hours ahead of UTC.
1840 # From Malik Abdugaliev (2005-09-21):
1841 # Our government cancels daylight saving time 6th of August 2005.
1842 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
1843 
1844 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
1845 Rule    Kyrgyz  1992    1996    -       Apr     Sun>=7       0:00s   1:00    S
1846 Rule    Kyrgyz  1992    1996    -       Sep     lastSun 0:00    0       -
1847 Rule    Kyrgyz  1997    2005    -       Mar     lastSun 2:30    1:00    S
1848 Rule    Kyrgyz  1997    2004    -       Oct     lastSun 2:30    0       -
1849 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
1850 Zone    Asia/Bishkek    4:58:24 -       LMT     1924 May  2
1851                         5:00    -       FRUT    1930 Jun 21 # Frunze Time
1852                         6:00 RussiaAsia FRU%sT  1991 Mar 31  2:00s
1853                         5:00    1:00    FRUST   1991 Aug 31  2:00 # independence
1854                         5:00    Kyrgyz  KG%sT   2005 Aug 12 # Kyrgyzstan Time
1855                         6:00    -       KGT
1856 
1857 ###############################################################################
1858 
1859 # Korea (North and South)
1860 
1861 # From Annie I. Bang (2006-07-10):
1862 # http://www.koreaherald.com/view.php?ud=200607100012
1863 # Korea ran a daylight saving program from 1949-61 but stopped it
1864 # during the 1950-53 Korean War.  The system was temporarily enforced
1865 # between 1987 and 1988 ...
1866 
1867 # From Sanghyuk Jung (2014-10-29):
1868 # http://mm.icann.org/pipermail/tz/2014-October/021830.html
1869 # According to the Korean Wikipedia
1870 # http://ko.wikipedia.org/wiki/한국_표준시
1871 # [oldid=12896437 2014-09-04 08:03 UTC]
1872 # DST in Republic of Korea was as follows....  And I checked old
1873 # newspapers in Korean, all articles correspond with data in Wikipedia.
1874 # For example, the article in 1948 (Korean Language) proved that DST
1875 # started at June 1 in that year.  For another example, the article in
1876 # 1988 said that DST started at 2:00 AM in that year.
1877 
1878 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
1879 Rule    ROK     1948    only    -       Jun      1      0:00    1:00    D
1880 Rule    ROK     1948    only    -       Sep     13      0:00    0       S
1881 Rule    ROK     1949    only    -       Apr      3      0:00    1:00    D
1882 Rule    ROK     1949    1951    -       Sep     Sun>=8       0:00    0       S
1883 Rule    ROK     1950    only    -       Apr      1      0:00    1:00    D
1884 Rule    ROK     1951    only    -       May      6      0:00    1:00    D
1885 Rule    ROK     1955    only    -       May      5      0:00    1:00    D
1886 Rule    ROK     1955    only    -       Sep      9      0:00    0       S
1887 Rule    ROK     1956    only    -       May     20      0:00    1:00    D
1888 Rule    ROK     1956    only    -       Sep     30      0:00    0       S
1889 Rule    ROK     1957    1960    -       May     Sun>=1       0:00    1:00    D
1890 Rule    ROK     1957    1960    -       Sep     Sun>=18      0:00    0       S
1891 Rule    ROK     1987    1988    -       May     Sun>=8       2:00    1:00    D
1892 Rule    ROK     1987    1988    -       Oct     Sun>=8       3:00    0       S
1893 
1894 # From Paul Eggert (2014-10-30):
1895 # The Korean Wikipedia entry gives the following sources for UT offsets:
1896 #
1897 # 1908: Official Journal Article No. 3994 (Edict No. 5)
1898 # 1912: Governor-General of Korea Official Gazette Issue No. 367
1899 #       (Announcement No. 338)
1900 # 1954: Presidential Decree No. 876 (1954-03-17)
1901 # 1961: Law No. 676 (1961-08-07)
1902 # 1987: Law No. 3919 (1986-12-31)
1903 #
1904 # The Wikipedia entry also has confusing information about a change
1905 # to UT+9 in April 1910, but then what would be the point of the later change
1906 # to UT+9 on 1912-01-01?  Omit the 1910 change for now.
1907 #
1908 # I guessed that time zone abbreviations through 1945 followed the same
1909 # rules as discussed under Taiwan, with nominal switches from JST to KST
1910 # when the respective cities were taken over by the Allies after WWII.
1911 #
1912 # For Pyongyang we have no information; guess no changes since World War II.

1913 
1914 # From Steffen Thorsen (2015-08-07):
1915 # According to many news sources, North Korea is going to change to
1916 # the 8:30 time zone on August 15, one example:
1917 # http://www.bbc.com/news/world-asia-33815049
1918 #
1919 # From Paul Eggert (2015-08-15):
1920 # Bells rang out midnight (00:00) Friday as part of the celebrations.  See:
1921 # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
1922 # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
1923 # There is no common English-language abbreviation for this time zone.
1924 # Use KST, as that's what we already use for 1954-1961 in ROK.
1925 
1926 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
1927 Zone    Asia/Seoul      8:27:52 -       LMT     1908 Apr  1
1928                         8:30    -       KST     1912 Jan  1
1929                         9:00    -       JCST    1937 Oct  1
1930                         9:00    -       JST     1945 Sep  8
1931                         9:00    -       KST     1954 Mar 21
1932                         8:30    ROK     K%sT    1961 Aug 10


2052 # Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv,
2053 #       Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi
2054 # Provinces [at 9:00]: Dornod, Sükhbaatar
2055 #
2056 # [The province of Selenge is omitted from the above lists.]
2057 
2058 # From Ganbold Ts., Ulaanbaatar (2004-04-17):
2059 # Daylight saving occurs at 02:00 local time last Saturday of March.
2060 # It will change back to normal at 02:00 local time last Saturday of
2061 # September.... As I remember this rule was changed in 2001.
2062 #
2063 # From Paul Eggert (2004-04-17):
2064 # For now, assume Rives McDow's informant got confused about Friday vs
2065 # Saturday, and that his 2001 dates should have 1 added to them.
2066 
2067 # From Paul Eggert (2005-07-26):
2068 # We have wildly conflicting information about Mongolia's time zones.
2069 # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
2070 # there is only one time zone and that DST is observed, citing Microsoft
2071 # Windows XP as the source.  Risto Nykänen (2005-05-16) reports that
2072 # travelmongolia.org says there are two time zones (UTC+7, UTC+8) with no DST.
2073 # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
2074 # Washington, DC says there are two time zones, with DST observed.
2075 # He also found
2076 # http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&
2077 # which also says that there is DST, and which has a comment by "Toddius"
2078 # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
2079 # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
2080 # and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT.
2081 # The SUKH timezone is new this year, it is one of the few things the
2082 # parliament passed during the tumultuous winter session."
2083 # For now, let's ignore this information, until we have more confirmation.
2084 
2085 # From Ganbold Ts. (2007-02-26):
2086 # Parliament of Mongolia has just changed the daylight-saving rule in February.
2087 # They decided not to adopt daylight-saving time....
2088 # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742
2089 
2090 # From Deborah Goldsmith (2008-03-30):
2091 # We received a bug report claiming that the tz database UTC offset for
2092 # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT


