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- # This file is in the public domain, so clarified as of
- # 2009-05-17 by Arthur David Olson.
- # This file also includes Pacific islands.
- # Notes are at the end of this file
- ###############################################################################
- # Australia
- # Please see the notes below for the controversy about "EST" versus "AEST" etc.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Aus 1917 only - Jan 1 0:01 1:00 D
- Rule Aus 1917 only - Mar 25 2:00 0 S
- Rule Aus 1942 only - Jan 1 2:00 1:00 D
- Rule Aus 1942 only - Mar 29 2:00 0 S
- Rule Aus 1942 only - Sep 27 2:00 1:00 D
- Rule Aus 1943 1944 - Mar lastSun 2:00 0 S
- Rule Aus 1943 only - Oct 3 2:00 1:00 D
- # Go with Whitman and the Australian National Standards Commission, which
- # says W Australia didn't use DST in 1943/1944. Ignore Whitman's claim that
- # 1944/1945 was just like 1943/1944.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- # Northern Territory
- Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
- 9:00 - ACST 1899 May
- 9:30 Aus AC%sT
- # Western Australia
- #
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AW 1974 only - Oct lastSun 2:00s 1:00 D
- Rule AW 1975 only - Mar Sun>=1 2:00s 0 S
- Rule AW 1983 only - Oct lastSun 2:00s 1:00 D
- Rule AW 1984 only - Mar Sun>=1 2:00s 0 S
- Rule AW 1991 only - Nov 17 2:00s 1:00 D
- Rule AW 1992 only - Mar Sun>=1 2:00s 0 S
- Rule AW 2006 only - Dec 3 2:00s 1:00 D
- Rule AW 2007 2009 - Mar lastSun 2:00s 0 S
- Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 D
- Zone Australia/Perth 7:43:24 - LMT 1895 Dec
- 8:00 Aus AW%sT 1943 Jul
- 8:00 AW AW%sT
- Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
- 8:45 Aus ACW%sT 1943 Jul
- 8:45 AW ACW%sT
- # Queensland
- #
- # From Alex Livingston (1996-11-01):
- # I have heard or read more than once that some resort islands off the coast
- # of Queensland chose to keep observing daylight-saving time even after
- # Queensland ceased to.
- #
- # From Paul Eggert (1996-11-22):
- # IATA SSIM (1993-02/1994-09) say that the Holiday Islands (Hayman, Lindeman,
- # Hamilton) observed DST for two years after the rest of Queensland stopped.
- # Hamilton is the largest, but there is also a Hamilton in Victoria,
- # so use Lindeman.
- #
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AQ 1971 only - Oct lastSun 2:00s 1:00 D
- Rule AQ 1972 only - Feb lastSun 2:00s 0 S
- Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 D
- Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 S
- Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 D
- Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 S
- Zone Australia/Brisbane 10:12:08 - LMT 1895
- 10:00 Aus AE%sT 1971
- 10:00 AQ AE%sT
- Zone Australia/Lindeman 9:55:56 - LMT 1895
- 10:00 Aus AE%sT 1971
- 10:00 AQ AE%sT 1992 Jul
- 10:00 Holiday AE%sT
- # South Australia
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AS 1971 1985 - Oct lastSun 2:00s 1:00 D
- Rule AS 1986 only - Oct 19 2:00s 1:00 D
- Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 D
- Rule AS 1972 only - Feb 27 2:00s 0 S
- Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 S
- Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 S
- Rule AS 1991 only - Mar 3 2:00s 0 S
- Rule AS 1992 only - Mar 22 2:00s 0 S
- Rule AS 1993 only - Mar 7 2:00s 0 S
- Rule AS 1994 only - Mar 20 2:00s 0 S
- Rule AS 1995 2005 - Mar lastSun 2:00s 0 S
- Rule AS 2006 only - Apr 2 2:00s 0 S
- Rule AS 2007 only - Mar lastSun 2:00s 0 S
- Rule AS 2008 max - Apr Sun>=1 2:00s 0 S
- Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 D
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Australia/Adelaide 9:14:20 - LMT 1895 Feb
- 9:00 - ACST 1899 May
- 9:30 Aus AC%sT 1971
- 9:30 AS AC%sT
- # Tasmania
- #
- # From Paul Eggert (2005-08-16):
- # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
- # says King Island didn't observe DST from WWII until late 1971.
- #
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AT 1967 only - Oct Sun>=1 2:00s 1:00 D
- Rule AT 1968 only - Mar lastSun 2:00s 0 S
- Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 D
- Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 S
- Rule AT 1972 only - Feb lastSun 2:00s 0 S
- Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 S
- Rule AT 1982 1983 - Mar lastSun 2:00s 0 S
- Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 S
- Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 D
- Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 S
- Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 D
- Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 D
- Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 D
- Rule AT 1991 2005 - Mar lastSun 2:00s 0 S
- Rule AT 2000 only - Aug lastSun 2:00s 1:00 D
- Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 D
- Rule AT 2006 only - Apr Sun>=1 2:00s 0 S
- Rule AT 2007 only - Mar lastSun 2:00s 0 S
- Rule AT 2008 max - Apr Sun>=1 2:00s 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Australia/Hobart 9:49:16 - LMT 1895 Sep
- 10:00 - AEST 1916 Oct 1 2:00
- 10:00 1:00 AEDT 1917 Feb
- 10:00 Aus AE%sT 1967
- 10:00 AT AE%sT
- Zone Australia/Currie 9:35:28 - LMT 1895 Sep
- 10:00 - AEST 1916 Oct 1 2:00
- 10:00 1:00 AEDT 1917 Feb
- 10:00 Aus AE%sT 1971 Jul
- 10:00 AT AE%sT
- # Victoria
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AV 1971 1985 - Oct lastSun 2:00s 1:00 D
- Rule AV 1972 only - Feb lastSun 2:00s 0 S
- Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 S
- Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 S
- Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 D
- Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 D
- Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 S
- Rule AV 1995 2005 - Mar lastSun 2:00s 0 S
- Rule AV 2000 only - Aug lastSun 2:00s 1:00 D
- Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 D
- Rule AV 2006 only - Apr Sun>=1 2:00s 0 S
- Rule AV 2007 only - Mar lastSun 2:00s 0 S
- Rule AV 2008 max - Apr Sun>=1 2:00s 0 S
- Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 D
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Australia/Melbourne 9:39:52 - LMT 1895 Feb
- 10:00 Aus AE%sT 1971
- 10:00 AV AE%sT
- # New South Wales
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule AN 1971 1985 - Oct lastSun 2:00s 1:00 D
- Rule AN 1972 only - Feb 27 2:00s 0 S
- Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 S
- Rule AN 1982 only - Apr Sun>=1 2:00s 0 S
- Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 S
- Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 S
- Rule AN 1986 only - Oct 19 2:00s 1:00 D
- Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 D
- Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 S
- Rule AN 1996 2005 - Mar lastSun 2:00s 0 S
- Rule AN 2000 only - Aug lastSun 2:00s 1:00 D
- Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 D
- Rule AN 2006 only - Apr Sun>=1 2:00s 0 S
- Rule AN 2007 only - Mar lastSun 2:00s 0 S
- Rule AN 2008 max - Apr Sun>=1 2:00s 0 S
- Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 D
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
- 10:00 Aus AE%sT 1971
- 10:00 AN AE%sT
- Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb
- 10:00 - AEST 1896 Aug 23
- 9:00 - ACST 1899 May
- 9:30 Aus AC%sT 1971
- 9:30 AN AC%sT 2000
- 9:30 AS AC%sT
- # Lord Howe Island
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule LH 1981 1984 - Oct lastSun 2:00 1:00 D
- Rule LH 1982 1985 - Mar Sun>=1 2:00 0 S
- Rule LH 1985 only - Oct lastSun 2:00 0:30 D
- Rule LH 1986 1989 - Mar Sun>=15 2:00 0 S
- Rule LH 1986 only - Oct 19 2:00 0:30 D
- Rule LH 1987 1999 - Oct lastSun 2:00 0:30 D
- Rule LH 1990 1995 - Mar Sun>=1 2:00 0 S
- Rule LH 1996 2005 - Mar lastSun 2:00 0 S
- Rule LH 2000 only - Aug lastSun 2:00 0:30 D
- Rule LH 2001 2007 - Oct lastSun 2:00 0:30 D
- Rule LH 2006 only - Apr Sun>=1 2:00 0 S
- Rule LH 2007 only - Mar lastSun 2:00 0 S
- Rule LH 2008 max - Apr Sun>=1 2:00 0 S
- Rule LH 2008 max - Oct Sun>=1 2:00 0:30 D
- Zone Australia/Lord_Howe 10:36:20 - LMT 1895 Feb
- 10:00 - AEST 1981 Mar
- 10:30 LH LH%sT
- # Australian miscellany
- #
- # Ashmore Is, Cartier
- # no indigenous inhabitants; only seasonal caretakers
- # no times are set
- #
- # Coral Sea Is
- # no indigenous inhabitants; only meteorologists
- # no times are set
- #
- # Macquarie
- # Permanent occupation (scientific station) 1911-1915 and since 25 March 1948;
- # sealing and penguin oil station operated Nov 1899 to Apr 1919. See the
- # Tasmania Parks & Wildlife Service history of sealing at Macquarie Island
- # http://www.parks.tas.gov.au/index.aspx?base=1828
- # http://www.parks.tas.gov.au/index.aspx?base=1831
- # Guess that it was like Australia/Hobart while inhabited before 2010.
- #
- # From Steffen Thorsen (2010-03-10):
- # We got these changes from the Australian Antarctic Division:
- # - Macquarie Island will stay on UTC+11 for winter and therefore not
- # switch back from daylight savings time when other parts of Australia do
- # on 4 April.
