1 # 2 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 # 4 # This code is free software; you can redistribute it and/or modify it 5 # under the terms of the GNU General Public License version 2 only, as 6 # published by the Free Software Foundation. Oracle designates this 7 # particular file as subject to the "Classpath" exception as provided 8 # by Oracle in the LICENSE file that accompanied this code. 9 # 10 # This code is distributed in the hope that it will be useful, but WITHOUT 11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 # version 2 for more details (a copy is included in the LICENSE file that 14 # accompanied this code). 15 # 16 # You should have received a copy of the GNU General Public License version 17 # 2 along with this work; if not, write to the Free Software Foundation, 18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 # 20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 # or visit www.oracle.com if you need additional information or have any 22 # questions. 23 # 24 # This file is in the public domain, so clarified as of 25 # 2009-05-17 by Arthur David Olson. 26 27 # This file also includes Pacific islands. 28 29 # Notes are at the end of this file 30 31 ############################################################################### 32 33 # Australia 34 35 # Please see the notes below for the controversy about "EST" versus "AEST" etc. 36 37 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 38 Rule Aus 1917 only - Jan 1 0:01 1:00 D 39 Rule Aus 1917 only - Mar 25 2:00 0 S 40 Rule Aus 1942 only - Jan 1 2:00 1:00 D 41 Rule Aus 1942 only - Mar 29 2:00 0 S 42 Rule Aus 1942 only - Sep 27 2:00 1:00 D 43 Rule Aus 1943 1944 - Mar lastSun 2:00 0 S 44 Rule Aus 1943 only - Oct 3 2:00 1:00 D 45 # Go with Whitman and the Australian National Standards Commission, which 46 # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that 47 # 1944/1945 was just like 1943/1944. 48 49 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 50 # Northern Territory 51 Zone Australia/Darwin 8:43:20 - LMT 1895 Feb 52 9:00 - ACST 1899 May 53 9:30 Aus AC%sT 54 # Western Australia 55 # 56 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 57 Rule AW 1974 only - Oct lastSun 2:00s 1:00 D 58 Rule AW 1975 only - Mar Sun>=1 2:00s 0 S 59 Rule AW 1983 only - Oct lastSun 2:00s 1:00 D 60 Rule AW 1984 only - Mar Sun>=1 2:00s 0 S 61 Rule AW 1991 only - Nov 17 2:00s 1:00 D 62 Rule AW 1992 only - Mar Sun>=1 2:00s 0 S 63 Rule AW 2006 only - Dec 3 2:00s 1:00 D 64 Rule AW 2007 2009 - Mar lastSun 2:00s 0 S 65 Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 D 66 Zone Australia/Perth 7:43:24 - LMT 1895 Dec 67 8:00 Aus AW%sT 1943 Jul 68 8:00 AW AW%sT 69 Zone Australia/Eucla 8:35:28 - LMT 1895 Dec 70 8:45 Aus ACW%sT 1943 Jul 71 8:45 AW ACW%sT 72 73 # Queensland 74 # 75 # From Alex Livingston (1996-11-01): 76 # I have heard or read more than once that some resort islands off the coast 77 # of Queensland chose to keep observing daylight-saving time even after 78 # Queensland ceased to. 79 # 80 # From Paul Eggert (1996-11-22): 81 # IATA SSIM (1993-02/1994-09) say that the Holiday Islands (Hayman, Lindeman, 82 # Hamilton) observed DST for two years after the rest of Queensland stopped. 83 # Hamilton is the largest, but there is also a Hamilton in Victoria, 84 # so use Lindeman. 85 # 86 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 87 Rule AQ 1971 only - Oct lastSun 2:00s 1:00 D 88 Rule AQ 1972 only - Feb lastSun 2:00s 0 S 89 Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 D 90 Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 S 91 Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 D 92 Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 S 93 Zone Australia/Brisbane 10:12:08 - LMT 1895 94 10:00 Aus AE%sT 1971 95 10:00 AQ AE%sT 96 Zone Australia/Lindeman 9:55:56 - LMT 1895 97 10:00 Aus AE%sT 1971 98 10:00 AQ AE%sT 1992 Jul 99 10:00 Holiday AE%sT 100 101 # South Australia 102 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 103 Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 D 104 Rule AS 1986 only - Oct 19 2:00s 1:00 D 105 Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 D 106 Rule AS 1972 only - Feb 27 2:00s 0 S 107 Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 S 108 Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 S 109 Rule AS 1991 only - Mar 3 2:00s 0 S 110 Rule AS 1992 only - Mar 22 2:00s 0 S 111 Rule AS 1993 only - Mar 7 2:00s 0 S 112 Rule AS 1994 only - Mar 20 2:00s 0 S 113 Rule AS 1995 2005 - Mar lastSun 2:00s 0 S 114 Rule AS 2006 only - Apr 2 2:00s 0 S 115 Rule AS 2007 only - Mar lastSun 2:00s 0 S 116 Rule AS 2008 max - Apr Sun>=1 2:00s 0 S 117 Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D 118 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 119 Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb 120 9:00 - ACST 1899 May 121 9:30 Aus AC%sT 1971 122 9:30 AS AC%sT 123 124 # Tasmania 125 # 126 # From Paul Eggert (2005-08-16): 127 # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml 128 # says King Island didn't observe DST from WWII until late 1971. 129 # 130 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 131 Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 D 132 Rule AT 1968 only - Mar lastSun 2:00s 0 S 133 Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 D 134 Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 S 135 Rule AT 1972 only - Feb lastSun 2:00s 0 S 136 Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 S 137 Rule AT 1982 1983 - Mar lastSun 2:00s 0 S 138 Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 S 139 Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 D 140 Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 S 141 Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 D 142 Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 D 143 Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 D 144 Rule AT 1991 2005 - Mar lastSun 2:00s 0 S 145 Rule AT 2000 only - Aug lastSun 2:00s 1:00 D 146 Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D 147 Rule AT 2006 only - Apr Sun>=1 2:00s 0 S 148 Rule AT 2007 only - Mar lastSun 2:00s 0 S 149 Rule AT 2008 max - Apr Sun>=1 2:00s 0 S 150 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 151 Zone Australia/Hobart 9:49:16 - LMT 1895 Sep 152 10:00 - AEST 1916 Oct 1 2:00 153 10:00 1:00 AEDT 1917 Feb 154 10:00 Aus AE%sT 1967 155 10:00 AT AE%sT 156 Zone Australia/Currie 9:35:28 - LMT 1895 Sep 157 10:00 - AEST 1916 Oct 1 2:00 158 10:00 1:00 AEDT 1917 Feb 159 10:00 Aus AE%sT 1971 Jul 160 10:00 AT AE%sT 161 162 # Victoria 163 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 164 Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 D 165 Rule AV 1972 only - Feb lastSun 2:00s 0 S 166 Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 S 167 Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 S 168 Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 D 169 Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 D 170 Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 S 171 Rule AV 1995 2005 - Mar lastSun 2:00s 0 S 172 Rule AV 2000 only - Aug lastSun 2:00s 1:00 D 173 Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 D 174 Rule AV 2006 only - Apr Sun>=1 2:00s 0 S 175 Rule AV 2007 only - Mar lastSun 2:00s 0 S 176 Rule AV 2008 max - Apr Sun>=1 2:00s 0 S 177 Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D 178 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 179 Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb 180 10:00 Aus AE%sT 1971 181 10:00 AV AE%sT 182 183 # New South Wales 184 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 185 Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 D 186 Rule AN 1972 only - Feb 27 2:00s 0 S 187 Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 S 188 Rule AN 1982 only - Apr Sun>=1 2:00s 0 S 189 Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 S 190 Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 S 191 Rule AN 1986 only - Oct 19 2:00s 1:00 D 192 Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 D 193 Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 S 194 Rule AN 1996 2005 - Mar lastSun 2:00s 0 S 195 Rule AN 2000 only - Aug lastSun 2:00s 1:00 D 196 Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 D 197 Rule AN 2006 only - Apr Sun>=1 2:00s 0 S 198 Rule AN 2007 only - Mar lastSun 2:00s 0 S 199 Rule AN 2008 max - Apr Sun>=1 2:00s 0 S 200 Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D 201 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 202 Zone Australia/Sydney 10:04:52 - LMT 1895 Feb 203 10:00 Aus AE%sT 1971 204 10:00 AN AE%sT 205 Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb 206 10:00 - AEST 1896 Aug 23 207 9:00 - ACST 1899 May 208 9:30 Aus AC%sT 1971 209 9:30 AN AC%sT 2000 210 9:30 AS AC%sT 211 212 # Lord Howe Island 213 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 214 Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D 215 Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S 216 Rule LH 1985 only - Oct lastSun 2:00 0:30 D 217 Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S 218 Rule LH 1986 only - Oct 19 2:00 0:30 D 219 Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D 220 Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S 221 Rule LH 1996 2005 - Mar lastSun 2:00 0 S 222 Rule LH 2000 only - Aug lastSun 2:00 0:30 D 223 Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D 224 Rule LH 2006 only - Apr Sun>=1 2:00 0 S 225 Rule LH 2007 only - Mar lastSun 2:00 0 S 226 Rule LH 2008 max - Apr Sun>=1 2:00 0 S 227 Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D 228 Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb 229 10:00 - AEST 1981 Mar 230 10:30 LH LH%sT 231 232 # Australian miscellany 233 # 234 # Ashmore Is, Cartier 235 # no indigenous inhabitants; only seasonal caretakers 236 # no times are set 237 # 238 # Coral Sea Is 239 # no indigenous inhabitants; only meteorologists 240 # no times are set 241 # 242 # Macquarie 243 # Permanent occupation (scientific station) 1911-1915 and since 25 March 1948; 244 # sealing and penguin oil station operated Nov 1899 to Apr 1919. See the 245 # Tasmania Parks & Wildlife Service history of sealing at Macquarie Island 246 # http://www.parks.tas.gov.au/index.aspx?base=1828 247 # http://www.parks.tas.gov.au/index.aspx?base=1831 248 # Guess that it was like Australia/Hobart while inhabited before 2010. 