2688 
2689 # Saudi Arabia
2690 #
2691 # From Paul Eggert (2014-07-15):
2692 # Time in Saudi Arabia and other countries in the Arabian peninsula was not
2693 # standardized until relatively recently; we don't know when, and possibly it
2694 # has never been made official.  Richard P Hunt, in "Islam city yielding to
2695 # modern times", New York Times (1961-04-09), p 20, wrote that only airlines
2696 # observed standard time, and that people in Jeddah mostly observed quasi-solar
2697 # time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
2698 # o'clock for "Arab" time).
2699 #
2700 # The TZ database cannot represent quasi-solar time; airline time is the best
2701 # we can do.  The 1946 foreign air news digest of the U.S. Civil Aeronautics
2702 # Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
2703 # a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and
2704 # Jidda, on March 14, 1947".  Shanks & Pottenger guessed 1950; go with the
2705 # earlier date.
2706 #
2707 # Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
2708 # time zones; the other zone, at UTC+4, was in the far eastern part of
2709 # the country.  Ignore this, as it's before our 1970 cutoff.
2710 #
2711 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2712 Zone    Asia/Riyadh     3:06:52 -       LMT     1947 Mar 14
2713                         3:00    -       AST
2714 Link Asia/Riyadh Asia/Aden      # Yemen
2715 Link Asia/Riyadh Asia/Kuwait
2716 
2717 # Singapore
2718 # taken from Mok Ly Yng (2003-10-30)
2719 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
2720 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2721 Zone    Asia/Singapore  6:55:25 -       LMT     1901 Jan  1
2722                         6:55:25 -       SMT     1905 Jun  1 # Singapore M.T.
2723                         7:00    -       MALT    1933 Jan  1 # Malaya Time
2724                         7:00    0:20    MALST   1936 Jan  1
2725                         7:20    -       MALT    1941 Sep  1
2726                         7:30    -       MALT    1942 Feb 16
2727                         9:00    -       JST     1945 Sep 12
2728                         7:30    -       MALT    1965 Aug  9 # independence


2957 # http://www.timeanddate.com/news/time/syria-dst-2012.html
2958 
2959 # From Arthur David Olson (2012-03-27):
2960 # Assume last Friday in March going forward XXX.
2961 
2962 Rule    Syria   2008    only    -       Apr     Fri>=1       0:00    1:00    S
2963 Rule    Syria   2008    only    -       Nov     1       0:00    0       -
2964 Rule    Syria   2009    only    -       Mar     lastFri 0:00    1:00    S
2965 Rule    Syria   2010    2011    -       Apr     Fri>=1       0:00    1:00    S
2966 Rule    Syria   2012    max     -       Mar     lastFri 0:00    1:00    S
2967 Rule    Syria   2009    max     -       Oct     lastFri 0:00    0       -
2968 
2969 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2970 Zone    Asia/Damascus   2:25:12 -       LMT     1920 # Dimashq
2971                         2:00    Syria   EE%sT
2972 
2973 # Tajikistan
2974 # From Shanks & Pottenger.
2975 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2976 Zone    Asia/Dushanbe   4:35:12 -       LMT     1924 May  2
2977                         5:00    -       DUST    1930 Jun 21 # Dushanbe Time
2978                         6:00 RussiaAsia DUS%sT  1991 Mar 31  2:00s
2979                         5:00    1:00    DUSST   1991 Sep  9  2:00s
2980                         5:00    -       TJT     # Tajikistan Time
2981 
2982 # Thailand
2983 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2984 Zone    Asia/Bangkok    6:42:04 -       LMT     1880
2985                         6:42:04 -       BMT     1920 Apr # Bangkok Mean Time
2986                         7:00    -       ICT
2987 Link Asia/Bangkok Asia/Phnom_Penh       # Cambodia
2988 Link Asia/Bangkok Asia/Vientiane        # Laos
2989 
2990 # Turkmenistan
2991 # From Shanks & Pottenger.
2992 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2993 Zone    Asia/Ashgabat   3:53:32 -       LMT     1924 May  2 # or Ashkhabad
2994                         4:00    -       ASHT    1930 Jun 21 # Ashkhabad Time
2995                         5:00 RussiaAsia ASH%sT  1991 Mar 31  2:00
2996                         4:00 RussiaAsia ASH%sT  1991 Oct 27 # independence
2997                         4:00 RussiaAsia TM%sT   1992 Jan 19  2:00
2998                         5:00    -       TMT
2999 
3000 # United Arab Emirates
3001 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
3002 Zone    Asia/Dubai      3:41:12 -       LMT     1920
3003                         4:00    -       GST
3004 Link Asia/Dubai Asia/Muscat     # Oman
3005 
3006 # Uzbekistan
3007 # Byalokoz 1919 says Uzbekistan was 4:27:53.
3008 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
3009 Zone    Asia/Samarkand  4:27:53 -       LMT     1924 May  2
3010                         4:00    -       SAMT    1930 Jun 21 # Samarkand Time
3011                         5:00    -       SAMT    1981 Apr  1
3012                         5:00    1:00    SAMST   1981 Oct  1
3013                         6:00    -       TAST    1982 Apr  1 # Tashkent Time
3014                         5:00 RussiaAsia SAM%sT  1991 Sep  1 # independence
3015                         5:00 RussiaAsia UZ%sT   1992
3016                         5:00    -       UZT
3017 # Milne says Tashkent was 4:37:10.8; round to nearest.
3018 Zone    Asia/Tashkent   4:37:11 -       LMT     1924 May  2
3019                         5:00    -       TAST    1930 Jun 21 # Tashkent Time
3020                         6:00 RussiaAsia TAS%sT  1991 Mar 31  2:00
3021                         5:00 RussiaAsia TAS%sT  1991 Sep  1 # independence
3022                         5:00 RussiaAsia UZ%sT   1992
3023                         5:00    -       UZT
3024 
3025 # Vietnam
3026 
3027 # From Paul Eggert (2014-10-04):
3028 # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
3029 # used in Lower Laos, Cambodia, and Annam.  But this is quite a ways
3030 # from Saigon's location.  For now, ignore this and stick with Shanks
3031 # and Pottenger for LMT before 1906.
3032 
3033 # From Arthur David Olson (2008-03-18):
3034 # The English-language name of Vietnam's most populous city is "Ho Chi Minh
3035 # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
3036 
3037 # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
3038 # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
3039 # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
3040 # is quoted verbatim in:
3041 # http://www.thoigian.com.vn/?mPage=P80D01
3042 # is translated by Brian Inglis in:
3043 # http://mm.icann.org/pipermail/tz/2014-October/021654.html