- #
- # From Arthur David Olson (2013-05-23):
- # The 1919 transition is overspecified below so pre-2013 zics
- # will produce a binary file with an [A]EST-type as the first 32-bit type;
- # this is required for correct handling of times before 1916 by
- # pre-2013 versions of localtime.
- Zone Antarctica/Macquarie 0 - zzz 1899 Nov
- 10:00 - AEST 1916 Oct 1 2:00
- 10:00 1:00 AEDT 1917 Feb
- 10:00 Aus AE%sT 1919 Apr 1 0:00s
- 0 - zzz 1948 Mar 25
- 10:00 Aus AE%sT 1967
- 10:00 AT AE%sT 2010 Apr 4 3:00
- 11:00 - MIST # Macquarie I Standard Time
- # Christmas
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Indian/Christmas 7:02:52 - LMT 1895 Feb
- 7:00 - CXT # Christmas Island Time
- # Cocos (Keeling) Is
- # These islands were ruled by the Ross family from about 1830 to 1978.
- # We don't know when standard time was introduced; for now, we guess 1900.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Indian/Cocos 6:27:40 - LMT 1900
- 6:30 - CCT # Cocos Islands Time
- # Fiji
- # Milne gives 11:55:44 for Suva.
- # From Alexander Krivenyshev (2009-11-10):
- # According to Fiji Broadcasting Corporation, Fiji plans to re-introduce DST
- # from November 29th 2009 to April 25th 2010.
- #
- # "Daylight savings to commence this month"
- # http://www.radiofiji.com.fj/fullstory.php?id=23719
- # http://www.worldtimezone.com/dst_news/dst_news_fiji01.html
- # From Steffen Thorsen (2009-11-10):
- # The Fiji Government has posted some more details about the approved
- # amendments:
- # http://www.fiji.gov.fj/publish/page_16198.shtml
- # From Steffen Thorsen (2010-03-03):
- # The Cabinet in Fiji has decided to end DST about a month early, on
- # 2010-03-28 at 03:00.
- # The plan is to observe DST again, from 2010-10-24 to sometime in March
- # 2011 (last Sunday a good guess?).
- #
- # Official source:
- # 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
- #
- # A bit more background info here:
- # http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
- # From Alexander Krivenyshev (2010-10-24):
- # According to Radio Fiji and Fiji Times online, Fiji will end DST 3
- # weeks earlier than expected - on March 6, 2011, not March 27, 2011...
- # Here is confirmation from Government of the Republic of the Fiji Islands,
- # Ministry of Information (fiji.gov.fj) web site:
- # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155
- # http://www.worldtimezone.com/dst_news/dst_news_fiji04.html
- # From Steffen Thorsen (2011-10-03):
- # Now the dates have been confirmed, and at least our start date
- # assumption was correct (end date was one week wrong).
- #
- # 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
- # which says
- # Members of the public are reminded to change their time to one hour in
- # advance at 2am to 3am on October 23, 2011 and one hour back at 3am to
- # 2am on February 26 next year.
- # From Ken Rylander (2011-10-24)
- # Another change to the Fiji DST end date. In the TZ database the end date for
- # Fiji DST 2012, is currently Feb 26. This has been changed to Jan 22.
- #
- # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155
- # states:
- #
- # The end of daylight saving scheduled initially for the 26th of February 2012
- # has been brought forward to the 22nd of January 2012.
- # The commencement of daylight saving will remain unchanged and start
- # on the 23rd of October, 2011.
- # From the Fiji Government Online Portal (2012-08-21) via Steffen Thorsen:
- # The Minister for Labour, Industrial Relations and Employment Mr Jone Usamate
- # today confirmed that Fiji will start daylight savings at 2 am on Sunday 21st
- # October 2012 and end at 3 am on Sunday 20th January 2013.
- # http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=6702&catid=71&Itemid=155
- # From the Fijian Government Media Center (2013-08-30) via David Wheeler:
- # Fiji will start daylight savings on Sunday 27th October, 2013 ...
- # move clocks forward by one hour from 2am
- # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-27th-OCTOBER-201.aspx
- # From Steffen Thorsen (2013-01-10):
- # Fiji will end DST on 2014-01-19 02:00:
- # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVINGS-TO-END-THIS-MONTH-%281%29.aspx
- # From Ken Rylander (2014-10-20):
- # DST will start Nov. 2 this year.
- # http://www.fiji.gov.fj/Media-Center/Press-Releases/DAYLIGHT-SAVING-STARTS-ON-SUNDAY,-NOVEMBER-2ND.aspx
- # From a government order dated 2015-08-26 and published as Legal Notice No. 77
- # in the Government of Fiji Gazette Supplement No. 24 (2015-08-28),
- # via Ken Rylander (2015-09-02):
- # the daylight saving period is 1 hour in advance of the standard time
- # commencing at 2.00 am on Sunday 1st November, 2015 and ending at
- # 3.00 am on Sunday 17th January, 2016.
- # From Paul Eggert (2015-09-01):
- # For now, guess DST from 02:00 the first Sunday in November to
- # 03:00 the third Sunday in January. Although ad hoc, it matches
- # transitions since late 2014 and seems more likely to match future
- # practice than guessing no DST.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S
- Rule Fiji 1999 2000 - Feb lastSun 3:00 0 -
- Rule Fiji 2009 only - Nov 29 2:00 1:00 S
- Rule Fiji 2010 only - Mar lastSun 3:00 0 -
- Rule Fiji 2010 2013 - Oct Sun>=21 2:00 1:00 S
- Rule Fiji 2011 only - Mar Sun>=1 3:00 0 -
- Rule Fiji 2012 2013 - Jan Sun>=18 3:00 0 -
- Rule Fiji 2014 only - Jan Sun>=18 2:00 0 -
- Rule Fiji 2014 max - Nov Sun>=1 2:00 1:00 S
- Rule Fiji 2015 max - Jan Sun>=15 3:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Fiji 11:55:44 - LMT 1915 Oct 26 # Suva
- 12:00 Fiji FJ%sT # Fiji Time
- # French Polynesia
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
- -9:00 - GAMT # Gambier Time
- Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
- -9:30 - MART # Marquesas Time
- Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
- -10:00 - TAHT # Tahiti Time
- # Clipperton (near North America) is administered from French Polynesia;
- # it is uninhabited.
- # Guam
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
- 9:39:00 - LMT 1901 # Agana
- 10:00 - GST 2000 Dec 23 # Guam
- 10:00 - ChST # Chamorro Standard Time
- Link Pacific/Guam Pacific/Saipan # N Mariana Is
- # Kiribati
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
- 12:00 - GILT # Gilbert Is Time
- Zone Pacific/Enderbury -11:24:20 - LMT 1901
- -12:00 - PHOT 1979 Oct # Phoenix Is Time
- -11:00 - PHOT 1995
- 13:00 - PHOT
- Zone Pacific/Kiritimati -10:29:20 - LMT 1901
- -10:40 - LINT 1979 Oct # Line Is Time
- -10:00 - LINT 1995
- 14:00 - LINT
- # N Mariana Is
- # See Pacific/Guam.
- # Marshall Is
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Majuro 11:24:48 - LMT 1901
- 11:00 - MHT 1969 Oct # Marshall Islands Time
- 12:00 - MHT
- Zone Pacific/Kwajalein 11:09:20 - LMT 1901
- 11:00 - MHT 1969 Oct
- -12:00 - KWAT 1993 Aug 20 # Kwajalein Time
- 12:00 - MHT
- # Micronesia
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Chuuk 10:07:08 - LMT 1901
- 10:00 - CHUT # Chuuk Time
- Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
- 11:00 - PONT # Pohnpei Time
- Zone Pacific/Kosrae 10:51:56 - LMT 1901
- 11:00 - KOST 1969 Oct # Kosrae Time
- 12:00 - KOST 1999
- 11:00 - KOST
- # Nauru
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe
- 11:30 - NRT 1942 Mar 15 # Nauru Time
- 9:00 - JST 1944 Aug 15
- 11:30 - NRT 1979 May
- 12:00 - NRT
- # New Caledonia
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule NC 1977 1978 - Dec Sun>=1 0:00 1:00 S
- Rule NC 1978 1979 - Feb 27 0:00 0 -
- Rule NC 1996 only - Dec 1 2:00s 1:00 S
- # Shanks & Pottenger say the following was at 2:00; go with IATA.
- Rule NC 1997 only - Mar 2 2:00s 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
- 11:00 NC NC%sT
- ###############################################################################
- # New Zealand
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule NZ 1927 only - Nov 6 2:00 1:00 S
- Rule NZ 1928 only - Mar 4 2:00 0 M
- Rule NZ 1928 1933 - Oct Sun>=8 2:00 0:30 S
- Rule NZ 1929 1933 - Mar Sun>=15 2:00 0 M
- Rule NZ 1934 1940 - Apr lastSun 2:00 0 M
- Rule NZ 1934 1940 - Sep lastSun 2:00 0:30 S
- Rule NZ 1946 only - Jan 1 0:00 0 S
- # Since 1957 Chatham has been 45 minutes ahead of NZ, but there's no
- # convenient single notation for the date and time of this transition
- # so we must duplicate the Rule lines.