249 # 250 # From Steffen Thorsen (2010-03-10): 251 # We got these changes from the Australian Antarctic Division: 252 # - Macquarie Island will stay on UTC+11 for winter and therefore not 253 # switch back from daylight savings time when other parts of Australia do 254 # on 4 April. 255 # 256 # From Arthur David Olson (2013-05-23): 257 # The 1919 transition is overspecified below so pre-2013 zics 258 # will produce a binary file with an [A]EST-type as the first 32-bit type; 259 # this is required for correct handling of times before 1916 by 260 # pre-2013 versions of localtime. 261 Zone Antarctica/Macquarie 0 - zzz 1899 Nov 262 10:00 - AEST 1916 Oct 1 2:00 263 10:00 1:00 AEDT 1917 Feb 264 10:00 Aus AE%sT 1919 Apr 1 0:00s 265 0 - zzz 1948 Mar 25 266 10:00 Aus AE%sT 1967 267 10:00 AT AE%sT 2010 Apr 4 3:00 268 11:00 - MIST # Macquarie I Standard Time 269 270 # Christmas 271 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 272 Zone Indian/Christmas 7:02:52 - LMT 1895 Feb 273 7:00 - CXT # Christmas Island Time 274 275 # Cocos (Keeling) Is 276 # These islands were ruled by the Ross family from about 1830 to 1978. 277 # We don't know when standard time was introduced; for now, we guess 1900. 278 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 279 Zone Indian/Cocos 6:27:40 - LMT 1900 280 6:30 - CCT # Cocos Islands Time 281 282 283 # Fiji 284 285 # Milne gives 11:55:44 for Suva. 286 287 # From Alexander Krivenyshev (2009-11-10): 288 # According to Fiji Broadcasting Corporation, Fiji plans to re-introduce DST 289 # from November 29th 2009 to April 25th 2010. 290 # 291 # "Daylight savings to commence this month" 292 # http://www.radiofiji.com.fj/fullstory.php?id=23719 293 # http://www.worldtimezone.com/dst_news/dst_news_fiji01.html 294 295 # From Steffen Thorsen (2009-11-10): 296 # The Fiji Government has posted some more details about the approved 297 # amendments: 298 # http://www.fiji.gov.fj/publish/page_16198.shtml 299 300 # From Steffen Thorsen (2010-03-03): 301 # The Cabinet in Fiji has decided to end DST about a month early, on 302 # 2010-03-28 at 03:00. 303 # The plan is to observe DST again, from 2010-10-24 to sometime in March 304 # 2011 (last Sunday a good guess?). 305 # 306 # Official source: 307 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=1096:3310-cabinet-approves-change-in-daylight-savings-dates&catid=49:cabinet-releases&Itemid=166 308 # 309 # A bit more background info here: 310 # http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html 311 312 # From Alexander Krivenyshev (2010-10-24): 313 # According to Radio Fiji and Fiji Times online, Fiji will end DST 3 314 # weeks earlier than expected - on March 6, 2011, not March 27, 2011... 315 # Here is confirmation from Government of the Republic of the Fiji Islands, 316 # Ministry of Information (fiji.gov.fj) web site: 317 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155 318 # http://www.worldtimezone.com/dst_news/dst_news_fiji04.html 319 320 # From Steffen Thorsen (2011-10-03): 321 # Now the dates have been confirmed, and at least our start date 322 # assumption was correct (end date was one week wrong). 323 # 324 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=4966:daylight-saving-starts-in-fiji&catid=71:press-releases&Itemid=155 325 # which says 326 # Members of the public are reminded to change their time to one hour in 327 # advance at 2am to 3am on October 23, 2011 and one hour back at 3am to 328 # 2am on February 26 next year. 329 330 # From Ken Rylander (2011-10-24) 331 # Another change to the Fiji DST end date. In the TZ database the end date for 332 # Fiji DST 2012, is currently Feb 26. This has been changed to Jan 22. 333 # 334 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155 335 # states: 336 # 337 # The end of daylight saving scheduled initially for the 26th of February 2012 338 # has been brought forward to the 22nd of January 2012. 339 # The commencement of daylight saving will remain unchanged and start 340 # on the 23rd of October, 2011. 341 342 # From the Fiji Government Online Portal (2012-08-21) via Steffen Thorsen: 343 # The Minister for Labour, Industrial Relations and Employment Mr Jone Usamate 344 # today confirmed that Fiji will start daylight savings at 2 am on Sunday 21st 345 # October 2012 and end at 3 am on Sunday 20th January 2013. 346 # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=6702&catid=71&Itemid=155 347 348 # From the Fijian Government Media Center (2013-08-30) via David Wheeler: 349 # Fiji will start daylight savings on Sunday 27th October, 2013 ... 350 # move clocks forward by one hour from 2am 351 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-27th-OCTOBER-201.aspx 352 353 # From Steffen Thorsen (2013-01-10): 354 # Fiji will end DST on 2014-01-19 02:00: 355 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx 356 357 # From Ken Rylander (2014-10-20): 358 # DST will start Nov. 2 this year. 359 # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-NOVEMBER-2ND.aspx 360 361 # From a government order dated 2015-08-26 and published as Legal Notice No. 77 362 # in the Government of Fiji Gazette Supplement No. 24 (2015-08-28), 363 # via Ken Rylander (2015-09-02): 364 # the daylight saving period is 1 hour in advance of the standard time 365 # commencing at 2.00 am on Sunday 1st November, 2015 and ending at 366 # 3.00 am on Sunday 17th January, 2016. 367 368 # From Paul Eggert (2015-09-01): 369 # For now, guess DST from 02:00 the first Sunday in November to 370 # 03:00 the third Sunday in January. Although ad hoc, it matches 371 # transitions since late 2014 and seems more likely to match future 372 # practice than guessing no DST. 373 374 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 375 Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S 376 Rule Fiji 1999 2000 - Feb lastSun 3:00 0 - 377 Rule Fiji 2009 only - Nov 29 2:00 1:00 S 378 Rule Fiji 2010 only - Mar lastSun 3:00 0 - 379 Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 S 380 Rule Fiji 2011 only - Mar Sun>=1 3:00 0 - 381 Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 - 382 Rule Fiji 2014 only - Jan Sun>=18 2:00 0 - 383 Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S 384 Rule Fiji 2015 max - Jan Sun>=15 3:00 0 - 385 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 386 Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva 387 12:00 Fiji FJ%sT # Fiji Time 388 389 # French Polynesia 390 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 391 Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea 392 -9:00 - GAMT # Gambier Time 393 Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct 394 -9:30 - MART # Marquesas Time 395 Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete 396 -10:00 - TAHT # Tahiti Time 397 # Clipperton (near North America) is administered from French Polynesia; 398 # it is uninhabited. 399 400 # Guam 401 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 402 Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 403 9:39:00 - LMT 1901 # Agana 404 10:00 - GST 2000 Dec 23 # Guam 405 10:00 - ChST # Chamorro Standard Time 406 Link Pacific/Guam Pacific/Saipan # N Mariana Is 407 408 # Kiribati 409 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 410 Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki 411 12:00 - GILT # Gilbert Is Time 412 Zone Pacific/Enderbury -11:24:20 - LMT 1901 413 -12:00 - PHOT 1979 Oct # Phoenix Is Time 414 -11:00 - PHOT 1995 415 13:00 - PHOT 416 Zone Pacific/Kiritimati -10:29:20 - LMT 1901 417 -10:40 - LINT 1979 Oct # Line Is Time 418 -10:00 - LINT 1995 419 14:00 - LINT 420 421 # N Mariana Is 422 # See Pacific/Guam. 423 424 # Marshall Is 425 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 426 Zone Pacific/Majuro 11:24:48 - LMT 1901 427 11:00 - MHT 1969 Oct # Marshall Islands Time 428 12:00 - MHT 429 Zone Pacific/Kwajalein 11:09:20 - LMT 1901 430 11:00 - MHT 1969 Oct 431 -12:00 - KWAT 1993 Aug 20 # Kwajalein Time 432 12:00 - MHT 433 434 # Micronesia 435 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 436 Zone Pacific/Chuuk 10:07:08 - LMT 1901 437 10:00 - CHUT # Chuuk Time 438 Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia 439 11:00 - PONT # Pohnpei Time 440 Zone Pacific/Kosrae 10:51:56 - LMT 1901 441 11:00 - KOST 1969 Oct # Kosrae Time 442 12:00 - KOST 1999 443 11:00 - KOST 444 445 # Nauru 446 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 447 Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe 448 11:30 - NRT 1942 Mar 15 # Nauru Time 449 9:00 - JST 1944 Aug 15 450 11:30 - NRT 1979 May 451 12:00 - NRT 452 453 # New Caledonia 454 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 455 Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S 456 Rule NC 1978 1979 - Feb 27 0:00 0 - 457 Rule NC 1996 only - Dec 1 2:00s 1:00 S 458 # Shanks & Pottenger say the following was at 2:00; go with IATA. 459 Rule NC 1997 only - Mar 2 2:00s 0 - 460 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 461 Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa 462 11:00 NC NC%sT 463 464 465 ############################################################################### 466 467 # New Zealand 468 469 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 470 Rule NZ 1927 only - Nov 6 2:00 1:00 S 471 Rule NZ 1928 only - Mar 4 2:00 0 M 472 Rule NZ 1928 1933 - Oct Sun>=8 2:00 0:30 S 473 Rule NZ 1929 1933 - Mar Sun>=15 2:00 0 M 474 Rule NZ 1934 1940 - Apr lastSun 2:00 0 M 475 Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S 476 Rule NZ 1946 only - Jan 1 0:00 0 S 477 # Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no 478 # convenient single notation for the date and time of this transition 479 # so we must duplicate the Rule lines. 