 122 # in 1996, though it did use DST in 1995.  IATA SSIM (1991/1998) reports that
 123 # Armenia switched from 3:00 to 4:00 in 1998 and observed DST after 1991,
 124 # but started switching at 3:00s in 1998.
 125 
 126 # From Arthur David Olson (2011-06-15):
 127 # While Russia abandoned DST in 2011, Armenia may choose to
 128 # follow Russia's "old" rules.
 129 
 130 # From Alexander Krivenyshev (2012-02-10):
 131 # According to News Armenia, on Feb 9, 2012,
 132 # http://newsarmenia.ru/society/20120209/42609695.html
 133 #
 134 # The Armenia National Assembly adopted final reading of Amendments to the
 135 # Law "On procedure of calculation time on the territory of the Republic of
 136 # Armenia" according to which Armenia [is] abolishing Daylight Saving Time.
 137 # or
 138 # (brief)
 139 # http://www.worldtimezone.com/dst_news/dst_news_armenia03.html
 140 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 141 Zone    Asia/Yerevan    2:58:00 -       LMT     1924 May  2
 142                         3:00    -       +03     1957 Mar
 143                         4:00 RussiaAsia +04/+05 1991 Mar 31  2:00s
 144                         3:00 RussiaAsia +03/+04 1995 Sep 24  2:00s
 145                         4:00    -       +04     1997
 146                         4:00 RussiaAsia +04/+05


 147 
 148 # Azerbaijan
 149 
 150 # From Rustam Aliyev of the Azerbaijan Internet Forum (2005-10-23):
 151 # According to the resolution of Cabinet of Ministers, 1997
 152 # From Paul Eggert (2015-09-17): It was Resolution No. 21 (1997-03-17).
 153 # http://code.az/files/daylight_res.pdf
 154 
 155 # From Steffen Thorsen (2016-03-17):
 156 # ... the Azerbaijani Cabinet of Ministers has cancelled switching to
 157 # daylight saving time....
 158 # http://www.azernews.az/azerbaijan/94137.html
 159 # http://vestnikkavkaza.net/news/Azerbaijani-Cabinet-of-Ministers-cancels-daylight-saving-time.html
 160 # http://en.apa.az/xeber_azerbaijan_abolishes_daylight_savings_ti_240862.html
 161 
 162 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 163 Rule    Azer    1997    2015    -       Mar     lastSun  4:00   1:00    S
 164 Rule    Azer    1997    2015    -       Oct     lastSun  5:00   0       -
 165 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 166 Zone    Asia/Baku       3:19:24 -       LMT     1924 May  2
 167                         3:00    -       +03     1957 Mar
 168                         4:00 RussiaAsia +04/+05 1991 Mar 31  2:00s
 169                         3:00 RussiaAsia +03/+04 1992 Sep lastSun  2:00s
 170                         4:00    -       +04     1996
 171                         4:00    EUAsia  +04/+05 1997
 172                         4:00    Azer    +04/+05

 173 
 174 # Bahrain
 175 # See Asia/Qatar.
 176 
 177 # Bangladesh
 178 # From Alexander Krivenyshev (2009-05-13):
 179 # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce
 180 # Daylight Saving Time from June 16 to Sept 30
 181 #
 182 # Bangladesh to introduce daylight saving time likely from June 16
 183 # http://www.asiantribune.com/?q=node/17288
 184 # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html
 185 #
 186 # "... Bangladesh government has decided to switch daylight saving time from
 187 # June
 188 # 16 till September 30 in a bid to ensure maximum use of daylight to cope with
 189 # crippling power crisis. "
 190 #
 191 # The switch will remain in effect from June 16 to Sept 30 (2009) but if
 192 # implemented the next year, it will come in force from April 1, 2010


 271 # 1997 and later maps say 6:00.  Assume the switch occurred in 1996.
 272 # We have no information as to when standard time was introduced;
 273 # assume it occurred in 1907, the same year as Mauritius (which
 274 # then contained the Chagos Archipelago).
 275 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 276 Zone    Indian/Chagos   4:49:40 -       LMT     1907
 277                         5:00    -       IOT     1996 # BIOT Time
 278                         6:00    -       IOT
 279 
 280 # Brunei
 281 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 282 Zone    Asia/Brunei     7:39:40 -       LMT     1926 Mar # Bandar Seri Begawan
 283                         7:30    -       BNT     1933
 284                         8:00    -       BNT
 285 
 286 # Burma / Myanmar
 287 
 288 # Milne says 6:24:40 was the meridian of the time ball observatory at Rangoon.
 289 
 290 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 291 Zone    Asia/Yangon     6:24:40 -       LMT     1880        # or Rangoon
 292                         6:24:40 -       RMT     1920        # Rangoon Mean Time?
 293                         6:30    -       BURT    1942 May    # Burma Time
 294                         9:00    -       JST     1945 May  3
 295                         6:30    -       MMT     # Myanmar Time
 296 
 297 # Cambodia
 298 # See Asia/Bangkok.
 299 
 300 
 301 # China
 302 
 303 # From Guy Harris:
 304 # People's Republic of China.  Yes, they really have only one time zone.
 305 
 306 # From Bob Devine (1988-01-28):
 307 # No they don't.  See TIME mag, 1986-02-17 p.52.  Even though
 308 # China is across 4 physical time zones, before Feb 1, 1986 only the
 309 # Peking (Beijing) time zone was recognized.  Since that date, China
 310 # has two of 'em - Peking's and Ürümqi (named after the capital of
 311 # the Xinjiang Uyghur Autonomous Region).  I don't know about DST for it.