- Rule NZ 1974 only - Nov Sun>=1 2:00s 1:00 D
- Rule Chatham 1974 only - Nov Sun>=1 2:45s 1:00 D
- Rule NZ 1975 only - Feb lastSun 2:00s 0 S
- Rule Chatham 1975 only - Feb lastSun 2:45s 0 S
- Rule NZ 1975 1988 - Oct lastSun 2:00s 1:00 D
- Rule Chatham 1975 1988 - Oct lastSun 2:45s 1:00 D
- Rule NZ 1976 1989 - Mar Sun>=1 2:00s 0 S
- Rule Chatham 1976 1989 - Mar Sun>=1 2:45s 0 S
- Rule NZ 1989 only - Oct Sun>=8 2:00s 1:00 D
- Rule Chatham 1989 only - Oct Sun>=8 2:45s 1:00 D
- Rule NZ 1990 2006 - Oct Sun>=1 2:00s 1:00 D
- Rule Chatham 1990 2006 - Oct Sun>=1 2:45s 1:00 D
- Rule NZ 1990 2007 - Mar Sun>=15 2:00s 0 S
- Rule Chatham 1990 2007 - Mar Sun>=15 2:45s 0 S
- Rule NZ 2007 max - Sep lastSun 2:00s 1:00 D
- Rule Chatham 2007 max - Sep lastSun 2:45s 1:00 D
- Rule NZ 2008 max - Apr Sun>=1 2:00s 0 S
- Rule Chatham 2008 max - Apr Sun>=1 2:45s 0 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2
- 11:30 NZ NZ%sT 1946 Jan 1
- 12:00 NZ NZ%sT
- Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2
- 12:15 - CHAST 1946 Jan 1
- 12:45 Chatham CHA%sT
- Link Pacific/Auckland Antarctica/McMurdo
- # Auckland Is
- # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers,
- # and scientific personnel have wintered
- # Campbell I
- # minor whaling stations operated 1909/1914
- # scientific station operated 1941/1995;
- # previously whalers, sealers, pastoralists, and scientific personnel wintered
- # was probably like Pacific/Auckland
- # Cook Is
- # From Shanks & Pottenger:
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Cook 1978 only - Nov 12 0:00 0:30 HS
- Rule Cook 1979 1991 - Mar Sun>=1 0:00 0 -
- Rule Cook 1979 1990 - Oct lastSun 0:00 0:30 HS
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Rarotonga -10:39:04 - LMT 1901 # Avarua
- -10:30 - CKT 1978 Nov 12 # Cook Is Time
- -10:00 Cook CK%sT
- ###############################################################################
- # Niue
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Niue -11:19:40 - LMT 1901 # Alofi
- -11:20 - NUT 1951 # Niue Time
- -11:30 - NUT 1978 Oct 1
- -11:00 - NUT
- # Norfolk
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
- 11:12 - NMT 1951 # Norfolk Mean Time
- 11:30 - NFT 1974 Oct 27 02:00 # Norfolk T.
- 11:30 1:00 NFST 1975 Mar 2 02:00
- 11:30 - NFT 2015 Oct 4 02:00
- 11:00 - NFT
- # Palau (Belau)
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
- 9:00 - PWT # Palau Time
- # Papua New Guinea
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
- 9:48:32 - PMMT 1895 # Port Moresby Mean Time
- 10:00 - PGT # Papua New Guinea Time
- #
- # From Paul Eggert (2014-10-13):
- # Base the Bougainville entry on the Arawa-Kieta region, which appears to have
- # the most people even though it was devastated in the Bougainville Civil War.
- #
- # Although Shanks gives 1942-03-15 / 1943-11-01 for JST, these dates
- # are apparently rough guesswork from the starts of military campaigns.
- # The World War II entries below are instead based on Arawa-Kieta.
- # The Japanese occupied Kieta in July 1942,
- # according to the Pacific War Online Encyclopedia
- # http://pwencycl.kgbudge.com/B/o/Bougainville.htm
- # and seem to have controlled it until their 1945-08-21 surrender.
- #
- # The Autonomous Region of Bougainville plans to switch from UTC+10 to UTC+11
- # on 2014-12-28 at 02:00. They call UTC+11 "Bougainville Standard Time";
- # abbreviate this as BST. See:
- # http://www.bougainville24.com/bougainville-issues/bougainville-gets-own-timezone/
- #
- Zone Pacific/Bougainville 10:22:16 - LMT 1880
- 9:48:32 - PMMT 1895
- 10:00 - PGT 1942 Jul
- 9:00 - JST 1945 Aug 21
- 10:00 - PGT 2014 Dec 28 2:00
- 11:00 - BST
- # Pitcairn
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Pitcairn -8:40:20 - LMT 1901 # Adamstown
- -8:30 - PNT 1998 Apr 27 0:00
- -8:00 - PST # Pitcairn Standard Time
- # American Samoa
- Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
- -11:22:48 - LMT 1911
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
- -11:00 - SST # S=Samoa
- Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
- # Samoa (formerly and also known as Western Samoa)
- # From Steffen Thorsen (2009-10-16):
- # We have been in contact with the government of Samoa again, and received
- # the following info:
- #
- # "Cabinet has now approved Daylight Saving to be effected next year
- # commencing from the last Sunday of September 2010 and conclude first
- # Sunday of April 2011."
- #
- # Background info:
- # http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
- #
- # Samoa's Daylight Saving Time Act 2009 is available here, but does not
- # contain any dates:
- # http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf
- # From Laupue Raymond Hughes (2010-10-07):
- # Please see
- # http://www.mcil.gov.ws
- # the Ministry of Commerce, Industry and Labour (sideframe) "Last Sunday
- # September 2010 (26/09/10) - adjust clocks forward from 12:00 midnight
- # to 01:00am and First Sunday April 2011 (03/04/11) - adjust clocks
- # backwards from 1:00am to 12:00am"
- # From Laupue Raymond Hughes (2011-03-07):
- # [http://www.mcil.gov.ws/ftcd/daylight_saving_2011.pdf]
- #
- # ... when the standard time strikes the hour of four o'clock (4.00am
- # or 0400 Hours) on the 2nd April 2011, then all instruments used to
- # measure standard time are to be adjusted/changed to three o'clock
- # (3:00am or 0300Hrs).
- # From David Zülke (2011-05-09):
- # Subject: Samoa to move timezone from east to west of international date line
- #
- # http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963
- # From Paul Eggert (2014-06-27):
- # The International Date Line Act 2011
- # http://www.parliament.gov.ws/images/ACTS/International_Date_Line_Act__2011_-_Eng.pdf
- # changed Samoa from UTC-11 to UTC+13, effective "12 o'clock midnight, on
- # Thursday 29th December 2011". The International Date Line was adjusted
- # accordingly.
- # From Laupue Raymond Hughes (2011-09-02):
- # http://www.mcil.gov.ws/mcil_publications.html
- #
- # here is the official website publication for Samoa DST and dateline change
- #
- # DST
- # Year End Time Start Time
- # 2011 - - - - - - 24 September 3:00am to 4:00am
- # 2012 01 April 4:00am to 3:00am - - - - - -
- #
- # Dateline Change skip Friday 30th Dec 2011
- # Thursday 29th December 2011 23:59:59 Hours
- # Saturday 31st December 2011 00:00:00 Hours
- #
- # From Nicholas Pereira (2012-09-10):
- # Daylight Saving Time commences on Sunday 30th September 2012 and
- # ends on Sunday 7th of April 2013....
- # http://www.mcil.gov.ws/mcil_publications.html
- #
- # From Paul Eggert (2014-07-08):
- # That web page currently lists transitions for 2012/3 and 2013/4.
- # Assume the pattern instituted in 2012 will continue indefinitely.
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule WS 2010 only - Sep lastSun 0:00 1 D
- Rule WS 2011 only - Apr Sat>=1 4:00 0 S
- Rule WS 2011 only - Sep lastSat 3:00 1 D
- Rule WS 2012 max - Apr Sun>=1 4:00 0 S
- Rule WS 2012 max - Sep lastSun 3:00 1 D
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
- -11:26:56 - LMT 1911
- -11:30 - WSST 1950
- -11:00 WS S%sT 2011 Dec 29 24:00 # S=Samoa
- 13:00 WS WS%sT
- # Solomon Is
- # excludes Bougainville, for which see Papua New Guinea
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
- 11:00 - SBT # Solomon Is Time
- # Tokelau Is
- #
- # From Gwillim Law (2011-12-29)
- # A correspondent informed me that Tokelau, like Samoa, will be skipping
- # December 31 this year ...
- #
- # From Steffen Thorsen (2012-07-25)
- # ... we double checked by calling hotels and offices based in Tokelau asking
- # about the time there, and they all told a time that agrees with UTC+13....
- # Shanks says UTC-10 from 1901 [but] ... there is a good chance the change
- # actually was to UTC-11 back then.
- #
- # From Paul Eggert (2012-07-25)
- # A Google Books snippet of Appendix to the Journals of the House of
- # Representatives of New Zealand, Session 1948,
- # <http://books.google.com/books?id=ZaVCAQAAIAAJ>, page 65, says Tokelau
- # was "11 hours slow on G.M.T." Go with Thorsen and assume Shanks & Pottenger
- # are off by an hour starting in 1901.
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Fakaofo -11:24:56 - LMT 1901
- -11:00 - TKT 2011 Dec 30 # Tokelau Time
- 13:00 - TKT
- # Tonga
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Tonga 1999 only - Oct 7 2:00s 1:00 S
- Rule Tonga 2000 only - Mar 19 2:00s 0 -
- Rule Tonga 2000 2001 - Nov Sun>=1 2:00 1:00 S
- Rule Tonga 2001 2002 - Jan lastSun 2:00 0 -
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Tongatapu 12:19:20 - LMT 1901
- 12:20 - TOT 1941 # Tonga Time
- 13:00 - TOT 1999
- 13:00 Tonga TO%sT
- # Tuvalu
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Funafuti 11:56:52 - LMT 1901
- 12:00 - TVT # Tuvalu Time
- # US minor outlying islands
- # Howland, Baker
- # Howland was mined for guano by American companies 1857-1878 and British
- # 1886-1891; Baker was similar but exact dates are not known.