480 Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D 481 Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D 482 Rule NZ 1975 only - Feb lastSun 2:00s 0 S 483 Rule Chatham 1975 only - Feb lastSun 2:45s 0 S 484 Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D 485 Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D 486 Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S 487 Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S 488 Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D 489 Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D 490 Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D 491 Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D 492 Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S 493 Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S 494 Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D 495 Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D 496 Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S 497 Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S 498 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 499 Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 500 11:30 NZ NZ%sT 1946 Jan 1 501 12:00 NZ NZ%sT 502 Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2 503 12:15 - CHAST 1946 Jan 1 504 12:45 Chatham CHA%sT 505 506 Link Pacific/Auckland Antarctica/McMurdo 507 508 # Auckland Is 509 # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers, 510 # and scientific personnel have wintered 511 512 # Campbell I 513 # minor whaling stations operated 1909/1914 514 # scientific station operated 1941/1995; 515 # previously whalers, sealers, pastoralists, and scientific personnel wintered 516 # was probably like Pacific/Auckland 517 518 # Cook Is 519 # From Shanks & Pottenger: 520 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 521 Rule Cook 1978 only - Nov 12 0:00 0:30 HS 522 Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 - 523 Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS 524 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 525 Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua 526 -10:30 - CKT 1978 Nov 12 # Cook Is Time 527 -10:00 Cook CK%sT 528 529 ############################################################################### 530 531 532 # Niue 533 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 534 Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi 535 -11:20 - NUT 1951 # Niue Time 536 -11:30 - NUT 1978 Oct 1 537 -11:00 - NUT 538 539 # Norfolk 540 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 541 Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 542 11:12 - NMT 1951 # Norfolk Mean Time 543 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T. 544 11:30 1:00 NFST 1975 Mar 2 02:00 545 11:30 - NFT 2015 Oct 4 02:00 546 11:00 - NFT 547 548 # Palau (Belau) 549 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 550 Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror 551 9:00 - PWT # Palau Time 552 553 # Papua New Guinea 554 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 555 Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 556 9:48:32 - PMMT 1895 # Port Moresby Mean Time 557 10:00 - PGT # Papua New Guinea Time 558 # 559 # From Paul Eggert (2014-10-13): 560 # Base the Bougainville entry on the Arawa-Kieta region, which appears to have 561 # the most people even though it was devastated in the Bougainville Civil War. 562 # 563 # Although Shanks gives 1942-03-15 / 1943-11-01 for JST, these dates 564 # are apparently rough guesswork from the starts of military campaigns. 565 # The World War II entries below are instead based on Arawa-Kieta. 566 # The Japanese occupied Kieta in July 1942, 567 # according to the Pacific War Online Encyclopedia 568 # http://pwencycl.kgbudge.com/B/o/Bougainville.htm 569 # and seem to have controlled it until their 1945-08-21 surrender. 570 # 571 # The Autonomous Region of Bougainville plans to switch from UTC+10 to UTC+11 572 # on 2014-12-28 at 02:00. They call UTC+11 "Bougainville Standard Time"; 573 # abbreviate this as BST. See: 574 # http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/ 575 # 576 Zone Pacific/Bougainville 10:22:16 - LMT 1880 577 9:48:32 - PMMT 1895 578 10:00 - PGT 1942 Jul 579 9:00 - JST 1945 Aug 21 580 10:00 - PGT 2014 Dec 28 2:00 581 11:00 - BST 582 583 # Pitcairn 584 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 585 Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown 586 -8:30 - PNT 1998 Apr 27 0:00 587 -8:00 - PST # Pitcairn Standard Time 588 589 # American Samoa 590 Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5 591 -11:22:48 - LMT 1911 592 -11:00 - NST 1967 Apr # N=Nome 593 -11:00 - BST 1983 Nov 30 # B=Bering 594 -11:00 - SST # S=Samoa 595 Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands 596 597 # Samoa (formerly and also known as Western Samoa) 598 599 # From Steffen Thorsen (2009-10-16): 600 # We have been in contact with the government of Samoa again, and received 601 # the following info: 602 # 603 # "Cabinet has now approved Daylight Saving to be effected next year 604 # commencing from the last Sunday of September 2010 and conclude first 605 # Sunday of April 2011." 606 # 607 # Background info: 608 # http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html 609 # 610 # Samoa's Daylight Saving Time Act 2009 is available here, but does not 611 # contain any dates: 612 # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf 613 614 # From Laupue Raymond Hughes (2010-10-07): 615 # Please see 616 # http://www.mcil.gov.ws 617 # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday 618 # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight 619 # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks 620 # backwards from 1:00am to 12:00am" 621 622 # From Laupue Raymond Hughes (2011-03-07): 623 # [http://www.mcil.gov.ws/ftcd/daylight_saving_2011.pdf] 624 # 625 # ... when the standard time strikes the hour of four o'clock (4.00am 626 # or 0400 Hours) on the 2nd April 2011, then all instruments used to 627 # measure standard time are to be adjusted/changed to three o'clock 628 # (3:00am or 0300Hrs). 629 630 # From David Zülke (2011-05-09): 631 # Subject: Samoa to move timezone from east to west of international date line 632 # 633 # http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963 634 635 # From Paul Eggert (2014-06-27): 636 # The International Date Line Act 2011 637 # http://www.parliament.gov.ws/images/ACTS/International_Date_Line_Act__2011_-_Eng.pdf 638 # changed Samoa from UTC-11 to UTC+13, effective "12 o'clock midnight, on 639 # Thursday 29th December 2011". The International Date Line was adjusted 640 # accordingly. 641 642 # From Laupue Raymond Hughes (2011-09-02): 643 # http://www.mcil.gov.ws/mcil_publications.html 644 # 645 # here is the official website publication for Samoa DST and dateline change 646 # 647 # DST 648 # Year End Time Start Time 649 # 2011 - - - - - - 24 September 3:00am to 4:00am 650 # 2012 01 April 4:00am to 3:00am - - - - - - 651 # 652 # Dateline Change skip Friday 30th Dec 2011 653 # Thursday 29th December 2011 23:59:59 Hours 654 # Saturday 31st December 2011 00:00:00 Hours 655 # 656 # From Nicholas Pereira (2012-09-10): 657 # Daylight Saving Time commences on Sunday 30th September 2012 and 658 # ends on Sunday 7th of April 2013.... 659 # http://www.mcil.gov.ws/mcil_publications.html 660 # 661 # From Paul Eggert (2014-07-08): 662 # That web page currently lists transitions for 2012/3 and 2013/4. 663 # Assume the pattern instituted in 2012 will continue indefinitely. 664 665 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 666 Rule WS 2010 only - Sep lastSun 0:00 1 D 667 Rule WS 2011 only - Apr Sat>=1 4:00 0 S 668 Rule WS 2011 only - Sep lastSat 3:00 1 D 669 Rule WS 2012 max - Apr Sun>=1 4:00 0 S 670 Rule WS 2012 max - Sep lastSun 3:00 1 D 671 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 672 Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 673 -11:26:56 - LMT 1911 674 -11:30 - WSST 1950 675 -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa 676 13:00 WS WS%sT 677 678 # Solomon Is 679 # excludes Bougainville, for which see Papua New Guinea 680 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 681 Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara 682 11:00 - SBT # Solomon Is Time 683 684 # Tokelau Is 685 # 686 # From Gwillim Law (2011-12-29) 687 # A correspondent informed me that Tokelau, like Samoa, will be skipping 688 # December 31 this year ... 689 # 690 # From Steffen Thorsen (2012-07-25) 691 # ... we double checked by calling hotels and offices based in Tokelau asking 692 # about the time there, and they all told a time that agrees with UTC+13.... 693 # Shanks says UTC-10 from 1901 [but] ... there is a good chance the change 694 # actually was to UTC-11 back then. 695 # 696 # From Paul Eggert (2012-07-25) 697 # A Google Books snippet of Appendix to the Journals of the House of 698 # Representatives of New Zealand, Session 1948, 699 # <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau 700 # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger 701 # are off by an hour starting in 1901. 702 703 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 704 Zone Pacific/Fakaofo -11:24:56 - LMT 1901 705 -11:00 - TKT 2011 Dec 30 # Tokelau Time 706 13:00 - TKT 707 708 # Tonga 709 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 710 Rule Tonga 1999 only - Oct 7 2:00s 1:00 S 711 Rule Tonga 2000 only - Mar 19 2:00s 0 - 712 Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S 713 Rule Tonga 2001 2002 - Jan lastSun 2:00 0 - 714 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 715 Zone Pacific/Tongatapu 12:19:20 - LMT 1901 716 12:20 - TOT 1941 # Tonga Time 717 13:00 - TOT 1999 718 13:00 Tonga TO%sT 719 720 # Tuvalu 721 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 722 Zone Pacific/Funafuti 11:56:52 - LMT 1901 723 12:00 - TVT # Tuvalu Time 724 725 726 # US minor outlying islands 727 728 # Howland, Baker 729 # Howland was mined for guano by American companies 1857-1878 and British 730 # 1886-1891; Baker was similar but exact dates are not known. 731 # Inhabited by civilians 1935-1942; U.S. military bases 1943-1944; 732 # uninhabited thereafter. 733 # Howland observed Hawaii Standard Time (UT-10:30) in 1937; 734 # see page 206 of Elgen M. Long and Marie K. Long, 735 # Amelia Earhart: the Mystery Solved, Simon & Schuster (2000). 