 386 #   * "From the end of the 19th century" it changed to UT+8.
 387 #   * Chinese Customs (by then reduced to a tool of foreign powers)
 388 #     eventually standardized on this time for all ports, and it
 389 #     became used by railways as well.
 390 #   * In 1918 the Central Observatory proposed dividing China into
 391 #     five time zones (see below for details).  This caught on
 392 #     at first only in coastal areas observing UT+8.
 393 #   * During WWII all of China was in theory was at UT+7.  In practice
 394 #     this was ignored in the west, and I presume was ignored in
 395 #     Japanese-occupied territory.
 396 #   * Japanese-occupied Manchuria was at UT+9, i.e., Japan time.
 397 #   * The five-zone plan was resurrected after WWII and officially put into
 398 #     place (with some modifications) in March 1948.  It's not clear
 399 #     how well it was observed in areas under Nationalist control.
 400 #   * The People's Liberation Army used UT+8 during the civil war.
 401 #
 402 # An AP article "Shanghai Internat'l Area Little Changed" in the
 403 # Lewiston (ME) Daily Sun (1939-05-29), p 17, said "Even the time is
 404 # different - the occupied districts going by Tokyo time, an hour
 405 # ahead of that prevailing in the rest of Shanghai."  Guess that the
 406 # Xujiahui Observatory was under French control and stuck with UT +08.
 407 #
 408 # In earlier versions of this file, China had many separate Zone entries, but
 409 # this was based on what were apparently incorrect data in Shanks & Pottenger.
 410 # This has now been simplified to the two entries Asia/Shanghai and
 411 # Asia/Urumqi, with the others being links for backward compatibility.
 412 # Proposed in 1918 and theoretically in effect until 1949 (although in practice
 413 # mainly observed in coastal areas), the five zones were:
 414 #
 415 # Changbai Time ("Long-white Time", Long-white = Heilongjiang area) UT +08:30
 416 # Asia/Harbin (currently a link to Asia/Shanghai)
 417 # Heilongjiang (except Mohe county), Jilin
 418 #
 419 # Zhongyuan Time ("Central plain Time") UT +08
 420 # Asia/Shanghai
 421 # most of China
 422 # This currently represents most other zones as well,
 423 # as apparently these regions have been the same since 1970.
 424 # Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest.
 425 # Guo says Shanghai switched to UT +08 "from the end of the 19th century".
 426 #
 427 # Long-shu Time (probably due to Long and Shu being two names of the area) UT +07
 428 # Asia/Chongqing (currently a link to Asia/Shanghai)
 429 # Guangxi, Guizhou, Hainan, Ningxia, Sichuan, Shaanxi, and Yunnan;
 430 # most of Gansu; west Inner Mongolia; west Qinghai; and the Guangdong
 431 # counties Deqing, Enping, Kaiping, Luoding, Taishan, Xinxing,
 432 # Yangchun, Yangjiang, Yu'nan, and Yunfu.
 433 #
 434 # Xin-zang Time ("Xinjiang-Tibet Time") UT +06
 435 # Asia/Urumqi
 436 # This currently represents Kunlun Time as well,
 437 # as apparently the two regions have been the same since 1970.
 438 # The Gansu counties Aksay, Anxi, Dunhuang, Subei; west Qinghai;
 439 # the Guangdong counties  Xuwen, Haikang, Suixi, Lianjiang,
 440 # Zhanjiang, Wuchuan, Huazhou, Gaozhou, Maoming, Dianbai, and Xinyi;
 441 # east Tibet, including Lhasa, Chamdo, Shigaise, Jimsar, Shawan and Hutubi;
 442 # east Xinjiang, including Ürümqi, Turpan, Karamay, Korla, Minfeng, Jinghe,
 443 # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin,
 444 # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami,
 445 # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan.
 446 #
 447 # Kunlun Time UT +05:30
 448 # Asia/Kashgar (currently a link to Asia/Urumqi)
 449 # West Tibet, including Pulan, Aheqi, Shufu, Shule;
 450 # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke,
 451 # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding,
 452 # and Yarkand.
 453 
 454 # From Luther Ma (2009-10-17):
 455 # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in
 456 # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time,
 457 # but have no need of it. All planes, trains, and schools function on
 458 # what is called "Beijing time." When Han make an appointment in Chinese
 459 # they implicitly use Beijing time.
 460 #
 461 # On the other hand, ethnic Uyghurs, who make up about half the
 462 # population of Xinjiang, typically use "Xinjiang time" which is two
 463 # hours behind Beijing time, or UT +06. The government of the Xinjiang
 464 # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as
 465 # local governments such as the Ürümqi city government use both times in
 466 # publications, referring to what is popularly called Xinjiang time as
 467 # "Ürümqi time." When Uyghurs make an appointment in the Uyghur language
 468 # they almost invariably use Xinjiang time.
 469 #
 470 # (Their ethnic Han compatriots would typically have no clue of its
 471 # widespread use, however, because so extremely few of them are fluent in
 472 # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.)
 473 #
 474 # (...As with the rest of China there was a brief interval ending in 1990
 475 # or 1991 when summer time was in use.  The confusion was severe, with
 476 # the province not having dual times but four times in use at the same
 477 # time. Some areas remained on standard Xinjiang time or Beijing time and
 478 # others moving their clocks ahead.)
 479 
 480 # From Luther Ma (2009-11-19):
 481 # With the risk of being redundant to previous answers these are the most common
 482 # English "transliterations" (w/o using non-English symbols):
 483 #