- # Inhabited by civilians 1935-1942; U.S. military bases 1943-1944;
- # uninhabited thereafter.
- # Howland observed Hawaii Standard Time (UT-10:30) in 1937;
- # see page 206 of Elgen M. Long and Marie K. Long,
- # Amelia Earhart: the Mystery Solved, Simon & Schuster (2000).
- # So most likely Howland and Baker observed Hawaii Time from 1935
- # until they were abandoned after the war.
- # Jarvis
- # Mined for guano by American companies 1857-1879 and British 1883?-1891?.
- # Inhabited by civilians 1935-1942; IGY scientific base 1957-1958;
- # uninhabited thereafter.
- # no information; was probably like Pacific/Kiritimati
- # Johnston
- #
- # From Paul Eggert (2014-03-11):
- # Sometimes Johnston kept Hawaii time, and sometimes it was an hour behind.
- # Details are uncertain. We have no data for Johnston after 1970, so
- # treat it like Hawaii for now.
- #
- # In his memoirs of June 6th to October 4, 1945
- # <http://www.315bw.org/Herb_Bach.htm> (2005), Herbert C. Bach writes,
- # "We started our letdown to Kwajalein Atoll and landed there at 5:00 AM
- # Johnston time, 1:30 AM Kwajalein time." This was in June 1945, and
- # confirms that Johnston kept the same time as Honolulu in summer 1945.
- #
- # From Lyle McElhaney (2014-03-11):
- # [W]hen JI was being used for that [atomic bomb] testing, the time being used
- # was not Hawaiian time but rather the same time being used on the ships,
- # which had a GMT offset of -11 hours. This apparently applied to at least the
- # time from Operation Newsreel (Hardtack I/Teak shot, 1958-08-01) to the last
- # Operation Fishbowl shot (Tightrope, 1962-11-04).... [See] Herman Hoerlin,
- # "The United States High-Altitude Test Experience: A Review Emphasizing the
- # Impact on the Environment", Los Alamos LA-6405, Oct 1976.
- # http://www.fas.org/sgp/othergov/doe/lanl/docs1/00322994.pdf
- # See the table on page 4 where he lists GMT and local times for the tests; a
- # footnote for the JI tests reads that local time is "JI time = Hawaii Time
- # Minus One Hour".
- #
- # See 'northamerica' for Pacific/Johnston.
- # Kingman
- # uninhabited
- # Midway
- # See Pacific/Pago_Pago.
- # Palmyra
- # uninhabited since World War II; was probably like Pacific/Kiritimati
- # Wake
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Wake 11:06:28 - LMT 1901
- 12:00 - WAKT # Wake Time
- # Vanuatu
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Vanuatu 1983 only - Sep 25 0:00 1:00 S
- Rule Vanuatu 1984 1991 - Mar Sun>=23 0:00 0 -
- Rule Vanuatu 1984 only - Oct 23 0:00 1:00 S
- Rule Vanuatu 1985 1991 - Sep Sun>=23 0:00 1:00 S
- Rule Vanuatu 1992 1993 - Jan Sun>=23 0:00 0 -
- Rule Vanuatu 1992 only - Oct Sun>=23 0:00 1:00 S
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
- 11:00 Vanuatu VU%sT # Vanuatu Time
- # Wallis and Futuna
- # Zone NAME GMTOFF RULES FORMAT [UNTIL]
- Zone Pacific/Wallis 12:15:20 - LMT 1901
- 12:00 - WFT # Wallis & Futuna Time
- ###############################################################################
- # NOTES
- # This file is by no means authoritative; if you think you know better,
- # go ahead and edit the file (and please send any changes to
- # tz@iana.org for general use in the future). For more, please see
- # the file CONTRIBUTING in the tz distribution.
- # From Paul Eggert (2014-10-31):
- #
- # Unless otherwise specified, the source for data through 1990 is:
- # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
- # San Diego: ACS Publications, Inc. (2003).
- # Unfortunately this book contains many errors and cites no sources.
- #
- # Gwillim Law writes that a good source
- # for recent time zone data is the International Air Transport
- # Association's Standard Schedules Information Manual (IATA SSIM),
- # published semiannually. Law sent in several helpful summaries
- # of the IATA's data after 1990. Except where otherwise noted,
- # IATA SSIM is the source for entries after 1990.
- #
- # Another source occasionally used is Edward W. Whitman, World Time Differences,
- # Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated), which
- # I found in the UCLA library.
- #
- # For data circa 1899, a common source is:
- # Milne J. Civil time. Geogr J. 1899 Feb;13(2):173-94.
- # http://www.jstor.org/stable/1774359
- #
- # A reliable and entertaining source about time zones is
- # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997).
- #
- # I invented the abbreviations marked '*' in the following table;
- # the rest are from earlier versions of this file, or from other sources.
- # Corrections are welcome!
- # std dst
- # LMT Local Mean Time
- # 8:00 AWST AWDT Western Australia
- # 8:45 ACWST ACWDT Central Western Australia*
- # 9:00 JST Japan
- # 9:30 ACST ACDT Central Australia
- # 10:00 AEST AEDT Eastern Australia
- # 10:00 ChST Chamorro
- # 10:30 LHST LHDT Lord Howe*
- # 11:00 BST Bougainville*
- # 11:30 NZMT NZST New Zealand through 1945
- # 12:00 NZST NZDT New Zealand 1946-present
- # 12:15 CHAST Chatham through 1945*
- # 12:45 CHAST CHADT Chatham 1946-present*
- # 13:00 WSST WSDT (western) Samoa 2011-present*
- # -11:30 WSST Western Samoa through 1950*
- # -11:00 SST Samoa
- # -10:00 HST Hawaii
- # - 8:00 PST Pitcairn*
- #
- # See the 'northamerica' file for Hawaii.
- # See the 'southamerica' file for Easter I and the Galápagos Is.
- ###############################################################################
- # Australia
- # From Paul Eggert (2014-06-30):
- # Daylight saving time has long been controversial in Australia, pitting
- # region against region, rural against urban, and local against global.
- # For example, in her review of Graeme Davison's _The Unforgiving
- # Minute: how Australians learned to tell the time_ (1993), Perth native
- # Phillipa J Martyr wrote, "The section entitled 'Saving Daylight' was
- # very informative, but was (as can, sadly, only be expected from a
- # Melbourne-based study) replete with the usual chuckleheaded
- # Queenslanders and straw-chewing yokels from the West prattling fables
- # about fading curtains and crazed farm animals."
- # Electronic Journal of Australian and New Zealand History (1997-03-03)
- # http://www.jcu.edu.au/aff/history/reviews/davison.htm
- # From Paul Eggert (2005-12-08):
- # Implementation Dates of Daylight Saving Time within Australia
- # http://www.bom.gov.au/climate/averages/tables/dst_times.shtml
- # summarizes daylight saving issues in Australia.
- # From Arthur David Olson (2005-12-12):
- # Lawlink NSW:Daylight Saving in New South Wales
- # http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/community_relations_daylight_saving
- # covers New South Wales in particular.
- # From John Mackin (1991-03-06):
- # We in Australia have _never_ referred to DST as 'daylight' time.
- # It is called 'summer' time. Now by a happy coincidence, 'summer'
- # and 'standard' happen to start with the same letter; hence, the
- # abbreviation does _not_ change...
- # The legislation does not actually define abbreviations, at least
- # in this State, but the abbreviation is just commonly taken to be the
- # initials of the phrase, and the legislation here uniformly uses
- # the phrase 'summer time' and does not use the phrase 'daylight
- # time'.
- # Announcers on the Commonwealth radio network, the ABC (for Australian
- # Broadcasting Commission), use the phrases 'Eastern Standard Time'
- # or 'Eastern Summer Time'. (Note, though, that as I say in the
- # current australasia file, there is really no such thing.) Announcers
- # on its overseas service, Radio Australia, use the same phrases
- # prefixed by the word 'Australian' when referring to local times;
- # time announcements on that service, naturally enough, are made in UTC.
- # From Paul Eggert (2014-06-30):
- #
- # Inspired by Mackin's remarks quoted above, earlier versions of this
- # file used "EST" for both Eastern Standard Time and Eastern Summer
- # Time in Australia, and similarly for "CST", "CWST", and "WST".
- # However, these abbreviations were confusing and were not common
- # practice among Australians, and there were justifiable complaints
- # about them, so I attempted to survey current Australian usage.
- # For the tz database, the full English phrase is not that important;
- # what matters is the abbreviation. It's difficult to survey the web
- # directly for abbreviation usage, as there are so many false hits for
- # strings like "EST" and "EDT", so I looked for pages that defined an
- # abbreviation for eastern or central DST in Australia, and got the
- # following numbers of unique hits for the listed Google queries:
- #
- # 10 "Eastern Daylight Time AEST" site:au [some are false hits]
- # 10 "Eastern Summer Time AEST" site:au
- # 10 "Summer Time AEDT" site:au
- # 13 "EDST Eastern Daylight Saving Time" site:au
- # 18 "Summer Time ESST" site:au
- # 28 "Eastern Daylight Saving Time EDST" site:au
- # 39 "EDT Eastern Daylight Time" site:au [some are false hits]
- # 53 "Eastern Daylight Time EDT" site:au [some are false hits]
- # 54 "AEDT Australian Eastern Daylight Time" site:au
- # 182 "Eastern Daylight Time AEDT" site:au
- #
- # 17 "Central Daylight Time CDT" site:au [some are false hits]
- # 46 "Central Daylight Time ACDT" site:au
- #
- # I tried several other variants (e.g., "Eastern Summer Time EST") but
- # they all returned fewer than 10 unique hits. I also looked for pages
- # mentioning both "western standard time" and an abbreviation, since
- # there is no WST in the US to generate false hits, and found:
- #
- # 156 "western standard time" AWST site:au
- # 226 "western standard time" WST site:au
- #
- # I then surveyed the top ten newspapers in Australia by circulation as
- # listed in Wikipedia, using Google queries like "AEDT site:heraldsun.com.au"
- # and obtaining estimated counts from the initial page of search results.