736 # So most likely Howland and Baker observed Hawaii Time from 1935 737 # until they were abandoned after the war. 738 739 # Jarvis 740 # Mined for guano by American companies 1857-1879 and British 1883?-1891?. 741 # Inhabited by civilians 1935-1942; IGY scientific base 1957-1958; 742 # uninhabited thereafter. 743 # no information; was probably like Pacific/Kiritimati 744 745 # Johnston 746 # 747 # From Paul Eggert (2014-03-11): 748 # Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind. 749 # Details are uncertain. We have no data for Johnston after 1970, so 750 # treat it like Hawaii for now. 751 # 752 # In his memoirs of June 6th to October 4, 1945 753 # <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes, 754 # "We started our letdown to Kwajalein Atoll and landed there at 5:00 AM 755 # Johnston time, 1:30 AM Kwajalein time." This was in June 1945, and 756 # confirms that Johnston kept the same time as Honolulu in summer 1945. 757 # 758 # From Lyle McElhaney (2014-03-11): 759 # [W]hen JI was being used for that [atomic bomb] testing, the time being used 760 # was not Hawaiian time but rather the same time being used on the ships, 761 # which had a GMT offset of -11 hours. This apparently applied to at least the 762 # time from Operation Newsreel (Hardtack I/Teak shot, 1958-08-01) to the last 763 # Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin, 764 # "The United States High-Altitude Test Experience: A Review Emphasizing the 765 # Impact on the Environment", Los Alamos LA-6405, Oct 1976. 766 # http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf 767 # See the table on page 4 where he lists GMT and local times for the tests; a 768 # footnote for the JI tests reads that local time is "JI time = Hawaii Time 769 # Minus One Hour". 770 # 771 # See 'northamerica' for Pacific/Johnston. 772 773 # Kingman 774 # uninhabited 775 776 # Midway 777 # See Pacific/Pago_Pago. 778 779 # Palmyra 780 # uninhabited since World War II; was probably like Pacific/Kiritimati 781 782 # Wake 783 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 784 Zone Pacific/Wake 11:06:28 - LMT 1901 785 12:00 - WAKT # Wake Time 786 787 788 # Vanuatu 789 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 790 Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S 791 Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 - 792 Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S 793 Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S 794 Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 - 795 Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S 796 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 797 Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila 798 11:00 Vanuatu VU%sT # Vanuatu Time 799 800 # Wallis and Futuna 801 # Zone NAME GMTOFF RULES FORMAT [UNTIL] 802 Zone Pacific/Wallis 12:15:20 - LMT 1901 803 12:00 - WFT # Wallis & Futuna Time 804 805 ############################################################################### 806 807 # NOTES 808 809 # This file is by no means authoritative; if you think you know better, 810 # go ahead and edit the file (and please send any changes to 811 # tz@iana.org for general use in the future). For more, please see 812 # the file CONTRIBUTING in the tz distribution. 813 814 # From Paul Eggert (2014-10-31): 815 # 816 # Unless otherwise specified, the source for data through 1990 is: 817 # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), 818 # San Diego: ACS Publications, Inc. (2003). 819 # Unfortunately this book contains many errors and cites no sources. 820 # 821 # Gwillim Law writes that a good source 822 # for recent time zone data is the International Air Transport 823 # Association's Standard Schedules Information Manual (IATA SSIM), 824 # published semiannually. Law sent in several helpful summaries 825 # of the IATA's data after 1990. Except where otherwise noted, 826 # IATA SSIM is the source for entries after 1990. 827 # 828 # Another source occasionally used is Edward W. Whitman, World Time Differences, 829 # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which 830 # I found in the UCLA library. 831 # 832 # For data circa 1899, a common source is: 833 # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94. 834 # http://www.jstor.org/stable/1774359 835 # 836 # A reliable and entertaining source about time zones is 837 # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). 838 # 839 # I invented the abbreviations marked '*' in the following table; 840 # the rest are from earlier versions of this file, or from other sources. 841 # Corrections are welcome! 842 # std dst 843 # LMT Local Mean Time 844 # 8:00 AWST AWDT Western Australia 845 # 8:45 ACWST ACWDT Central Western Australia* 846 # 9:00 JST Japan 847 # 9:30 ACST ACDT Central Australia 848 # 10:00 AEST AEDT Eastern Australia 849 # 10:00 ChST Chamorro 850 # 10:30 LHST LHDT Lord Howe* 851 # 11:00 BST Bougainville* 852 # 11:30 NZMT NZST New Zealand through 1945 853 # 12:00 NZST NZDT New Zealand 1946-present 854 # 12:15 CHAST Chatham through 1945* 855 # 12:45 CHAST CHADT Chatham 1946-present* 856 # 13:00 WSST WSDT (western) Samoa 2011-present* 857 # -11:30 WSST Western Samoa through 1950* 858 # -11:00 SST Samoa 859 # -10:00 HST Hawaii 860 # - 8:00 PST Pitcairn* 861 # 862 # See the 'northamerica' file for Hawaii. 863 # See the 'southamerica' file for Easter I and the Galápagos Is. 864 865 ############################################################################### 866 867 # Australia 868 869 # From Paul Eggert (2014-06-30): 870 # Daylight saving time has long been controversial in Australia, pitting 871 # region against region, rural against urban, and local against global. 872 # For example, in her review of Graeme Davison's _The Unforgiving 873 # Minute: how Australians learned to tell the time_ (1993), Perth native 874 # Phillipa J Martyr wrote, "The section entitled 'Saving Daylight' was 875 # very informative, but was (as can, sadly, only be expected from a 876 # Melbourne-based study) replete with the usual chuckleheaded 877 # Queenslanders and straw-chewing yokels from the West prattling fables 878 # about fading curtains and crazed farm animals." 879 # Electronic Journal of Australian and New Zealand History (1997-03-03) 880 # http://www.jcu.edu.au/aff/history/reviews/davison.htm 881 882 # From Paul Eggert (2005-12-08): 883 # Implementation Dates of Daylight Saving Time within Australia 884 # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml 885 # summarizes daylight saving issues in Australia. 886 887 # From Arthur David Olson (2005-12-12): 888 # Lawlink NSW:Daylight Saving in New South Wales 889 # http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/community_relations_daylight_saving 890 # covers New South Wales in particular. 891 892 # From John Mackin (1991-03-06): 893 # We in Australia have _never_ referred to DST as 'daylight' time. 894 # It is called 'summer' time. Now by a happy coincidence, 'summer' 895 # and 'standard' happen to start with the same letter; hence, the 896 # abbreviation does _not_ change... 897 # The legislation does not actually define abbreviations, at least 898 # in this State, but the abbreviation is just commonly taken to be the 899 # initials of the phrase, and the legislation here uniformly uses 900 # the phrase 'summer time' and does not use the phrase 'daylight 901 # time'. 902 # Announcers on the Commonwealth radio network, the ABC (for Australian 903 # Broadcasting Commission), use the phrases 'Eastern Standard Time' 904 # or 'Eastern Summer Time'. (Note, though, that as I say in the 905 # current australasia file, there is really no such thing.) Announcers 906 # on its overseas service, Radio Australia, use the same phrases 907 # prefixed by the word 'Australian' when referring to local times; 908 # time announcements on that service, naturally enough, are made in UTC. 909 910 # From Paul Eggert (2014-06-30): 911 # 912 # Inspired by Mackin's remarks quoted above, earlier versions of this 913 # file used "EST" for both Eastern Standard Time and Eastern Summer 914 # Time in Australia, and similarly for "CST", "CWST", and "WST". 915 # However, these abbreviations were confusing and were not common 916 # practice among Australians, and there were justifiable complaints 917 # about them, so I attempted to survey current Australian usage. 918 # For the tz database, the full English phrase is not that important; 919 # what matters is the abbreviation. It's difficult to survey the web 920 # directly for abbreviation usage, as there are so many false hits for 921 # strings like "EST" and "EDT", so I looked for pages that defined an 922 # abbreviation for eastern or central DST in Australia, and got the 923 # following numbers of unique hits for the listed Google queries: 924 # 925 # 10 "Eastern Daylight Time AEST" site:au [some are false hits] 926 # 10 "Eastern Summer Time AEST" site:au 927 # 10 "Summer Time AEDT" site:au 928 # 13 "EDST Eastern Daylight Saving Time" site:au 929 # 18 "Summer Time ESST" site:au 930 # 28 "Eastern Daylight Saving Time EDST" site:au 931 # 39 "EDT Eastern Daylight Time" site:au [some are false hits] 932 # 53 "Eastern Daylight Time EDT" site:au [some are false hits] 933 # 54 "AEDT Australian Eastern Daylight Time" site:au 934 # 182 "Eastern Daylight Time AEDT" site:au 935 # 936 # 17 "Central Daylight Time CDT" site:au [some are false hits] 937 # 46 "Central Daylight Time ACDT" site:au 938 # 939 # I tried several other variants (e.g., "Eastern Summer Time EST") but 940 # they all returned fewer than 10 unique hits. I also looked for pages 941 # mentioning both "western standard time" and an abbreviation, since 942 # there is no WST in the US to generate false hits, and found: 943 # 944 # 156 "western standard time" AWST site:au 945 # 226 "western standard time" WST site:au 946 # 947 # I then surveyed the top ten newspapers in Australia by circulation as 948 # listed in Wikipedia, using Google queries like "AEDT site:heraldsun.com.au" 949 # and obtaining estimated counts from the initial page of search results. 950 # All ten papers greatly preferred "AEDT" to "EDT". The papers 951 # surveyed were the Herald Sun, The Daily Telegraph, The Courier-Mail, 952 # The Sydney Morning Herald, The West Australian, The Age, The Advertiser, 953 # The Australian, The Financial Review, and The Herald (Newcastle). 