 499 # not be using Beijing time, but some local time.)
 500 
 501 # From David Cochrane (2014-03-26):
 502 # Just a confirmation that Ürümqi time was implemented in Ürümqi on 1 Feb 1986:
 503 # http://content.time.com/time/magazine/article/0,9171,960684,00.html
 504 
 505 # From Luther Ma (2014-04-22):
 506 # I have interviewed numerous people of various nationalities and from
 507 # different localities in Xinjiang and can confirm the information in Guo's
 508 # report regarding Xinjiang, as well as the Time article reference by David
 509 # Cochrane.  Whether officially recognized or not (and both are officially
 510 # recognized), two separate times have been in use in Xinjiang since at least
 511 # the Cultural Revolution: Xinjiang Time (XJT), aka Ürümqi Time or local time;
 512 # and Beijing Time.  There is no confusion in Xinjiang as to which name refers
 513 # to which time. Both are widely used in the province, although in some
 514 # population groups might be use one to the exclusion of the other.  The only
 515 # problem is that computers and smart phones list Ürümqi (or Kashgar) as
 516 # having the same time as Beijing.
 517 
 518 # From Paul Eggert (2014-06-30):
 519 # In the early days of the PRC, Tibet was given its own time zone (UT +06)
 520 # but this was withdrawn in 1959 and never reinstated; see Tubten Khétsun,
 521 # Memories of life in Lhasa under Chinese Rule, Columbia U Press, ISBN
 522 # 978-0231142861 (2008), translator's introduction by Matthew Akester, p x.
 523 # As this is before our 1970 cutoff, Tibet doesn't need a separate zone.
 524 #
 525 # Xinjiang Time is well-documented as being officially recognized.  E.g., see
 526 # "The Working-Calendar for The Xinjiang Uygur Autonomous Region Government"
 527 # <http://www.sinkiang.gov.cn/service/ourworking/> (2014-04-22).
 528 # Unfortunately, we have no good records of time in Xinjiang before 1986.
 529 # During the 20th century parts of Xinjiang were ruled by the Qing dynasty,
 530 # the Republic of China, various warlords, the First and Second East Turkestan
 531 # Republics, the Soviet Union, the Kuomintang, and the People's Republic of
 532 # China, and tracking down all these organizations' timekeeping rules would be
 533 # quite a trick.  Approximate this lost history by a transition from LMT to
 534 # UT +06 at the start of 1928, the year of accession of the warlord Jin Shuren,
 535 # which happens to be the date given by Shanks & Pottenger (no doubt as a
 536 # guess) as the transition from LMT.  Ignore the usage of +08 before
 537 # 1986-02-01 under the theory that the transition date to +08 is unknown and
 538 # that the sort of users who prefer Asia/Urumqi now typically ignored the
 539 # +08 mandate back then.
 540 
 541 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 542 # Beijing time, used throughout China; represented by Shanghai.
 543 Zone    Asia/Shanghai   8:05:43 -       LMT     1901
 544                         8:00    Shang   C%sT    1949
 545                         8:00    PRC     C%sT
 546 # Xinjiang time, used by many in western China; represented by Ürümqi / Ürümchi
 547 # / Wulumuqi.  (Please use Asia/Shanghai if you prefer Beijing time.)
 548 Zone    Asia/Urumqi     5:50:20 -       LMT     1928
 549                         6:00    -       XJT
 550 
 551 
 552 # Hong Kong (Xianggang)
 553 
 554 # Milne gives 7:36:41.7; round this.
 555 
 556 # From Lee Yiu Chung (2009-10-24):
 557 # I found there are some mistakes for the...DST rule for Hong
 558 # Kong. [According] to the DST record from Hong Kong Observatory (actually,
 559 # it is not [an] observatory, but the official meteorological agency of HK,


 724 #
 725 # Original Bulletin:
 726 # http://subtpg.tpg.gov.tw/og/image2.asp?f=03502F0AKM1AF
 727 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0350300AKM1B0 (cont.)
 728 #
 729 # In 1947, DST in Taiwan was expanded to Oct 31. There is a backup of that
 730 # telegram announcement from Taiwan Province Government:
 731 #
 732 # http://subtpg.tpg.gov.tw/og/image2.asp?f=0360310AKZ431
 733 #
 734 # Here is a brief translation:
 735 #
 736 #   The Summer Time this year is adopted from midnight Apr 15 until Sep 20
 737 #   midnight. To save (energy?) consumption, we're expanding Summer Time
 738 #   adoption till Oct 31 midnight.
 739 #
 740 # The Central Weather Bureau website didn't mention that, however it can
 741 # be found from historical government announcement database.
 742 
 743 # From Paul Eggert (2014-07-03):
 744 # As per Yu-Cheng Chuang, say that Taiwan was at UT +09 from 1937-10-01
 745 # until 1945-09-21 at 01:00, overriding Shanks & Pottenger.
 746 # Likewise, use Yu-Cheng Chuang's data for DST in Taiwan.
 747 
 748 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
 749 Rule    Taiwan  1946    only    -       May     15      0:00    1:00    D
 750 Rule    Taiwan  1946    only    -       Oct     1       0:00    0       S
 751 Rule    Taiwan  1947    only    -       Apr     15      0:00    1:00    D
 752 Rule    Taiwan  1947    only    -       Nov     1       0:00    0       S
 753 Rule    Taiwan  1948    1951    -       May     1       0:00    1:00    D
 754 Rule    Taiwan  1948    1951    -       Oct     1       0:00    0       S
 755 Rule    Taiwan  1952    only    -       Mar     1       0:00    1:00    D
 756 Rule    Taiwan  1952    1954    -       Nov     1       0:00    0       S
 757 Rule    Taiwan  1953    1959    -       Apr     1       0:00    1:00    D
 758 Rule    Taiwan  1955    1961    -       Oct     1       0:00    0       S
 759 Rule    Taiwan  1960    1961    -       Jun     1       0:00    1:00    D
 760 Rule    Taiwan  1974    1975    -       Apr     1       0:00    1:00    D
 761 Rule    Taiwan  1974    1975    -       Oct     1       0:00    0       S
 762 Rule    Taiwan  1979    only    -       Jul     1       0:00    1:00    D
 763 Rule    Taiwan  1979    only    -       Oct     1       0:00    0       S
 764 


 838 # Mikheil Saakashvili, who said the change was partly prompted by the process
 839 # of integration into Europe.
 840 
 841 # From Teimuraz Abashidze (2005-11-07):
 842 # Government of Georgia ... decided to NOT CHANGE daylight savings time on
 843 # [Oct.] 30, as it was done before during last more than 10 years.
 844 # Currently, we are in fact GMT +4:00, as before 30 October it was GMT
 845 # +3:00.... The problem is, there is NO FORMAL LAW or governmental document
 846 # about it.  As far as I can find, I was told, that there is no document,
 847 # because we just DIDN'T ISSUE document about switching to winter time....
 848 # I don't know what can be done, especially knowing that some years ago our
 849 # DST rules where changed THREE TIMES during one month.
 850 
 851 # Milne 1899 says Tbilisi (Tiflis) time was 2:59:05.7.
 852 # Byalokoz 1919 says Georgia was 2:59:11.
 853 # Go with Byalokoz.
 854 
 855 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 856 Zone    Asia/Tbilisi    2:59:11 -       LMT     1880
 857                         2:59:11 -       TBMT    1924 May  2 # Tbilisi Mean Time
 858                         3:00    -       +03     1957 Mar
 859                         4:00 RussiaAsia +04/+05 1991 Mar 31  2:00s
 860                         3:00 RussiaAsia +03/+04 1992
 861                         3:00 E-EurAsia  +03/+04 1994 Sep lastSun
 862                         4:00 E-EurAsia  +04/+05 1996 Oct lastSun
 863                         4:00    1:00    +05     1997 Mar lastSun
 864                         4:00 E-EurAsia  +04/+05 2004 Jun 27
 865                         3:00 RussiaAsia +03/+04 2005 Mar lastSun  2:00
 866                         4:00    -       +04