- # All ten papers greatly preferred "AEDT" to "EDT". The papers
- # surveyed were the Herald Sun, The Daily Telegraph, The Courier-Mail,
- # The Sydney Morning Herald, The West Australian, The Age, The Advertiser,
- # The Australian, The Financial Review, and The Herald (Newcastle).
- #
- # I also searched for historical usage, to see whether abbreviations
- # like "AEDT" are new. A Trove search <http://trove.nla.gov.au/>
- # found only one newspaper (The Canberra Times) with a house style
- # dating back to the 1970s, I expect because other newspapers weren't
- # fully indexed. The Canberra Times strongly preferred abbreviations
- # like "AEDT". The first occurrence of "AEDT" was a World Weather
- # column (1971-11-17, page 24), and of "ACDT" was a Scoreboard column
- # (1993-01-24, p 16). The style was the typical usage but was not
- # strictly enforced; for example, "Welcome to the twilight zones ..."
- # (1994-10-29, p 1) uses the abbreviations AEST/AEDT, CST/CDT, and
- # WST, and goes on to say, "The confusion and frustration some feel
- # about the lack of uniformity among Australia's six states and two
- # territories has prompted one group to form its very own political
- # party -- the Sydney-based Daylight Saving Extension Party."
- #
- # I also surveyed federal government sources. They did not agree:
- #
- # The Australian Government (2014-03-26)
- # http://australia.gov.au/about-australia/our-country/time
- # (This document was produced by the Department of Finance.)
- # AEST ACST AWST AEDT ACDT
- #
- # Bureau of Meteorology (2012-11-08)
- # http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml
- # EST CST WST EDT CDT
- #
- # Civil Aviation Safety Authority (undated)
- # http://services.casa.gov.au/outnback/inc/pages/episode3/episode-3_time_zones.shtml
- # EST CST WST (no abbreviations given for DST)
- #
- # Geoscience Australia (2011-11-24)
- # http://www.ga.gov.au/geodesy/astro/sunrise.jsp
- # AEST ACST AWST AEDT ACDT
- #
- # Parliamentary Library (2008-11-10)
- # http://www.aph.gov.au/binaries/library/pubs/rp/2008-09/09rp14.pdf
- # EST CST WST preferred for standard time; AEST AEDT ACST ACDT also used
- #
- # The Transport Safety Bureau has an extensive series of accident reports,
- # and investigators seem to use whatever abbreviation they like.
- # Googling site:atsb.gov.au found the following number of unique hits:
- # 311 "ESuT", 195 "EDT", 26 "AEDT", 83 "CSuT", 46 "CDT".
- # "_SuT" tended to appear in older reports, and "A_DT" tended to
- # appear in reports of events with international implications.
- #
- # From the above it appears that there is a working consensus in
- # Australia to use trailing "DT" for daylight saving time; although
- # some sources use trailing "SST" or "ST" or "SuT" they are by far in
- # the minority. The case for leading "A" is weaker, but since it
- # seems to be preferred in the overall web and is preferred in all
- # the leading newspaper websites and in many government departments,
- # it has a stronger case than omitting the leading "A". The current
- # version of the database therefore uses abbreviations like "AEST" and
- # "AEDT" for Australian time zones.
- # From Paul Eggert (1995-12-19):
- # Shanks & Pottenger report 2:00 for all autumn changes in Australia and NZ.
- # Mark Prior writes that his newspaper
- # reports that NSW's fall 1995 change will occur at 2:00,
- # but Robert Elz says it's been 3:00 in Victoria since 1970
- # and perhaps the newspaper's '2:00' is referring to standard time.
- # For now we'll continue to assume 2:00s for changes since 1960.
- # From Eric Ulevik (1998-01-05):
- #
- # Here are some URLs to Australian time legislation. These URLs are stable,
- # and should probably be included in the data file. There are probably more
- # relevant entries in this database.
- #
- # NSW (including LHI and Broken Hill):
- # Standard Time Act 1987 (updated 1995-04-04)
- # http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html
- # ACT
- # Standard Time and Summer Time Act 1972
- # http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html
- # SA
- # Standard Time Act, 1898
- # http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html
- # From David Grosz (2005-06-13):
- # It was announced last week that Daylight Saving would be extended by
- # one week next year to allow for the 2006 Commonwealth Games.
- # Daylight Saving is now to end for next year only on the first Sunday
- # in April instead of the last Sunday in March.
- #
- # From Gwillim Law (2005-06-14):
- # I did some Googling and found that all of those states (and territory) plan
- # to extend DST together in 2006.
- # ACT: http://www.cmd.act.gov.au/mediareleases/fileread.cfm?file=86.txt
- # New South Wales: http://www.thecouriermail.news.com.au/common/story_page/0,5936,15538869%255E1702,00.html
- # South Australia: http://www.news.com.au/story/0,10117,15555031-1246,00.html
- # Tasmania: http://www.media.tas.gov.au/release.php?id=14772
- # Victoria: I wasn't able to find anything separate, but the other articles
- # allude to it.
- # But not Queensland
- # http://www.news.com.au/story/0,10117,15564030-1248,00.html
- # Northern Territory
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # The NORTHERN TERRITORY.. [ Courtesy N.T. Dept of the Chief Minister ]
- # # [ Nov 1990 ]
- # # N.T. have never utilised any DST due to sub-tropical/tropical location.
- # ...
- # Zone Australia/North 9:30 - CST
- # From Bradley White (1991-03-04):
- # A recent excerpt from an Australian newspaper...
- # the Northern Territory do[es] not have daylight saving.
- # Western Australia
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # The state of WESTERN AUSTRALIA.. [ Courtesy W.A. dept Premier+Cabinet ]
- # # [ Nov 1990 ]
- # # W.A. suffers from a great deal of public and political opposition to
- # # DST in principle. A bill is brought before parliament in most years, but
- # # usually defeated either in the upper house, or in party caucus
- # # before reaching parliament.
- # ...
- # Zone Australia/West 8:00 AW %sST
- # ...
- # Rule AW 1974 only - Oct lastSun 2:00 1:00 D
- # Rule AW 1975 only - Mar Sun>=1 3:00 0 W
- # Rule AW 1983 only - Oct lastSun 2:00 1:00 D
- # Rule AW 1984 only - Mar Sun>=1 3:00 0 W
- # From Bradley White (1991-03-04):
- # A recent excerpt from an Australian newspaper...
- # Western Australia...do[es] not have daylight saving.
- # From John D. Newman via Bradley White (1991-11-02):
- # Western Australia is still on "winter time". Some DH in Sydney
- # rang me at home a few days ago at 6.00am. (He had just arrived at
- # work at 9.00am.)
- # W.A. is switching to Summer Time on Nov 17th just to confuse
- # everybody again.
- # From Arthur David Olson (1992-03-08):
- # The 1992 ending date used in the rules is a best guess;
- # it matches what was used in the past.
- # The Australian Bureau of Meteorology FAQ
- # http://www.bom.gov.au/faq/faqgen.htm
- # (1999-09-27) writes that Giles Meteorological Station uses
- # South Australian time even though it's located in Western Australia.
- # Queensland
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # The state of QUEENSLAND.. [ Courtesy Qld. Dept Premier Econ&Trade Devel ]
- # # [ Dec 1990 ]
- # ...
- # Zone Australia/Queensland 10:00 AQ %sST
- # ...
- # Rule AQ 1971 only - Oct lastSun 2:00 1:00 D
- # Rule AQ 1972 only - Feb lastSun 3:00 0 E
- # Rule AQ 1989 max - Oct lastSun 2:00 1:00 D
- # Rule AQ 1990 max - Mar Sun>=1 3:00 0 E
- # From Bradley White (1989-12-24):
- # "Australia/Queensland" now observes daylight time (i.e. from
- # October 1989).
- # From Bradley White (1991-03-04):
- # A recent excerpt from an Australian newspaper...
- # ...Queensland...[has] agreed to end daylight saving
- # at 3am tomorrow (March 3)...
- # From John Mackin (1991-03-06):
- # I can certainly confirm for my part that Daylight Saving in NSW did in fact
- # end on Sunday, 3 March. I don't know at what hour, though. (It surprised
- # me.)
- # From Bradley White (1992-03-08):
- # ...there was recently a referendum in Queensland which resulted
- # in the experimental daylight saving system being abandoned. So, ...
- # ...
- # Rule QLD 1989 1991 - Oct lastSun 2:00 1:00 D
- # Rule QLD 1990 1992 - Mar Sun>=1 3:00 0 S
- # ...
- # From Arthur David Olson (1992-03-08):
- # The chosen rules the union of the 1971/1972 change and the 1989-1992 changes.
- # From Christopher Hunt (2006-11-21), after an advance warning
- # from Jesper Nørgaard Welen (2006-11-01):
- # WA are trialing DST for three years.