954 # 955 # I also searched for historical usage, to see whether abbreviations 956 # like "AEDT" are new. A Trove search <http://trove.nla.gov.au/> 957 # found only one newspaper (The Canberra Times) with a house style 958 # dating back to the 1970s, I expect because other newspapers weren't 959 # fully indexed. The Canberra Times strongly preferred abbreviations 960 # like "AEDT". The first occurrence of "AEDT" was a World Weather 961 # column (1971-11-17, page 24), and of "ACDT" was a Scoreboard column 962 # (1993-01-24, p 16). The style was the typical usage but was not 963 # strictly enforced; for example, "Welcome to the twilight zones ..." 964 # (1994-10-29, p 1) uses the abbreviations AEST/AEDT, CST/CDT, and 965 # WST, and goes on to say, "The confusion and frustration some feel 966 # about the lack of uniformity among Australia's six states and two 967 # territories has prompted one group to form its very own political 968 # party -- the Sydney-based Daylight Saving Extension Party." 969 # 970 # I also surveyed federal government sources. They did not agree: 971 # 972 # The Australian Government (2014-03-26) 973 # http://australia.gov.au/about-australia/our-country/time 974 # (This document was produced by the Department of Finance.) 975 # AEST ACST AWST AEDT ACDT 976 # 977 # Bureau of Meteorology (2012-11-08) 978 # http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml 979 # EST CST WST EDT CDT 980 # 981 # Civil Aviation Safety Authority (undated) 982 # http://services.casa.gov.au/outnback/inc/pages/episode3/episode-3_time_zones.shtml 983 # EST CST WST (no abbreviations given for DST) 984 # 985 # Geoscience Australia (2011-11-24) 986 # http://www.ga.gov.au/geodesy/astro/sunrise.jsp 987 # AEST ACST AWST AEDT ACDT 988 # 989 # Parliamentary Library (2008-11-10) 990 # http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf 991 # EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used 992 # 993 # The Transport Safety Bureau has an extensive series of accident reports, 994 # and investigators seem to use whatever abbreviation they like. 995 # Googling site:atsb.gov.au found the following number of unique hits: 996 # 311 "ESuT", 195 "EDT", 26 "AEDT", 83 "CSuT", 46 "CDT". 997 # "_SuT" tended to appear in older reports, and "A_DT" tended to 998 # appear in reports of events with international implications. 999 # 1000 # From the above it appears that there is a working consensus in 1001 # Australia to use trailing "DT" for daylight saving time; although 1002 # some sources use trailing "SST" or "ST" or "SuT" they are by far in 1003 # the minority. The case for leading "A" is weaker, but since it 1004 # seems to be preferred in the overall web and is preferred in all 1005 # the leading newspaper websites and in many government departments, 1006 # it has a stronger case than omitting the leading "A". The current 1007 # version of the database therefore uses abbreviations like "AEST" and 1008 # "AEDT" for Australian time zones. 1009 1010 # From Paul Eggert (1995-12-19): 1011 # Shanks & Pottenger report 2:00 for all autumn changes in Australia and NZ. 1012 # Mark Prior writes that his newspaper 1013 # reports that NSW's fall 1995 change will occur at 2:00, 1014 # but Robert Elz says it's been 3:00 in Victoria since 1970 1015 # and perhaps the newspaper's '2:00' is referring to standard time. 1016 # For now we'll continue to assume 2:00s for changes since 1960. 1017 1018 # From Eric Ulevik (1998-01-05): 1019 # 1020 # Here are some URLs to Australian time legislation. These URLs are stable, 1021 # and should probably be included in the data file. There are probably more 1022 # relevant entries in this database. 1023 # 1024 # NSW (including LHI and Broken Hill): 1025 # Standard Time Act 1987 (updated 1995-04-04) 1026 # http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html 1027 # ACT 1028 # Standard Time and Summer Time Act 1972 1029 # http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html 1030 # SA 1031 # Standard Time Act, 1898 1032 # http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html 1033 1034 # From David Grosz (2005-06-13): 1035 # It was announced last week that Daylight Saving would be extended by 1036 # one week next year to allow for the 2006 Commonwealth Games. 1037 # Daylight Saving is now to end for next year only on the first Sunday 1038 # in April instead of the last Sunday in March. 1039 # 1040 # From Gwillim Law (2005-06-14): 1041 # I did some Googling and found that all of those states (and territory) plan 1042 # to extend DST together in 2006. 1043 # ACT: http://www.cmd.act.gov.au/mediareleases/fileread.cfm?file=86.txt 1044 # New South Wales: http://www.thecouriermail.news.com.au/common/story_page/0,5936,15538869%255E1702,00.html 1045 # South Australia: http://www.news.com.au/story/0,10117,15555031-1246,00.html 1046 # Tasmania: http://www.media.tas.gov.au/release.php?id=14772 1047 # Victoria: I wasn't able to find anything separate, but the other articles 1048 # allude to it. 1049 # But not Queensland 1050 # http://www.news.com.au/story/0,10117,15564030-1248,00.html 1051 1052 # Northern Territory 1053 1054 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1055 # # The NORTHERN TERRITORY.. [ Courtesy N.T. Dept of the Chief Minister ] 1056 # # [ Nov 1990 ] 1057 # # N.T. have never utilised any DST due to sub-tropical/tropical location. 1058 # ... 1059 # Zone Australia/North 9:30 - CST 1060 1061 # From Bradley White (1991-03-04): 1062 # A recent excerpt from an Australian newspaper... 1063 # the Northern Territory do[es] not have daylight saving. 1064 1065 # Western Australia 1066 1067 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1068 # # The state of WESTERN AUSTRALIA.. [ Courtesy W.A. dept Premier+Cabinet ] 1069 # # [ Nov 1990 ] 1070 # # W.A. suffers from a great deal of public and political opposition to 1071 # # DST in principle. A bill is brought before parliament in most years, but 1072 # # usually defeated either in the upper house, or in party caucus 1073 # # before reaching parliament. 1074 # ... 1075 # Zone Australia/West 8:00 AW %sST 1076 # ... 1077 # Rule AW 1974 only - Oct lastSun 2:00 1:00 D 1078 # Rule AW 1975 only - Mar Sun>=1 3:00 0 W 1079 # Rule AW 1983 only - Oct lastSun 2:00 1:00 D 1080 # Rule AW 1984 only - Mar Sun>=1 3:00 0 W 1081 1082 # From Bradley White (1991-03-04): 1083 # A recent excerpt from an Australian newspaper... 1084 # Western Australia...do[es] not have daylight saving. 1085 1086 # From John D. Newman via Bradley White (1991-11-02): 1087 # Western Australia is still on "winter time". Some DH in Sydney 1088 # rang me at home a few days ago at 6.00am. (He had just arrived at 1089 # work at 9.00am.) 1090 # W.A. is switching to Summer Time on Nov 17th just to confuse 1091 # everybody again. 1092 1093 # From Arthur David Olson (1992-03-08): 1094 # The 1992 ending date used in the rules is a best guess; 1095 # it matches what was used in the past. 1096 1097 # The Australian Bureau of Meteorology FAQ 1098 # http://www.bom.gov.au/faq/faqgen.htm 1099 # (1999-09-27) writes that Giles Meteorological Station uses 1100 # South Australian time even though it's located in Western Australia. 1101 1102 # Queensland 1103 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1104 # # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ] 1105 # # [ Dec 1990 ] 1106 # ... 1107 # Zone Australia/Queensland 10:00 AQ %sST 1108 # ... 1109 # Rule AQ 1971 only - Oct lastSun 2:00 1:00 D 1110 # Rule AQ 1972 only - Feb lastSun 3:00 0 E 1111 # Rule AQ 1989 max - Oct lastSun 2:00 1:00 D 1112 # Rule AQ 1990 max - Mar Sun>=1 3:00 0 E 1113 1114 # From Bradley White (1989-12-24): 1115 # "Australia/Queensland" now observes daylight time (i.e. from 1116 # October 1989). 1117 1118 # From Bradley White (1991-03-04): 1119 # A recent excerpt from an Australian newspaper... 1120 # ...Queensland...[has] agreed to end daylight saving 1121 # at 3am tomorrow (March 3)... 1122 1123 # From John Mackin (1991-03-06): 1124 # I can certainly confirm for my part that Daylight Saving in NSW did in fact 1125 # end on Sunday, 3 March. I don't know at what hour, though. (It surprised 1126 # me.) 1127 1128 # From Bradley White (1992-03-08): 1129 # ...there was recently a referendum in Queensland which resulted 1130 # in the experimental daylight saving system being abandoned. So, ... 1131 # ... 1132 # Rule QLD 1989 1991 - Oct lastSun 2:00 1:00 D 1133 # Rule QLD 1990 1992 - Mar Sun>=1 3:00 0 S 1134 # ... 1135 1136 # From Arthur David Olson (1992-03-08): 1137 # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes. 1138 1139 # From Christopher Hunt (2006-11-21), after an advance warning 1140 # from Jesper Nørgaard Welen (2006-11-01): 1141 # WA are trialing DST for three years. 1142 # http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721200088DF1/$File/Bill175-1B.pdf 1143 1144 # From Rives McDow (2002-04-09): 1145 # The most interesting region I have found consists of three towns on the 1146 # southern coast.... South Australia observes daylight saving time; Western 1147 # Australia does not. The two states are one and a half hours apart. The 1148 # residents decided to forget about this nonsense of changing the clock so 1149 # much and set the local time 20 hours and 45 minutes from the 1150 # international date line, or right in the middle of the time of South 1151 # Australia and Western Australia.... 1152 # 1153 # From Paul Eggert (2002-04-09): 1154 # This is confirmed by the section entitled 1155 # "What's the deal with time zones???" in 1156 # http://www.earthsci.unimelb.edu.au/~awatkins/null.html 1157 # 1158 # From Alex Livingston (2006-12-07): 1159 # ... it was just on four years ago that I drove along the Eyre Highway, 1160 # which passes through eastern Western Australia close to the southern 1161 # coast of the continent. 