 867 
 868 # East Timor
 869 
 870 # See Indonesia for the 1945 transition.
 871 
 872 # From João Carrascalão, brother of the former governor of East Timor, in
 873 # East Timor may be late for its millennium
 874 # <http://etan.org/et99c/december/26-31/30ETMAY.htm> (1999-12-26/31):
 875 # Portugal tried to change the time forward in 1974 because the sun
 876 # rises too early but the suggestion raised a lot of problems with the
 877 # Timorese and I still don't think it would work today because it
 878 # conflicts with their way of life.
 879 
 880 # From Paul Eggert (2000-12-04):
 881 # We don't have any record of the above attempt.
 882 # Most likely our records are incomplete, but we have no better data.
 883 
 884 # From Manoel de Almeida e Silva, Deputy Spokesman for the UN Secretary-General
 885 # http://www.hri.org/news/world/undh/2000/00-08-16.undh.html
 886 # (2000-08-16):


 923 #
 924 # From Paul Eggert (2014-09-06):
 925 # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia
 926 # civil time was 7:07:12.5; round to even for Jakarta.
 927 #
 928 # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger:
 929 # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime
 930 # says that Indonesia's time zones changed on 1988-01-01.  Looking at some
 931 # time zone maps, I think that must refer to Western Borneo (Kalimantan Barat
 932 # and Kalimantan Tengah) switching from UTC+8 to UTC+7.
 933 #
 934 # From Paul Eggert (2007-03-10):
 935 # Here is another correction to Shanks & Pottenger.
 936 # JohnTWB writes that Japanese forces did not surrender control in
 937 # Indonesia until 1945-09-01 00:00 at the earliest (in Jakarta) and
 938 # other formal surrender ceremonies were September 9, 11, and 13, plus
 939 # September 12 for the regional surrender to Mountbatten in Singapore.
 940 # These would be the earliest possible times for a change.
 941 # Régimes horaires pour le monde entier, by Henri Le Corre, (Éditions
 942 # Traditionnelles, 1987, Paris) says that Java and Madura switched
 943 # from UT +09 to +07:30 on 1945-09-23, and gives 1944-09-01 for Jayapura
 944 # (Hollandia).  For now, assume all Indonesian locations other than Jayapura
 945 # switched on 1945-09-23.
 946 #
 947 # From Paul Eggert (2013-08-11):
 948 # Normally the tz database uses English-language abbreviations, but in
 949 # Indonesia it's typical to use Indonesian-language abbreviations even
 950 # when writing in English.  For example, see the English-language
 951 # summary published by the Time and Frequency Laboratory of the
 952 # Research Center for Calibration, Instrumentation and Metrology,
 953 # Indonesia, <http://time.kim.lipi.go.id/time-eng.php> (2006-09-29).
 954 # The time zone abbreviations and UT offsets are:
 955 #
 956 # WIB  - +07 - Waktu Indonesia Barat (Indonesia western time)
 957 # WITA - +08 - Waktu Indonesia Tengah (Indonesia central time)
 958 # WIT  - +09 - Waktu Indonesia Timur (Indonesia eastern time)
 959 #
 960 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
 961 # Java, Sumatra
 962 Zone Asia/Jakarta       7:07:12 -       LMT     1867 Aug 10
 963 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13,
 964 # but this must be a typo.
 965                         7:07:12 -       BMT     1923 Dec 31 23:47:12 # Batavia
 966                         7:20    -       JAVT    1932 Nov    # Java Time
 967                         7:30    -       WIB     1942 Mar 23
 968                         9:00    -       JST     1945 Sep 23
 969                         7:30    -       WIB     1948 May
 970                         8:00    -       WIB     1950 May
 971                         7:30    -       WIB     1964
 972                         7:00    -       WIB
 973 # west and central Borneo
 974 Zone Asia/Pontianak     7:17:20 -       LMT     1908 May
 975                         7:17:20 -       PMT     1932 Nov    # Pontianak MT
 976                         7:30    -       WIB     1942 Jan 29
 977                         9:00    -       JST     1945 Sep 23
 978                         7:30    -       WIB     1948 May


1827 
1828 # Kyrgyzstan (Kirgizstan)
1829 # Transitions through 1991 are from Shanks & Pottenger.
1830 
1831 # From Paul Eggert (2005-08-15):
1832 # According to an article dated today in the Kyrgyzstan Development Gateway
1833 # http://eng.gateway.kg/cgi-bin/page.pl?id=1&story_name=doc9979.shtml
1834 # Kyrgyzstan is canceling the daylight saving time system.  I take the article
1835 # to mean that they will leave their clocks at 6 hours ahead of UTC.
1836 # From Malik Abdugaliev (2005-09-21):
1837 # Our government cancels daylight saving time 6th of August 2005.
1838 # From 2005-08-12 our GMT-offset is +6, w/o any daylight saving.
1839 
1840 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
1841 Rule    Kyrgyz  1992    1996    -       Apr     Sun>=7       0:00s   1:00    S
1842 Rule    Kyrgyz  1992    1996    -       Sep     lastSun 0:00    0       -
1843 Rule    Kyrgyz  1997    2005    -       Mar     lastSun 2:30    1:00    S
1844 Rule    Kyrgyz  1997    2004    -       Oct     lastSun 2:30    0       -
1845 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
1846 Zone    Asia/Bishkek    4:58:24 -       LMT     1924 May  2
1847                         5:00    -       +05     1930 Jun 21
1848                         6:00 RussiaAsia +06/+07 1991 Mar 31  2:00s
1849                         5:00 RussiaAsia +05/+06 1991 Aug 31  2:00
1850                         5:00    Kyrgyz  +05/+06 2005 Aug 12
1851                         6:00    -       +06
1852 
1853 ###############################################################################
1854 
1855 # Korea (North and South)
1856 
1857 # From Annie I. Bang (2006-07-10):
1858 # http://www.koreaherald.com/view.php?ud=200607100012
1859 # Korea ran a daylight saving program from 1949-61 but stopped it
1860 # during the 1950-53 Korean War.  The system was temporarily enforced
1861 # between 1987 and 1988 ...
1862 
1863 # From Sanghyuk Jung (2014-10-29):
1864 # http://mm.icann.org/pipermail/tz/2014-October/021830.html
1865 # According to the Korean Wikipedia
1866 # http://ko.wikipedia.org/wiki/한국_표준시
1867 # [oldid=12896437 2014-09-04 08:03 UTC]
1868 # DST in Republic of Korea was as follows....  And I checked old
1869 # newspapers in Korean, all articles correspond with data in Wikipedia.
1870 # For example, the article in 1948 (Korean Language) proved that DST
1871 # started at June 1 in that year.  For another example, the article in
1872 # 1988 said that DST started at 2:00 AM in that year.
1873 
1874 # Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
1875 Rule    ROK     1948    only    -       Jun      1      0:00    1:00    D
1876 Rule    ROK     1948    only    -       Sep     13      0:00    0       S
1877 Rule    ROK     1949    only    -       Apr      3      0:00    1:00    D
1878 Rule    ROK     1949    1951    -       Sep     Sun>=8       0:00    0       S
1879 Rule    ROK     1950    only    -       Apr      1      0:00    1:00    D
1880 Rule    ROK     1951    only    -       May      6      0:00    1:00    D
1881 Rule    ROK     1955    only    -       May      5      0:00    1:00    D
1882 Rule    ROK     1955    only    -       Sep      9      0:00    0       S
1883 Rule    ROK     1956    only    -       May     20      0:00    1:00    D
1884 Rule    ROK     1956    only    -       Sep     30      0:00    0       S
1885 Rule    ROK     1957    1960    -       May     Sun>=1       0:00    1:00    D
1886 Rule    ROK     1957    1960    -       Sep     Sun>=18      0:00    0       S
1887 Rule    ROK     1987    1988    -       May     Sun>=8       2:00    1:00    D
1888 Rule    ROK     1987    1988    -       Oct     Sun>=8       3:00    0       S
1889 
1890 # From Paul Eggert (2016-08-23):
1891 # The Korean Wikipedia entry gives the following sources for UT offsets:
1892 #
1893 # 1908: Official Journal Article No. 3994 (decree No. 5)
1894 # 1912: Governor-General of Korea Official Gazette Issue No. 367
1895 #       (Announcement No. 338)
1896 # 1954: Presidential Decree No. 876 (1954-03-17)
1897 # 1961: Law No. 676 (1961-08-07)