- # http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721200088DF1/$File/Bill175-1B.pdf
- # From Rives McDow (2002-04-09):
- # The most interesting region I have found consists of three towns on the
- # southern coast.... South Australia observes daylight saving time; Western
- # Australia does not. The two states are one and a half hours apart. The
- # residents decided to forget about this nonsense of changing the clock so
- # much and set the local time 20 hours and 45 minutes from the
- # international date line, or right in the middle of the time of South
- # Australia and Western Australia....
- #
- # From Paul Eggert (2002-04-09):
- # This is confirmed by the section entitled
- # "What's the deal with time zones???" in
- # http://www.earthsci.unimelb.edu.au/~awatkins/null.html
- #
- # From Alex Livingston (2006-12-07):
- # ... it was just on four years ago that I drove along the Eyre Highway,
- # which passes through eastern Western Australia close to the southern
- # coast of the continent.
- #
- # I paid particular attention to the time kept there. There can be no
- # dispute that UTC+08:45 was considered "the time" from the border
- # village just inside the border with South Australia to as far west
- # as just east of Caiguna. There can also be no dispute that Eucla is
- # the largest population centre in this zone....
- #
- # Now that Western Australia is observing daylight saving, the
- # question arose whether this part of the state would follow suit. I
- # just called the border village and confirmed that indeed they have,
- # meaning that they are now observing UTC+09:45.
- #
- # (2006-12-09):
- # I personally doubt that either experimentation with daylight saving
- # in WA or its introduction in SA had anything to do with the genesis
- # of this time zone. My hunch is that it's been around since well
- # before 1975. I remember seeing it noted on road maps decades ago.
- # From Paul Eggert (2006-12-15):
- # For lack of better info, assume the tradition dates back to the
- # introduction of standard time in 1895.
- # southeast Australia
- #
- # From Paul Eggert (2007-07-23):
- # Starting autumn 2008 Victoria, NSW, South Australia, Tasmania and the ACT
- # end DST the first Sunday in April and start DST the first Sunday in October.
- # http://www.theage.com.au/news/national/daylight-savings-to-span-six-months/2007/06/27/1182623966703.html
- # South Australia
- # From Bradley White (1991-03-04):
- # A recent excerpt from an Australian newspaper...
- # ...South Australia...[has] agreed to end daylight saving
- # at 3am tomorrow (March 3)...
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # The state of SOUTH AUSTRALIA....[ Courtesy of S.A. Dept of Labour ]
- # # [ Nov 1990 ]
- # ...
- # Zone Australia/South 9:30 AS %sST
- # ...
- # Rule AS 1971 max - Oct lastSun 2:00 1:00 D
- # Rule AS 1972 1985 - Mar Sun>=1 3:00 0 C
- # Rule AS 1986 1990 - Mar Sun>=15 3:00 0 C
- # Rule AS 1991 max - Mar Sun>=1 3:00 0 C
- # From Bradley White (1992-03-11):
- # Recent correspondence with a friend in Adelaide
- # contained the following exchange: "Due to the Adelaide Festival,
- # South Australia delays setting back our clocks for a few weeks."
- # From Robert Elz (1992-03-13):
- # I heard that apparently (or at least, it appears that)
- # South Aus will have an extra 3 weeks daylight saving every even
- # numbered year (from 1990). That's when the Adelaide Festival
- # is on...
- # From Robert Elz (1992-03-16, 00:57:07 +1000):
- # DST didn't end in Adelaide today (yesterday)....
- # But whether it's "4th Sunday" or "2nd last Sunday" I have no idea whatever...
- # (it's just as likely to be "the Sunday we pick for this year"...).
- # From Bradley White (1994-04-11):
- # If Sun, 15 March, 1992 was at +1030 as kre asserts, but yet Sun, 20 March,
- # 1994 was at +0930 as John Connolly's customer seems to assert, then I can
- # only conclude that the actual rule is more complicated....
- # From John Warburton (1994-10-07):
- # The new Daylight Savings dates for South Australia ...
- # was gazetted in the Government Hansard on Sep 26 1994....
- # start on last Sunday in October and end in last sunday in March.
- # From Paul Eggert (2007-07-23):
- # See "southeast Australia" above for 2008 and later.
- # Tasmania
- # The rules for 1967 through 1991 were reported by George Shepherd
- # via Simon Woodhead via Robert Elz (1991-03-06):
- # # The state of TASMANIA.. [Courtesy Tasmanian Dept of Premier + Cabinet ]
- # # [ Nov 1990 ]
- # From Bill Hart via Guy Harris (1991-10-10):
- # Oh yes, the new daylight savings rules are uniquely tasmanian, we have
- # 6 weeks a year now when we are out of sync with the rest of Australia
- # (but nothing new about that).
- # From Alex Livingston (1999-10-04):
- # I heard on the ABC (Australian Broadcasting Corporation) radio news on the
- # (long) weekend that Tasmania, which usually goes its own way in this regard,
- # has decided to join with most of NSW, the ACT, and most of Victoria
- # (Australia) and start daylight saving on the last Sunday in August in 2000
- # instead of the first Sunday in October.
- # Sim Alam (2000-07-03) reported a legal citation for the 2000/2001 rules:
- # http://www.thelaw.tas.gov.au/fragview/42++1968+GS3A@EN+2000070300
- # From Paul Eggert (2007-07-23):
- # See "southeast Australia" above for 2008 and later.
- # Victoria
- # The rules for 1971 through 1991 were reported by George Shepherd
- # via Simon Woodhead via Robert Elz (1991-03-06):
- # # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ]
- # # [ Nov 1990 ]
- # From Scott Harrington (2001-08-29):
- # On KQED's "City Arts and Lectures" program last night I heard an
- # interesting story about daylight savings time. Dr. John Heilbron was
- # discussing his book "The Sun in the Church: Cathedrals as Solar
- # Observatories"[1], and in particular the Shrine of Remembrance[2] located
- # in Melbourne, Australia.
- #
- # Apparently the shrine's main purpose is a beam of sunlight which
- # illuminates a special spot on the floor at the 11th hour of the 11th day
- # of the 11th month (Remembrance Day) every year in memory of Australia's
- # fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time,
- # you will indeed see the sunbeam illuminate the special spot at the
- # expected time.
- #
- # However, that is only because of some special mirror contraption that had
- # to be employed, since due to daylight savings time, the true solar time of
- # the remembrance moment occurs one hour later (or earlier?). Perhaps
- # someone with more information on this jury-rig can tell us more.
- #
- # [1] http://www.hup.harvard.edu/catalog/HEISUN.html
- # [2] http://www.shrine.org.au
- # From Paul Eggert (2007-07-23):
- # See "southeast Australia" above for 2008 and later.
- # New South Wales
- # From Arthur David Olson:
- # New South Wales and subjurisdictions have their own ideas of a fun time.
- # Based on law library research by John Mackin,
- # who notes:
- # In Australia, time is not legislated federally, but rather by the
- # individual states. Thus, while such terms as "Eastern Standard Time"
- # [I mean, of course, Australian EST, not any other kind] are in common
- # use, _they have NO REAL MEANING_, as they are not defined in the
- # legislation. This is very important to understand.
- # I have researched New South Wales time only...
- # From Eric Ulevik (1999-05-26):
- # DST will start in NSW on the last Sunday of August, rather than the usual
- # October in 2000. See: Matthew Moore,
- # Two months more daylight saving, Sydney Morning Herald (1999-05-26).
- # http://www.smh.com.au/news/9905/26/pageone/pageone4.html
- # From Paul Eggert (1999-09-27):
- # See the following official NSW source:
- # Daylight Saving in New South Wales.
- # http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ
- #
- # Narrabri Shire (NSW) council has announced it will ignore the extension of
- # daylight saving next year. See:
- # Narrabri Council to ignore daylight saving
- # http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm
- # (1999-07-22). For now, we'll wait to see if this really happens.
- #
- # Victoria will following NSW. See:
- # Vic to extend daylight saving (1999-07-28)
- # http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm
- #
- # However, South Australia rejected the DST request. See:
- # South Australia rejects Olympics daylight savings request (1999-07-19)
- # http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm
- #
- # Queensland also will not observe DST for the Olympics. See:
- # Qld says no to daylight savings for Olympics
- # http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm
- # (1999-06-01), which quotes Queensland Premier Peter Beattie as saying
- # "Look you've got to remember in my family when this came up last time
- # I voted for it, my wife voted against it and she said to me it's all very
- # well for you, you don't have to worry about getting the children out of
- # bed, getting them to school, getting them to sleep at night.
- # I've been through all this argument domestically...my wife rules."
- #
- # Broken Hill will stick with South Australian time in 2000. See:
- # Broken Hill to be behind the times (1999-07-21)
- # http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm
- # IATA SSIM (1998-09) says that the spring 2000 change for Australian
- # Capital Territory, New South Wales except Lord Howe Island and Broken
- # Hill, and Victoria will be August 27, presumably due to the Sydney Olympics.
- # From Eric Ulevik, referring to Sydney's Sun Herald (2000-08-13), page 29:
- # The Queensland Premier Peter Beattie is encouraging northern NSW
- # towns to use Queensland time.
- # From Paul Eggert (2007-07-23):
- # See "southeast Australia" above for 2008 and later.
- # Yancowinna
- # From John Mackin (1989-01-04):
- # 'Broken Hill' means the County of Yancowinna.
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # YANCOWINNA.. [ Confirmation courtesy of Broken Hill Postmaster ]
- # # [ Dec 1990 ]
- # ...
- # # Yancowinna uses Central Standard Time, despite [its] location on the
- # # New South Wales side of the S.A. border. Most business and social dealings
- # # are with CST zones, therefore CST is legislated by local government
- # # although the switch to Summer Time occurs in line with N.S.W. There have
- # # been years when this did not apply, but the historical data is not
- # # presently available.