1162 # 1163 # I paid particular attention to the time kept there. There can be no 1164 # dispute that UTC+08:45 was considered "the time" from the border 1165 # village just inside the border with South Australia to as far west 1166 # as just east of Caiguna. There can also be no dispute that Eucla is 1167 # the largest population centre in this zone.... 1168 # 1169 # Now that Western Australia is observing daylight saving, the 1170 # question arose whether this part of the state would follow suit. I 1171 # just called the border village and confirmed that indeed they have, 1172 # meaning that they are now observing UTC+09:45. 1173 # 1174 # (2006-12-09): 1175 # I personally doubt that either experimentation with daylight saving 1176 # in WA or its introduction in SA had anything to do with the genesis 1177 # of this time zone. My hunch is that it's been around since well 1178 # before 1975. I remember seeing it noted on road maps decades ago. 1179 1180 # From Paul Eggert (2006-12-15): 1181 # For lack of better info, assume the tradition dates back to the 1182 # introduction of standard time in 1895. 1183 1184 1185 # southeast Australia 1186 # 1187 # From Paul Eggert (2007-07-23): 1188 # Starting autumn 2008 Victoria, NSW, South Australia, Tasmania and the ACT 1189 # end DST the first Sunday in April and start DST the first Sunday in October. 1190 # http://www.theage.com.au/news/national/daylight-savings-to-span-six-months/2007/06/27/1182623966703.html 1191 1192 1193 # South Australia 1194 1195 # From Bradley White (1991-03-04): 1196 # A recent excerpt from an Australian newspaper... 1197 # ...South Australia...[has] agreed to end daylight saving 1198 # at 3am tomorrow (March 3)... 1199 1200 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1201 # # The state of SOUTH AUSTRALIA....[ Courtesy of S.A. Dept of Labour ] 1202 # # [ Nov 1990 ] 1203 # ... 1204 # Zone Australia/South 9:30 AS %sST 1205 # ... 1206 # Rule AS 1971 max - Oct lastSun 2:00 1:00 D 1207 # Rule AS 1972 1985 - Mar Sun>=1 3:00 0 C 1208 # Rule AS 1986 1990 - Mar Sun>=15 3:00 0 C 1209 # Rule AS 1991 max - Mar Sun>=1 3:00 0 C 1210 1211 # From Bradley White (1992-03-11): 1212 # Recent correspondence with a friend in Adelaide 1213 # contained the following exchange: "Due to the Adelaide Festival, 1214 # South Australia delays setting back our clocks for a few weeks." 1215 1216 # From Robert Elz (1992-03-13): 1217 # I heard that apparently (or at least, it appears that) 1218 # South Aus will have an extra 3 weeks daylight saving every even 1219 # numbered year (from 1990). That's when the Adelaide Festival 1220 # is on... 1221 1222 # From Robert Elz (1992-03-16, 00:57:07 +1000): 1223 # DST didn't end in Adelaide today (yesterday).... 1224 # But whether it's "4th Sunday" or "2nd last Sunday" I have no idea whatever... 1225 # (it's just as likely to be "the Sunday we pick for this year"...). 1226 1227 # From Bradley White (1994-04-11): 1228 # If Sun, 15 March, 1992 was at +1030 as kre asserts, but yet Sun, 20 March, 1229 # 1994 was at +0930 as John Connolly's customer seems to assert, then I can 1230 # only conclude that the actual rule is more complicated.... 1231 1232 # From John Warburton (1994-10-07): 1233 # The new Daylight Savings dates for South Australia ... 1234 # was gazetted in the Government Hansard on Sep 26 1994.... 1235 # start on last Sunday in October and end in last sunday in March. 1236 1237 # From Paul Eggert (2007-07-23): 1238 # See "southeast Australia" above for 2008 and later. 1239 1240 # Tasmania 1241 1242 # The rules for 1967 through 1991 were reported by George Shepherd 1243 # via Simon Woodhead via Robert Elz (1991-03-06): 1244 # # The state of TASMANIA.. [Courtesy Tasmanian Dept of Premier + Cabinet ] 1245 # # [ Nov 1990 ] 1246 1247 # From Bill Hart via Guy Harris (1991-10-10): 1248 # Oh yes, the new daylight savings rules are uniquely tasmanian, we have 1249 # 6 weeks a year now when we are out of sync with the rest of Australia 1250 # (but nothing new about that). 1251 1252 # From Alex Livingston (1999-10-04): 1253 # I heard on the ABC (Australian Broadcasting Corporation) radio news on the 1254 # (long) weekend that Tasmania, which usually goes its own way in this regard, 1255 # has decided to join with most of NSW, the ACT, and most of Victoria 1256 # (Australia) and start daylight saving on the last Sunday in August in 2000 1257 # instead of the first Sunday in October. 1258 1259 # Sim Alam (2000-07-03) reported a legal citation for the 2000/2001 rules: 1260 # http://www.thelaw.tas.gov.au/fragview/42++1968+GS3A@EN+2000070300 1261 1262 # From Paul Eggert (2007-07-23): 1263 # See "southeast Australia" above for 2008 and later. 1264 1265 # Victoria 1266 1267 # The rules for 1971 through 1991 were reported by George Shepherd 1268 # via Simon Woodhead via Robert Elz (1991-03-06): 1269 # # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ] 1270 # # [ Nov 1990 ] 1271 1272 # From Scott Harrington (2001-08-29): 1273 # On KQED's "City Arts and Lectures" program last night I heard an 1274 # interesting story about daylight savings time. Dr. John Heilbron was 1275 # discussing his book "The Sun in the Church: Cathedrals as Solar 1276 # Observatories"[1], and in particular the Shrine of Remembrance[2] located 1277 # in Melbourne, Australia. 1278 # 1279 # Apparently the shrine's main purpose is a beam of sunlight which 1280 # illuminates a special spot on the floor at the 11th hour of the 11th day 1281 # of the 11th month (Remembrance Day) every year in memory of Australia's 1282 # fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time, 1283 # you will indeed see the sunbeam illuminate the special spot at the 1284 # expected time. 1285 # 1286 # However, that is only because of some special mirror contraption that had 1287 # to be employed, since due to daylight savings time, the true solar time of 1288 # the remembrance moment occurs one hour later (or earlier?). Perhaps 1289 # someone with more information on this jury-rig can tell us more. 1290 # 1291 # [1] http://www.hup.harvard.edu/catalog/HEISUN.html 1292 # [2] http://www.shrine.org.au 1293 1294 # From Paul Eggert (2007-07-23): 1295 # See "southeast Australia" above for 2008 and later. 1296 1297 # New South Wales 1298 1299 # From Arthur David Olson: 1300 # New South Wales and subjurisdictions have their own ideas of a fun time. 1301 # Based on law library research by John Mackin, 1302 # who notes: 1303 # In Australia, time is not legislated federally, but rather by the 1304 # individual states. Thus, while such terms as "Eastern Standard Time" 1305 # [I mean, of course, Australian EST, not any other kind] are in common 1306 # use, _they have NO REAL MEANING_, as they are not defined in the 1307 # legislation. This is very important to understand. 1308 # I have researched New South Wales time only... 1309 1310 # From Eric Ulevik (1999-05-26): 1311 # DST will start in NSW on the last Sunday of August, rather than the usual 1312 # October in 2000. See: Matthew Moore, 1313 # Two months more daylight saving, Sydney Morning Herald (1999-05-26). 1314 # http://www.smh.com.au/news/9905/26/pageone/pageone4.html 1315 1316 # From Paul Eggert (1999-09-27): 1317 # See the following official NSW source: 1318 # Daylight Saving in New South Wales. 1319 # http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ 1320 # 1321 # Narrabri Shire (NSW) council has announced it will ignore the extension of 1322 # daylight saving next year. See: 1323 # Narrabri Council to ignore daylight saving 1324 # http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm 1325 # (1999-07-22). For now, we'll wait to see if this really happens. 1326 # 1327 # Victoria will following NSW. See: 1328 # Vic to extend daylight saving (1999-07-28) 1329 # http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm 1330 # 1331 # However, South Australia rejected the DST request. See: 1332 # South Australia rejects Olympics daylight savings request (1999-07-19) 1333 # http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm 1334 # 1335 # Queensland also will not observe DST for the Olympics. See: 1336 # Qld says no to daylight savings for Olympics 1337 # http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm 1338 # (1999-06-01), which quotes Queensland Premier Peter Beattie as saying 1339 # "Look you've got to remember in my family when this came up last time 1340 # I voted for it, my wife voted against it and she said to me it's all very 1341 # well for you, you don't have to worry about getting the children out of 1342 # bed, getting them to school, getting them to sleep at night. 1343 # I've been through all this argument domestically...my wife rules." 1344 # 1345 # Broken Hill will stick with South Australian time in 2000. See: 1346 # Broken Hill to be behind the times (1999-07-21) 1347 # http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm 1348 1349 # IATA SSIM (1998-09) says that the spring 2000 change for Australian 1350 # Capital Territory, New South Wales except Lord Howe Island and Broken 1351 # Hill, and Victoria will be August 27, presumably due to the Sydney Olympics. 1352 1353 # From Eric Ulevik, referring to Sydney's Sun Herald (2000-08-13), page 29: 1354 # The Queensland Premier Peter Beattie is encouraging northern NSW 1355 # towns to use Queensland time. 1356 1357 # From Paul Eggert (2007-07-23): 1358 # See "southeast Australia" above for 2008 and later. 1359 1360 # Yancowinna 1361 1362 # From John Mackin (1989-01-04): 1363 # 'Broken Hill' means the County of Yancowinna. 1364 1365 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1366 # # YANCOWINNA.. [ Confirmation courtesy of Broken Hill Postmaster ] 1367 # # [ Dec 1990 ] 1368 # ... 1369 # # Yancowinna uses Central Standard Time, despite [its] location on the 1370 # # New South Wales side of the S.A. border. Most business and social dealings 1371 # # are with CST zones, therefore CST is legislated by local government 1372 # # although the switch to Summer Time occurs in line with N.S.W. There have 1373 # # been years when this did not apply, but the historical data is not 1374 # # presently available. 1375 # Zone Australia/Yancowinna 9:30 AY %sST 1376 # ... 