1898 #
1899 # (Another source "1987: Law No. 3919 (1986-12-31)" was in the 2014-10-30
1900 # edition of the Korean Wikipedia entry.)

1901 #
1902 # I guessed that time zone abbreviations through 1945 followed the same
1903 # rules as discussed under Taiwan, with nominal switches from JST to KST
1904 # when the respective cities were taken over by the Allies after WWII.
1905 #
1906 # For Pyongyang, guess no changes from World War II until 2015, as we
1907 # have no information otherwise.
1908 
1909 # From Steffen Thorsen (2015-08-07):
1910 # According to many news sources, North Korea is going to change to
1911 # the 8:30 time zone on August 15, one example:
1912 # http://www.bbc.com/news/world-asia-33815049
1913 #
1914 # From Paul Eggert (2015-08-15):
1915 # Bells rang out midnight (00:00) Friday as part of the celebrations.  See:
1916 # Talmadge E. North Korea celebrates new time zone, 'Pyongyang Time'
1917 # http://news.yahoo.com/north-korea-celebrates-time-zone-pyongyang-time-164038128.html
1918 # There is no common English-language abbreviation for this time zone.
1919 # Use KST, as that's what we already use for 1954-1961 in ROK.
1920 
1921 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
1922 Zone    Asia/Seoul      8:27:52 -       LMT     1908 Apr  1
1923                         8:30    -       KST     1912 Jan  1
1924                         9:00    -       JCST    1937 Oct  1
1925                         9:00    -       JST     1945 Sep  8
1926                         9:00    -       KST     1954 Mar 21
1927                         8:30    ROK     K%sT    1961 Aug 10


2047 # Provinces [at 8:00]: Khövsgöl, Bulgan, Arkhangai, Khentii, Töv,
2048 #       Bayankhongor, Övörkhangai, Dundgovi, Dornogovi, Ömnögovi
2049 # Provinces [at 9:00]: Dornod, Sükhbaatar
2050 #
2051 # [The province of Selenge is omitted from the above lists.]
2052 
2053 # From Ganbold Ts., Ulaanbaatar (2004-04-17):
2054 # Daylight saving occurs at 02:00 local time last Saturday of March.
2055 # It will change back to normal at 02:00 local time last Saturday of
2056 # September.... As I remember this rule was changed in 2001.
2057 #
2058 # From Paul Eggert (2004-04-17):
2059 # For now, assume Rives McDow's informant got confused about Friday vs
2060 # Saturday, and that his 2001 dates should have 1 added to them.
2061 
2062 # From Paul Eggert (2005-07-26):
2063 # We have wildly conflicting information about Mongolia's time zones.
2064 # Bill Bonnet (2005-05-19) reports that the US Embassy in Ulaanbaatar says
2065 # there is only one time zone and that DST is observed, citing Microsoft
2066 # Windows XP as the source.  Risto Nykänen (2005-05-16) reports that
2067 # travelmongolia.org says there are two time zones (UT +07, +08) with no DST.
2068 # Oscar van Vlijmen (2005-05-20) reports that the Mongolian Embassy in
2069 # Washington, DC says there are two time zones, with DST observed.
2070 # He also found
2071 # http://ubpost.mongolnews.mn/index.php?subaction=showcomments&id=1111634894&archive=&start_from=&ucat=1&
2072 # which also says that there is DST, and which has a comment by "Toddius"
2073 # (2005-03-31 06:05 +0700) saying "Mongolia actually has 3.5 time zones.
2074 # The West (OLGII) is +7 GMT, most of the country is ULAT is +8 GMT
2075 # and some Eastern provinces are +9 GMT but Sükhbaatar Aimag is SUHK +8.5 GMT.
2076 # The SUKH timezone is new this year, it is one of the few things the
2077 # parliament passed during the tumultuous winter session."
2078 # For now, let's ignore this information, until we have more confirmation.
2079 
2080 # From Ganbold Ts. (2007-02-26):
2081 # Parliament of Mongolia has just changed the daylight-saving rule in February.
2082 # They decided not to adopt daylight-saving time....
2083 # http://www.mongolnews.mn/index.php?module=unuudur&sec=view&id=15742
2084 
2085 # From Deborah Goldsmith (2008-03-30):
2086 # We received a bug report claiming that the tz database UTC offset for
2087 # Asia/Choibalsan (GMT+09:00) is incorrect, and that it should be GMT