- # Zone Australia/Yancowinna 9:30 AY %sST
- # ...
- # Rule AY 1971 1985 - Oct lastSun 2:00 1:00 D
- # Rule AY 1972 only - Feb lastSun 3:00 0 C
- # [followed by other Rules]
- # Lord Howe Island
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # LHI... [ Courtesy of Pauline Van Winsen ]
- # [ Dec 1990 ]
- # Lord Howe Island is located off the New South Wales coast, and is half an
- # hour ahead of NSW time.
- # From James Lonergan, Secretary, Lord Howe Island Board (2000-01-27):
- # Lord Howe Island summer time in 2000/2001 will commence on the same
- # date as the rest of NSW (i.e. 2000-08-27). For your information the
- # Lord Howe Island Board (controlling authority for the Island) is
- # seeking the community's views on various options for summer time
- # arrangements on the Island, e.g. advance clocks by 1 full hour
- # instead of only 30 minutes. [Dependent] on the wishes of residents
- # the Board may approach the NSW government to change the existing
- # arrangements. The starting date for summer time on the Island will
- # however always coincide with the rest of NSW.
- # From James Lonergan, Secretary, Lord Howe Island Board (2000-10-25):
- # Lord Howe Island advances clocks by 30 minutes during DST in NSW and retards
- # clocks by 30 minutes when DST finishes. Since DST was most recently
- # introduced in NSW, the "changeover" time on the Island has been 02:00 as
- # shown on clocks on LHI. I guess this means that for 30 minutes at the start
- # of DST, LHI is actually 1 hour ahead of the rest of NSW.
- # From Paul Eggert (2006-03-22):
- # For Lord Howe dates we use Shanks & Pottenger through 1989, and
- # Lonergan thereafter. For times we use Lonergan.
- # From Paul Eggert (2007-07-23):
- # See "southeast Australia" above for 2008 and later.
- # From Steffen Thorsen (2009-04-28):
- # According to the official press release, South Australia's extended daylight
- # saving period will continue with the same rules as used during the 2008-2009
- # summer (southern hemisphere).
- #
- # From
- # http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf
- # The extended daylight saving period that South Australia has been trialling
- # for over the last year is now set to be ongoing.
- # Daylight saving will continue to start on the first Sunday in October each
- # year and finish on the first Sunday in April the following year.
- # Industrial Relations Minister, Paul Caica, says this provides South Australia
- # with a consistent half hour time difference with NSW, Victoria, Tasmania and
- # the ACT for all 52 weeks of the year...
- #
- # We have a wrap-up here:
- # http://www.timeanddate.com/news/time/south-australia-extends-dst.html
- ###############################################################################
- # New Zealand
- # From Mark Davies (1990-10-03):
- # the 1989/90 year was a trial of an extended "daylight saving" period.
- # This trial was deemed successful and the extended period adopted for
- # subsequent years (with the addition of a further week at the start).
- # source - phone call to Ministry of Internal Affairs Head Office.
- # From George Shepherd via Simon Woodhead via Robert Elz (1991-03-06):
- # # The Country of New Zealand (Australia's east island -) Gee they hate that!
- # # or is Australia the west island of N.Z.
- # # [ courtesy of Geoff Tribble.. Auckland N.Z. ]
- # # [ Nov 1990 ]
- # ...
- # Rule NZ 1974 1988 - Oct lastSun 2:00 1:00 D
- # Rule NZ 1989 max - Oct Sun>=1 2:00 1:00 D
- # Rule NZ 1975 1989 - Mar Sun>=1 3:00 0 S
- # Rule NZ 1990 max - Mar lastSun 3:00 0 S
- # ...
- # Zone NZ 12:00 NZ NZ%sT # New Zealand
- # Zone NZ-CHAT 12:45 - NZ-CHAT # Chatham Island
- # From Arthur David Olson (1992-03-08):
- # The chosen rules use the Davies October 8 values for the start of DST in 1989
- # rather than the October 1 value.
- # From Paul Eggert (1995-12-19);
- # Shank & Pottenger report 2:00 for all autumn changes in Australia and NZ.
- # Robert Uzgalis writes that the New Zealand Daylight
- # Savings Time Order in Council dated 1990-06-18 specifies 2:00 standard
- # time on both the first Sunday in October and the third Sunday in March.
- # As with Australia, we'll assume the tradition is 2:00s, not 2:00.
- #
- # From Paul Eggert (2006-03-22):
- # The Department of Internal Affairs (DIA) maintains a brief history,
- # as does Carol Squires; see tz-link.htm for the full references.
- # Use these sources in preference to Shanks & Pottenger.
- #
- # For Chatham, IATA SSIM (1991/1999) gives the NZ rules but with
- # transitions at 2:45 local standard time; this confirms that Chatham
- # is always exactly 45 minutes ahead of Auckland.
- # From Colin Sharples (2007-04-30):
- # DST will now start on the last Sunday in September, and end on the
- # first Sunday in April. The changes take effect this year, meaning
- # that DST will begin on 2007-09-30 2008-04-06.
- # http://www.dia.govt.nz/diawebsite.nsf/wpg_URL/Services-Daylight-Saving-Daylight-saving-to-be-extended
- # From Paul Eggert (2014-07-14):
- # Chatham Island time was formally standardized on 1957-01-01 by
- # New Zealand's Standard Time Amendment Act 1956 (1956-10-26).
- # http://www.austlii.edu.au/nz/legis/hist_act/staa19561956n100244.pdf
- # According to Google Books snippet view, a speaker in the New Zealand
- # parliamentary debates in 1956 said "Clause 78 makes provision for standard
- # time in the Chatham Islands. The time there is 45 minutes in advance of New
- # Zealand time. I understand that is the time they keep locally, anyhow."
- # For now, assume this practice goes back to the introduction of standard time
- # in New Zealand, as this would make Chatham Islands time almost exactly match
- # LMT back when New Zealand was at UTC+11:30; also, assume Chatham Islands did
- # not observe New Zealand's prewar DST.
- ###############################################################################
- # Fiji
- # Howse writes (p 153) that in 1879 the British governor of Fiji
- # enacted an ordinance standardizing the islands on Antipodean Time
- # instead of the American system (which was one day behind).
- # From Rives McDow (1998-10-08):
- # Fiji will introduce DST effective 0200 local time, 1998-11-01
- # until 0300 local time 1999-02-28. Each year the DST period will
- # be from the first Sunday in November until the last Sunday in February.
- # From Paul Eggert (2000-01-08):
- # IATA SSIM (1999-09) says DST ends 0100 local time. Go with McDow.
- # From the BBC World Service in
- # http://news.bbc.co.uk/2/hi/asia-pacific/205226.stm (1998-10-31 16:03 UTC):
- # The Fijian government says the main reasons for the time change is to
- # improve productivity and reduce road accidents.... [T]he move is also
- # intended to boost Fiji's ability to attract tourists to witness the dawning
- # of the new millennium.
- # http://www.fiji.gov.fj/press/2000_09/2000_09_13-05.shtml (2000-09-13)
- # reports that Fiji has discontinued DST.
- # Kiribati
- # From Paul Eggert (1996-01-22):
- # Today's _Wall Street Journal_ (page 1) reports that Kiribati
- # "declared it the same day [throughout] the country as of Jan. 1, 1995"
- # as part of the competition to be first into the 21st century.
- # Kwajalein
- # In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
- # I wonder what happened in Kwajalein, where there was NO Friday,
- # 1993-08-20. Thursday night at midnight Kwajalein switched sides with
- # respect to the International Date Line, to rejoin its fellow islands,
- # going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink.
- # N Mariana Is, Guam
- # Howse writes (p 153) "The Spaniards, on the other hand, reached the
- # Philippines and the Ladrones from America," and implies that the Ladrones
- # (now called the Marianas) kept American date for quite some time.
- # For now, we assume the Ladrones switched at the same time as the Philippines;
- # see Asia/Manila.
- # US Public Law 106-564 (2000-12-23) made UTC+10 the official standard time,
- # under the name "Chamorro Standard Time". There is no official abbreviation,
- # but Congressman Robert A. Underwood, author of the bill that became law,
- # wrote in a press release (2000-12-27) that he will seek the use of "ChST".
- # Micronesia
- # Alan Eugene Davis writes (1996-03-16),
- # "I am certain, having lived there for the past decade, that 'Truk'
- # (now properly known as Chuuk) ... is in the time zone GMT+10."
- #
- # Shanks & Pottenger write that Truk switched from UTC+10 to UTC+11
- # on 1978-10-01; ignore this for now.
- # From Paul Eggert (1999-10-29):
- # The Federated States of Micronesia Visitors Board writes in
- # The Federated States of Micronesia - Visitor Information (1999-01-26)
- # http://www.fsmgov.org/info/clocks.html
- # that Truk and Yap are UTC+10, and Ponape and Kosrae are UTC+11.
- # We don't know when Kosrae switched from UTC+12; assume January 1 for now.
- # Midway
- # From Charles T O'Connor, KMTH DJ (1956),
- # quoted in the KTMH section of the Radio Heritage Collection
- # <http://radiodx.com/spdxr/KMTH.htm> (2002-12-31):
- # For the past two months we've been on what is known as Daylight
- # Saving Time. This time has put us on air at 5am in the morning,
- # your time down there in New Zealand. Starting September 2, 1956
- # we'll again go back to Standard Time. This'll mean that we'll go to
- # air at 6am your time.