1377 # Rule AY 1971 1985 - Oct lastSun 2:00 1:00 D 1378 # Rule AY 1972 only - Feb lastSun 3:00 0 C 1379 # [followed by other Rules] 1380 1381 # Lord Howe Island 1382 1383 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1384 # LHI... [ Courtesy of Pauline Van Winsen ] 1385 # [ Dec 1990 ] 1386 # Lord Howe Island is located off the New South Wales coast, and is half an 1387 # hour ahead of NSW time. 1388 1389 # From James Lonergan, Secretary, Lord Howe Island Board (2000-01-27): 1390 # Lord Howe Island summer time in 2000/2001 will commence on the same 1391 # date as the rest of NSW (i.e. 2000-08-27). For your information the 1392 # Lord Howe Island Board (controlling authority for the Island) is 1393 # seeking the community's views on various options for summer time 1394 # arrangements on the Island, e.g. advance clocks by 1 full hour 1395 # instead of only 30 minutes. [Dependent] on the wishes of residents 1396 # the Board may approach the NSW government to change the existing 1397 # arrangements. The starting date for summer time on the Island will 1398 # however always coincide with the rest of NSW. 1399 1400 # From James Lonergan, Secretary, Lord Howe Island Board (2000-10-25): 1401 # Lord Howe Island advances clocks by 30 minutes during DST in NSW and retards 1402 # clocks by 30 minutes when DST finishes. Since DST was most recently 1403 # introduced in NSW, the "changeover" time on the Island has been 02:00 as 1404 # shown on clocks on LHI. I guess this means that for 30 minutes at the start 1405 # of DST, LHI is actually 1 hour ahead of the rest of NSW. 1406 1407 # From Paul Eggert (2006-03-22): 1408 # For Lord Howe dates we use Shanks & Pottenger through 1989, and 1409 # Lonergan thereafter. For times we use Lonergan. 1410 1411 # From Paul Eggert (2007-07-23): 1412 # See "southeast Australia" above for 2008 and later. 1413 1414 # From Steffen Thorsen (2009-04-28): 1415 # According to the official press release, South Australia's extended daylight 1416 # saving period will continue with the same rules as used during the 2008-2009 1417 # summer (southern hemisphere). 1418 # 1419 # From 1420 # http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf 1421 # The extended daylight saving period that South Australia has been trialling 1422 # for over the last year is now set to be ongoing. 1423 # Daylight saving will continue to start on the first Sunday in October each 1424 # year and finish on the first Sunday in April the following year. 1425 # Industrial Relations Minister, Paul Caica, says this provides South Australia 1426 # with a consistent half hour time difference with NSW, Victoria, Tasmania and 1427 # the ACT for all 52 weeks of the year... 1428 # 1429 # We have a wrap-up here: 1430 # http://www.timeanddate.com/news/time/south-australia-extends-dst.html 1431 ############################################################################### 1432 1433 # New Zealand 1434 1435 # From Mark Davies (1990-10-03): 1436 # the 1989/90 year was a trial of an extended "daylight saving" period. 1437 # This trial was deemed successful and the extended period adopted for 1438 # subsequent years (with the addition of a further week at the start). 1439 # source - phone call to Ministry of Internal Affairs Head Office. 1440 1441 # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06): 1442 # # The Country of New Zealand (Australia's east island -) Gee they hate that! 1443 # # or is Australia the west island of N.Z. 1444 # # [ courtesy of Geoff Tribble.. Auckland N.Z. ] 1445 # # [ Nov 1990 ] 1446 # ... 1447 # Rule NZ 1974 1988 - Oct lastSun 2:00 1:00 D 1448 # Rule NZ 1989 max - Oct Sun>=1 2:00 1:00 D 1449 # Rule NZ 1975 1989 - Mar Sun>=1 3:00 0 S 1450 # Rule NZ 1990 max - Mar lastSun 3:00 0 S 1451 # ... 1452 # Zone NZ 12:00 NZ NZ%sT # New Zealand 1453 # Zone NZ-CHAT 12:45 - NZ-CHAT # Chatham Island 1454 1455 # From Arthur David Olson (1992-03-08): 1456 # The chosen rules use the Davies October 8 values for the start of DST in 1989 1457 # rather than the October 1 value. 1458 1459 # From Paul Eggert (1995-12-19); 1460 # Shank & Pottenger report 2:00 for all autumn changes in Australia and NZ. 1461 # Robert Uzgalis writes that the New Zealand Daylight 1462 # Savings Time Order in Council dated 1990-06-18 specifies 2:00 standard 1463 # time on both the first Sunday in October and the third Sunday in March. 1464 # As with Australia, we'll assume the tradition is 2:00s, not 2:00. 1465 # 1466 # From Paul Eggert (2006-03-22): 1467 # The Department of Internal Affairs (DIA) maintains a brief history, 1468 # as does Carol Squires; see tz-link.htm for the full references. 1469 # Use these sources in preference to Shanks & Pottenger. 1470 # 1471 # For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with 1472 # transitions at 2:45 local standard time; this confirms that Chatham 1473 # is always exactly 45 minutes ahead of Auckland. 1474 1475 # From Colin Sharples (2007-04-30): 1476 # DST will now start on the last Sunday in September, and end on the 1477 # first Sunday in April. The changes take effect this year, meaning 1478 # that DST will begin on 2007-09-30 2008-04-06. 1479 # http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Daylight-saving-to-be-extended 1480 1481 # From Paul Eggert (2014-07-14): 1482 # Chatham Island time was formally standardized on 1957-01-01 by 1483 # New Zealand's Standard Time Amendment Act 1956 (1956-10-26). 1484 # http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf 1485 # According to Google Books snippet view, a speaker in the New Zealand 1486 # parliamentary debates in 1956 said "Clause 78 makes provision for standard 1487 # time in the Chatham Islands. The time there is 45 minutes in advance of New 1488 # Zealand time. I understand that is the time they keep locally, anyhow." 1489 # For now, assume this practice goes back to the introduction of standard time 1490 # in New Zealand, as this would make Chatham Islands time almost exactly match 1491 # LMT back when New Zealand was at UTC+11:30; also, assume Chatham Islands did 1492 # not observe New Zealand's prewar DST. 1493 1494 ############################################################################### 1495 1496 1497 # Fiji 1498 1499 # Howse writes (p 153) that in 1879 the British governor of Fiji 1500 # enacted an ordinance standardizing the islands on Antipodean Time 1501 # instead of the American system (which was one day behind). 1502 1503 # From Rives McDow (1998-10-08): 1504 # Fiji will introduce DST effective 0200 local time, 1998-11-01 1505 # until 0300 local time 1999-02-28. Each year the DST period will 1506 # be from the first Sunday in November until the last Sunday in February. 1507 1508 # From Paul Eggert (2000-01-08): 1509 # IATA SSIM (1999-09) says DST ends 0100 local time. Go with McDow. 1510 1511 # From the BBC World Service in 1512 # http://news.bbc.co.uk/2/hi/asia-pacific/205226.stm (1998-10-31 16:03 UTC): 1513 # The Fijian government says the main reasons for the time change is to 1514 # improve productivity and reduce road accidents.... [T]he move is also 1515 # intended to boost Fiji's ability to attract tourists to witness the dawning 1516 # of the new millennium. 1517 1518 # http://www.fiji.gov.fj/press/2000_09/2000_09_13-05.shtml (2000-09-13) 1519 # reports that Fiji has discontinued DST. 1520 1521 1522 # Kiribati 1523 1524 # From Paul Eggert (1996-01-22): 1525 # Today's _Wall Street Journal_ (page 1) reports that Kiribati 1526 # "declared it the same day [throughout] the country as of Jan. 1, 1995" 1527 # as part of the competition to be first into the 21st century. 1528 1529 1530 # Kwajalein 1531 1532 # In comp.risks 14.87 (26 August 1993), Peter Neumann writes: 1533 # I wonder what happened in Kwajalein, where there was NO Friday, 1534 # 1993-08-20. Thursday night at midnight Kwajalein switched sides with 1535 # respect to the International Date Line, to rejoin its fellow islands, 1536 # going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink. 1537 1538 1539 # N Mariana Is, Guam 1540 1541 # Howse writes (p 153) "The Spaniards, on the other hand, reached the 1542 # Philippines and the Ladrones from America," and implies that the Ladrones 1543 # (now called the Marianas) kept American date for quite some time. 1544 # For now, we assume the Ladrones switched at the same time as the Philippines; 1545 # see Asia/Manila. 1546 1547 # US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time, 1548 # under the name "Chamorro Standard Time". There is no official abbreviation, 1549 # but Congressman Robert A. Underwood, author of the bill that became law, 1550 # wrote in a press release (2000-12-27) that he will seek the use of "ChST". 1551 1552 1553 # Micronesia 1554 1555 # Alan Eugene Davis writes (1996-03-16), 1556 # "I am certain, having lived there for the past decade, that 'Truk' 1557 # (now properly known as Chuuk) ... is in the time zone GMT+10." 1558 # 1559 # Shanks & Pottenger write that Truk switched from UTC+10 to UTC+11 1560 # on 1978-10-01; ignore this for now. 1561 1562 # From Paul Eggert (1999-10-29): 1563 # The Federated States of Micronesia Visitors Board writes in 1564 # The Federated States of Micronesia - Visitor Information (1999-01-26) 1565 # http://www.fsmgov.org/info/clocks.html 1566 # that Truk and Yap are UTC+10, and Ponape and Kosrae are UTC+11. 1567 # We don't know when Kosrae switched from UTC+12; assume January 1 for now. 1568 1569 1570 # Midway 1571 1572 # From Charles T O'Connor, KMTH DJ (1956), 1573 # quoted in the KTMH section of the Radio Heritage Collection 1574 # <http://radiodx.com/spdxr/KMTH.htm> (2002-12-31): 1575 # For the past two months we've been on what is known as Daylight 1576 # Saving Time. This time has put us on air at 5am in the morning, 1577 # your time down there in New Zealand. Starting September 2, 1956 1578 # we'll again go back to Standard Time. This'll mean that we'll go to 1579 # air at 6am your time. 1580 # 1581 # From Paul Eggert (2003-03-23): 1582 # We don't know the date of that quote, but we'll guess they 1583 # started DST on June 3. Possibly DST was observed other years 1584 # in Midway, but we have no record of it. 1585 1586 # Norfolk 1587 1588 # From Alexander Krivenyshev (2015-09-23): 1589 # Norfolk Island will change ... from +1130 to +1100: 1590 # https://www.comlaw.gov.au/Details/F2015L01483/Explanatory%20Statement/Text 1591 # ... at 12.30 am (by legal time in New South Wales) on 4 October 2015. 