2683 
2684 # Saudi Arabia
2685 #
2686 # From Paul Eggert (2014-07-15):
2687 # Time in Saudi Arabia and other countries in the Arabian peninsula was not
2688 # standardized until relatively recently; we don't know when, and possibly it
2689 # has never been made official.  Richard P Hunt, in "Islam city yielding to
2690 # modern times", New York Times (1961-04-09), p 20, wrote that only airlines
2691 # observed standard time, and that people in Jeddah mostly observed quasi-solar
2692 # time, doing so by setting their watches at sunrise to 6 o'clock (or to 12
2693 # o'clock for "Arab" time).
2694 #
2695 # The TZ database cannot represent quasi-solar time; airline time is the best
2696 # we can do.  The 1946 foreign air news digest of the U.S. Civil Aeronautics
2697 # Board (OCLC 42299995) reported that the "... Arabian Government, inaugurated
2698 # a weekly Dhahran-Cairo service, via the Saudi Arabian cities of Riyadh and
2699 # Jidda, on March 14, 1947".  Shanks & Pottenger guessed 1950; go with the
2700 # earlier date.
2701 #
2702 # Shanks & Pottenger also state that until 1968-05-01 Saudi Arabia had two
2703 # time zones; the other zone, at UT +04, was in the far eastern part of
2704 # the country.  Ignore this, as it's before our 1970 cutoff.
2705 #
2706 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2707 Zone    Asia/Riyadh     3:06:52 -       LMT     1947 Mar 14
2708                         3:00    -       AST
2709 Link Asia/Riyadh Asia/Aden      # Yemen
2710 Link Asia/Riyadh Asia/Kuwait
2711 
2712 # Singapore
2713 # taken from Mok Ly Yng (2003-10-30)
2714 # http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html
2715 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2716 Zone    Asia/Singapore  6:55:25 -       LMT     1901 Jan  1
2717                         6:55:25 -       SMT     1905 Jun  1 # Singapore M.T.
2718                         7:00    -       MALT    1933 Jan  1 # Malaya Time
2719                         7:00    0:20    MALST   1936 Jan  1
2720                         7:20    -       MALT    1941 Sep  1
2721                         7:30    -       MALT    1942 Feb 16
2722                         9:00    -       JST     1945 Sep 12
2723                         7:30    -       MALT    1965 Aug  9 # independence


2952 # http://www.timeanddate.com/news/time/syria-dst-2012.html
2953 
2954 # From Arthur David Olson (2012-03-27):
2955 # Assume last Friday in March going forward XXX.
2956 
2957 Rule    Syria   2008    only    -       Apr     Fri>=1       0:00    1:00    S
2958 Rule    Syria   2008    only    -       Nov     1       0:00    0       -
2959 Rule    Syria   2009    only    -       Mar     lastFri 0:00    1:00    S
2960 Rule    Syria   2010    2011    -       Apr     Fri>=1       0:00    1:00    S
2961 Rule    Syria   2012    max     -       Mar     lastFri 0:00    1:00    S
2962 Rule    Syria   2009    max     -       Oct     lastFri 0:00    0       -
2963 
2964 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2965 Zone    Asia/Damascus   2:25:12 -       LMT     1920 # Dimashq
2966                         2:00    Syria   EE%sT
2967 
2968 # Tajikistan
2969 # From Shanks & Pottenger.
2970 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2971 Zone    Asia/Dushanbe   4:35:12 -       LMT     1924 May  2
2972                         5:00    -       +05     1930 Jun 21
2973                         6:00 RussiaAsia +06/+07 1991 Mar 31  2:00s
2974                         5:00    1:00    +05/+06 1991 Sep  9  2:00s
2975                         5:00    -       +05
2976 
2977 # Thailand
2978 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2979 Zone    Asia/Bangkok    6:42:04 -       LMT     1880
2980                         6:42:04 -       BMT     1920 Apr # Bangkok Mean Time
2981                         7:00    -       ICT
2982 Link Asia/Bangkok Asia/Phnom_Penh       # Cambodia
2983 Link Asia/Bangkok Asia/Vientiane        # Laos
2984 
2985 # Turkmenistan
2986 # From Shanks & Pottenger.
2987 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2988 Zone    Asia/Ashgabat   3:53:32 -       LMT     1924 May  2 # or Ashkhabad
2989                         4:00    -       +04     1930 Jun 21
2990                         5:00 RussiaAsia +05/+06 1991 Mar 31  2:00
2991                         4:00 RussiaAsia +04/+05 1992 Jan 19  2:00
2992                         5:00    -       +05

2993 
2994 # United Arab Emirates
2995 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
2996 Zone    Asia/Dubai      3:41:12 -       LMT     1920
2997                         4:00    -       GST
2998 Link Asia/Dubai Asia/Muscat     # Oman
2999 
3000 # Uzbekistan
3001 # Byalokoz 1919 says Uzbekistan was 4:27:53.
3002 # Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
3003 Zone    Asia/Samarkand  4:27:53 -       LMT     1924 May  2
3004                         4:00    -       +04     1930 Jun 21
3005                         5:00    -       +05     1981 Apr  1
3006                         5:00    1:00    +06     1981 Oct  1
3007                         6:00    -       +06     1982 Apr  1
3008                         5:00 RussiaAsia +05/+06 1992
3009                         5:00    -       +05

3010 # Milne says Tashkent was 4:37:10.8; round to nearest.
3011 Zone    Asia/Tashkent   4:37:11 -       LMT     1924 May  2
3012                         5:00    -       +05     1930 Jun 21
3013                         6:00 RussiaAsia +06/+07 1991 Mar 31  2:00
3014                         5:00 RussiaAsia +05/+06 1992
3015                         5:00    -       +05

3016 
3017 # Vietnam
3018 
3019 # From Paul Eggert (2014-10-04):
3020 # Milne gives 7:16:56 for the meridian of Saigon in 1899, as being
3021 # used in Lower Laos, Cambodia, and Annam.  But this is quite a ways
3022 # from Saigon's location.  For now, ignore this and stick with Shanks
3023 # and Pottenger for LMT before 1906.
3024 
3025 # From Arthur David Olson (2008-03-18):
3026 # The English-language name of Vietnam's most populous city is "Ho Chi Minh
3027 # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters.
3028 
3029 # From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân:
3030 # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)"
3031 # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50,
3032 # is quoted verbatim in:
3033 # http://www.thoigian.com.vn/?mPage=P80D01
3034 # is translated by Brian Inglis in:
3035 # http://mm.icann.org/pipermail/tz/2014-October/021654.html


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