- #
- # From Paul Eggert (2003-03-23):
- # We don't know the date of that quote, but we'll guess they
- # started DST on June 3. Possibly DST was observed other years
- # in Midway, but we have no record of it.
- # Norfolk
- # From Alexander Krivenyshev (2015-09-23):
- # Norfolk Island will change ... from +1130 to +1100:
- # https://www.comlaw.gov.au/Details/F2015L01483/Explanatory%20Statement/Text
- # ... at 12.30 am (by legal time in New South Wales) on 4 October 2015.
- # http://www.norfolkisland.gov.nf/nia/MediaRelease/Media%20Release%20Norfolk%20Island%20Standard%20Time%20Change.pdf
- # From Paul Eggert (2015-09-23):
- # Transitions before 2015 are from timeanddate.com, which consulted
- # the Norfolk Island Museum and the Australian Bureau of Meteorology's
- # Norfolk Island station, and found no record of Norfolk observing DST
- # other than in 1974/5. See:
- # http://www.timeanddate.com/time/australia/norfolk-island.html
- # Pitcairn
- # From Rives McDow (1999-11-08):
- # A Proclamation was signed by the Governor of Pitcairn on the 27th March 1998
- # with regard to Pitcairn Standard Time. The Proclamation is as follows.
- #
- # The local time for general purposes in the Islands shall be
- # Co-ordinated Universal time minus 8 hours and shall be known
- # as Pitcairn Standard Time.
- #
- # ... I have also seen Pitcairn listed as UTC minus 9 hours in several
- # references, and can only assume that this was an error in interpretation
- # somehow in light of this proclamation.
- # From Rives McDow (1999-11-09):
- # The Proclamation regarding Pitcairn time came into effect on 27 April 1998
- # ... at midnight.
- # From Howie Phelps (1999-11-10), who talked to a Pitcairner via shortwave:
- # Betty Christian told me yesterday that their local time is the same as
- # Pacific Standard Time. They used to be 1/2 hour different from us here in
- # Sacramento but it was changed a couple of years ago.
- # (Western) Samoa and American Samoa
- # Howse writes (p 153, citing p 10 of the 1883-11-18 New York Herald)
- # that in 1879 the King of Samoa decided to change
- # "the date in his kingdom from the Antipodean to the American system,
- # ordaining - by a masterpiece of diplomatic flattery - that
- # the Fourth of July should be celebrated twice in that year."
- # Although Shanks & Pottenger says they both switched to UTC-11:30
- # in 1911, and to UTC-11 in 1950. many earlier sources give UTC-11
- # for American Samoa, e.g., the US National Bureau of Standards
- # circular "Standard Time Throughout the World", 1932.
- # Assume American Samoa switched to UTC-11 in 1911, not 1950,
- # and that after 1950 they agreed until (western) Samoa skipped a
- # day in 2011. Assume also that the Samoas follow the US and New
- # Zealand's "ST"/"DT" style of daylight-saving abbreviations.
- # Tonga
- # From Paul Eggert (1996-01-22):
- # Today's _Wall Street Journal_ (p 1) reports that "Tonga has been plotting
- # to sneak ahead of [New Zealanders] by introducing daylight-saving time."
- # Since Kiribati has moved the Date Line it's not clear what Tonga will do.
- # Don Mundell writes in the 1997-02-20 Tonga Chronicle
- # How Tonga became 'The Land where Time Begins':
- # http://www.tongatapu.net.to/tonga/homeland/timebegins.htm
- #
- # Until 1941 Tonga maintained a standard time 50 minutes ahead of NZST
- # 12 hours and 20 minutes ahead of GMT. When New Zealand adjusted its
- # standard time in 1940s, Tonga had the choice of subtracting from its
- # local time to come on the same standard time as New Zealand or of
- # advancing its time to maintain the differential of 13 degrees
- # (approximately 50 minutes ahead of New Zealand time).
- #
- # Because His Majesty King Tāufaʻāhau Tupou IV, then Crown Prince
- # Tungī, preferred to ensure Tonga's title as the land where time
- # begins, the Legislative Assembly approved the latter change.
- #
- # But some of the older, more conservative members from the outer
- # islands objected. "If at midnight on Dec. 31, we move ahead 40
- # minutes, as your Royal Highness wishes, what becomes of the 40
- # minutes we have lost?"
- #
- # The Crown Prince, presented an unanswerable argument: "Remember that
- # on the World Day of Prayer, you would be the first people on Earth
- # to say your prayers in the morning."
- # From Paul Eggert (2006-03-22):
- # Shanks & Pottenger say the transition was on 1968-10-01; go with Mundell.
- # From Eric Ulevik (1999-05-03):
- # Tonga's director of tourism, who is also secretary of the National Millennium
- # Committee, has a plan to get Tonga back in front.
- # He has proposed a one-off move to tropical daylight saving for Tonga from
- # October to March, which has won approval in principle from the Tongan
- # Government.
- # From Steffen Thorsen (1999-09-09):
- # * Tonga will introduce DST in November
- #
- # I was given this link by John Letts:
- # http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
- #
- # I have not been able to find exact dates for the transition in November
- # yet. By reading this article it seems like Fiji will be 14 hours ahead
- # of UTC as well, but as far as I know Fiji will only be 13 hours ahead
- # (12 + 1 hour DST).
- # From Arthur David Olson (1999-09-20):
- # According to <http://www.tongaonline.com/news/sept1799.html>:
- # "Daylight Savings Time will take effect on Oct. 2 through April 15, 2000
- # and annually thereafter from the first Saturday in October through the
- # third Saturday of April. Under the system approved by Privy Council on
- # Sept. 10, clocks must be turned ahead one hour on the opening day and
- # set back an hour on the closing date."
- # Alas, no indication of the time of day.
- # From Rives McDow (1999-10-06):
- # Tonga started its Daylight Saving on Saturday morning October 2nd at 0200am.
- # Daylight Saving ends on April 16 at 0300am which is Sunday morning.
- # From Steffen Thorsen (2000-10-31):
- # Back in March I found a notice on the website http://www.tongaonline.com
- # that Tonga changed back to standard time one month early, on March 19
- # instead of the original reported date April 16. Unfortunately, the article
- # is no longer available on the site, and I did not make a copy of the
- # text, and I have forgotten to report it here.
- # (Original URL was <http://www.tongaonline.com/news/march162000.htm>)
- # From Rives McDow (2000-12-01):
- # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27.
- # From Sione Moala-Mafi (2001-09-20) via Rives McDow:
- # At 2:00am on the first Sunday of November, the standard time in the Kingdom
- # shall be moved forward by one hour to 3:00am. At 2:00am on the last Sunday
- # of January the standard time in the Kingdom shall be moved backward by one
- # hour to 1:00am.
- # From Pulu 'Anau (2002-11-05):
- # The law was for 3 years, supposedly to get renewed. It wasn't.
- # Wake
- # From Vernice Anderson, Personal Secretary to Philip Jessup,
- # US Ambassador At Large (oral history interview, 1971-02-02):
- #
- # Saturday, the 14th [of October, 1950] - ... The time was all the
- # more confusing at that point, because we had crossed the
- # International Date Line, thus getting two Sundays. Furthermore, we
- # discovered that Wake Island had two hours of daylight saving time
- # making calculation of time in Washington difficult if not almost
- # impossible.
- #
- # http://www.trumanlibrary.org/wake/meeting.htm
- # From Paul Eggert (2003-03-23):
- # We have no other report of DST in Wake Island, so omit this info for now.
- ###############################################################################
- # The International Date Line
- # From Gwillim Law (2000-01-03):
- #
- # The International Date Line is not defined by any international standard,
- # convention, or treaty. Mapmakers are free to draw it as they please.
- # Reputable mapmakers will simply ensure that every point of land appears on
- # the correct side of the IDL, according to the date legally observed there.
- #
- # When Kiribati adopted a uniform date in 1995, thereby moving the Phoenix and
- # Line Islands to the west side of the IDL (or, if you prefer, moving the IDL
- # to the east side of the Phoenix and Line Islands), I suppose that most
- # mapmakers redrew the IDL following the boundary of Kiribati. Even that line
- # has a rather arbitrary nature. The straight-line boundaries between Pacific
- # island nations that are shown on many maps are based on an international
- # convention, but are not legally binding national borders.... The date is
- # governed by the IDL; therefore, even on the high seas, there may be some
- # places as late as fourteen hours later than UTC. And, since the IDL is not
- # an international standard, there are some places on the high seas where the
- # correct date is ambiguous.
- # From Wikipedia <http://en.wikipedia.org/wiki/Time_zone> (2005-08-31):
- # Before 1920, all ships kept local apparent time on the high seas by setting
- # their clocks at night or at the morning sight so that, given the ship's
- # speed and direction, it would be 12 o'clock when the Sun crossed the ship's
- # meridian (12 o'clock = local apparent noon). During 1917, at the
- # Anglo-French Conference on Time-keeping at Sea, it was recommended that all
- # ships, both military and civilian, should adopt hourly standard time zones
- # on the high seas. Whenever a ship was within the territorial waters of any
- # nation it would use that nation's standard time. The captain was permitted
- # to change his ship's clocks at a time of his choice following his ship's
- # entry into another zone time - he often chose midnight. These zones were
- # adopted by all major fleets between 1920 and 1925 but not by many
- # independent merchant ships until World War II.
- # From Paul Eggert, using references suggested by Oscar van Vlijmen
- # (2005-03-20):
- #
- # The American Practical Navigator (2002)
- # http://pollux.nss.nima.mil/pubs/pubs_j_apn_sections.html?rid=187
- # talks only about the 180-degree meridian with respect to ships in
- # international waters; it ignores the international date line.
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