1592 # http://www.norfolkisland.gov.nf/nia/MediaRelease/Media%20Release%20Norfolk%20Island%20Standard%20Time%20Change.pdf 1593 1594 # From Paul Eggert (2015-09-23): 1595 # Transitions before 2015 are from timeanddate.com, which consulted 1596 # the Norfolk Island Museum and the Australian Bureau of Meteorology's 1597 # Norfolk Island station, and found no record of Norfolk observing DST 1598 # other than in 1974/5. See: 1599 # http://www.timeanddate.com/time/australia/norfolk-island.html 1600 1601 # Pitcairn 1602 1603 # From Rives McDow (1999-11-08): 1604 # A Proclamation was signed by the Governor of Pitcairn on the 27th March 1998 1605 # with regard to Pitcairn Standard Time. The Proclamation is as follows. 1606 # 1607 # The local time for general purposes in the Islands shall be 1608 # Co-ordinated Universal time minus 8 hours and shall be known 1609 # as Pitcairn Standard Time. 1610 # 1611 # ... I have also seen Pitcairn listed as UTC minus 9 hours in several 1612 # references, and can only assume that this was an error in interpretation 1613 # somehow in light of this proclamation. 1614 1615 # From Rives McDow (1999-11-09): 1616 # The Proclamation regarding Pitcairn time came into effect on 27 April 1998 1617 # ... at midnight. 1618 1619 # From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave: 1620 # Betty Christian told me yesterday that their local time is the same as 1621 # Pacific Standard Time. They used to be 1/2 hour different from us here in 1622 # Sacramento but it was changed a couple of years ago. 1623 1624 1625 # (Western) Samoa and American Samoa 1626 1627 # Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald) 1628 # that in 1879 the King of Samoa decided to change 1629 # "the date in his kingdom from the Antipodean to the American system, 1630 # ordaining - by a masterpiece of diplomatic flattery - that 1631 # the Fourth of July should be celebrated twice in that year." 1632 1633 # Although Shanks & Pottenger says they both switched to UTC-11:30 1634 # in 1911, and to UTC-11 in 1950. many earlier sources give UTC-11 1635 # for American Samoa, e.g., the US National Bureau of Standards 1636 # circular "Standard Time Throughout the World", 1932. 1637 # Assume American Samoa switched to UTC-11 in 1911, not 1950, 1638 # and that after 1950 they agreed until (western) Samoa skipped a 1639 # day in 2011. Assume also that the Samoas follow the US and New 1640 # Zealand's "ST"/"DT" style of daylight-saving abbreviations. 1641 1642 # Tonga 1643 1644 # From Paul Eggert (1996-01-22): 1645 # Today's _Wall Street Journal_ (p 1) reports that "Tonga has been plotting 1646 # to sneak ahead of [New Zealanders] by introducing daylight-saving time." 1647 # Since Kiribati has moved the Date Line it's not clear what Tonga will do. 1648 1649 # Don Mundell writes in the 1997-02-20 Tonga Chronicle 1650 # How Tonga became 'The Land where Time Begins': 1651 # http://www.tongatapu.net.to/tonga/homeland/timebegins.htm 1652 # 1653 # Until 1941 Tonga maintained a standard time 50 minutes ahead of NZST 1654 # 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its 1655 # standard time in 1940s, Tonga had the choice of subtracting from its 1656 # local time to come on the same standard time as New Zealand or of 1657 # advancing its time to maintain the differential of 13 degrees 1658 # (approximately 50 minutes ahead of New Zealand time). 1659 # 1660 # Because His Majesty King Tāufaʻāhau Tupou IV, then Crown Prince 1661 # Tungī, preferred to ensure Tonga's title as the land where time 1662 # begins, the Legislative Assembly approved the latter change. 1663 # 1664 # But some of the older, more conservative members from the outer 1665 # islands objected. "If at midnight on Dec. 31, we move ahead 40 1666 # minutes, as your Royal Highness wishes, what becomes of the 40 1667 # minutes we have lost?" 1668 # 1669 # The Crown Prince, presented an unanswerable argument: "Remember that 1670 # on the World Day of Prayer, you would be the first people on Earth 1671 # to say your prayers in the morning." 1672 1673 # From Paul Eggert (2006-03-22): 1674 # Shanks & Pottenger say the transition was on 1968-10-01; go with Mundell. 1675 1676 # From Eric Ulevik (1999-05-03): 1677 # Tonga's director of tourism, who is also secretary of the National Millennium 1678 # Committee, has a plan to get Tonga back in front. 1679 # He has proposed a one-off move to tropical daylight saving for Tonga from 1680 # October to March, which has won approval in principle from the Tongan 1681 # Government. 1682 1683 # From Steffen Thorsen (1999-09-09): 1684 # * Tonga will introduce DST in November 1685 # 1686 # I was given this link by John Letts: 1687 # http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm 1688 # 1689 # I have not been able to find exact dates for the transition in November 1690 # yet. By reading this article it seems like Fiji will be 14 hours ahead 1691 # of UTC as well, but as far as I know Fiji will only be 13 hours ahead 1692 # (12 + 1 hour DST). 1693 1694 # From Arthur David Olson (1999-09-20): 1695 # According to <http://www.tongaonline.com/news/sept1799.html>: 1696 # "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000 1697 # and annually thereafter from the first Saturday in October through the 1698 # third Saturday of April. Under the system approved by Privy Council on 1699 # Sept. 10, clocks must be turned ahead one hour on the opening day and 1700 # set back an hour on the closing date." 1701 # Alas, no indication of the time of day. 1702 1703 # From Rives McDow (1999-10-06): 1704 # Tonga started its Daylight Saving on Saturday morning October 2nd at 0200am. 1705 # Daylight Saving ends on April 16 at 0300am which is Sunday morning. 1706 1707 # From Steffen Thorsen (2000-10-31): 1708 # Back in March I found a notice on the website http://www.tongaonline.com 1709 # that Tonga changed back to standard time one month early, on March 19 1710 # instead of the original reported date April 16. Unfortunately, the article 1711 # is no longer available on the site, and I did not make a copy of the 1712 # text, and I have forgotten to report it here. 1713 # (Original URL was <http://www.tongaonline.com/news/march162000.htm>) 1714 1715 # From Rives McDow (2000-12-01): 1716 # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27. 1717 1718 # From Sione Moala-Mafi (2001-09-20) via Rives McDow: 1719 # At 2:00am on the first Sunday of November, the standard time in the Kingdom 1720 # shall be moved forward by one hour to 3:00am. At 2:00am on the last Sunday 1721 # of January the standard time in the Kingdom shall be moved backward by one 1722 # hour to 1:00am. 1723 1724 # From Pulu 'Anau (2002-11-05): 1725 # The law was for 3 years, supposedly to get renewed. It wasn't. 1726 1727 1728 # Wake 1729 1730 # From Vernice Anderson, Personal Secretary to Philip Jessup, 1731 # US Ambassador At Large (oral history interview, 1971-02-02): 1732 # 1733 # Saturday, the 14th [of October, 1950] - ... The time was all the 1734 # more confusing at that point, because we had crossed the 1735 # International Date Line, thus getting two Sundays. Furthermore, we 1736 # discovered that Wake Island had two hours of daylight saving time 1737 # making calculation of time in Washington difficult if not almost 1738 # impossible. 1739 # 1740 # http://www.trumanlibrary.org/wake/meeting.htm 1741 1742 # From Paul Eggert (2003-03-23): 1743 # We have no other report of DST in Wake Island, so omit this info for now. 1744 1745 ############################################################################### 1746 1747 # The International Date Line 1748 1749 # From Gwillim Law (2000-01-03): 1750 # 1751 # The International Date Line is not defined by any international standard, 1752 # convention, or treaty. Mapmakers are free to draw it as they please. 1753 # Reputable mapmakers will simply ensure that every point of land appears on 1754 # the correct side of the IDL, according to the date legally observed there. 1755 # 1756 # When Kiribati adopted a uniform date in 1995, thereby moving the Phoenix and 1757 # Line Islands to the west side of the IDL (or, if you prefer, moving the IDL 1758 # to the east side of the Phoenix and Line Islands), I suppose that most 1759 # mapmakers redrew the IDL following the boundary of Kiribati. Even that line 1760 # has a rather arbitrary nature. The straight-line boundaries between Pacific 1761 # island nations that are shown on many maps are based on an international 1762 # convention, but are not legally binding national borders.... The date is 1763 # governed by the IDL; therefore, even on the high seas, there may be some 1764 # places as late as fourteen hours later than UTC. And, since the IDL is not 1765 # an international standard, there are some places on the high seas where the 1766 # correct date is ambiguous. 1767 1768 # From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31): 1769 # Before 1920, all ships kept local apparent time on the high seas by setting 1770 # their clocks at night or at the morning sight so that, given the ship's 1771 # speed and direction, it would be 12 o'clock when the Sun crossed the ship's 1772 # meridian (12 o'clock = local apparent noon). During 1917, at the 1773 # Anglo-French Conference on Time-keeping at Sea, it was recommended that all 1774 # ships, both military and civilian, should adopt hourly standard time zones 1775 # on the high seas. Whenever a ship was within the territorial waters of any 1776 # nation it would use that nation's standard time. The captain was permitted 1777 # to change his ship's clocks at a time of his choice following his ship's 1778 # entry into another zone time - he often chose midnight. These zones were 1779 # adopted by all major fleets between 1920 and 1925 but not by many 1780 # independent merchant ships until World War II. 1781 1782 # From Paul Eggert, using references suggested by Oscar van Vlijmen 1783 # (2005-03-20): 1784 # 1785 # The American Practical Navigator (2002) 1786 # http://pollux.nss.nima.mil/pubs/pubs_j_apn_sections.html?rid=187 1787 # talks only about the 180-degree meridian with respect to ships in 1788 # international waters; it ignores the international date line.