make/data/tzdata/australasia
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@@ -19,11 +19,10 @@
#
# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
# or visit www.oracle.com if you need additional information or have any
# questions.
#
-# <pre>
# This file is in the public domain, so clarified as of
# 2009-05-17 by Arthur David Olson.
# This file also includes Pacific islands.
@@ -34,44 +33,44 @@
# 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 -
-Rule Aus 1917 only - Mar 25 2:00 0 -
-Rule Aus 1942 only - Jan 1 2:00 1:00 -
-Rule Aus 1942 only - Mar 29 2:00 0 -
-Rule Aus 1942 only - Sep 27 2:00 1:00 -
-Rule Aus 1943 1944 - Mar lastSun 2:00 0 -
-Rule Aus 1943 only - Oct 3 2:00 1:00 -
+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 - CST 1899 May
- 9:30 Aus CST
+ 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 -
-Rule AW 1975 only - Mar Sun>=1 2:00s 0 -
-Rule AW 1983 only - Oct lastSun 2:00s 1:00 -
-Rule AW 1984 only - Mar Sun>=1 2:00s 0 -
-Rule AW 1991 only - Nov 17 2:00s 1:00 -
-Rule AW 1992 only - Mar Sun>=1 2:00s 0 -
-Rule AW 2006 only - Dec 3 2:00s 1:00 -
-Rule AW 2007 2009 - Mar lastSun 2:00s 0 -
-Rule AW 2007 2008 - Oct lastSun 2:00s 1:00 -
+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 WST 1943 Jul
- 8:00 AW WST
+ 8:00 Aus AW%sT 1943 Jul
+ 8:00 AW AW%sT
Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
- 8:45 Aus CWST 1943 Jul
- 8:45 AW CWST
+ 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
@@ -83,154 +82,154 @@
# 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 -
-Rule AQ 1972 only - Feb lastSun 2:00s 0 -
-Rule AQ 1989 1991 - Oct lastSun 2:00s 1:00 -
-Rule AQ 1990 1992 - Mar Sun>=1 2:00s 0 -
-Rule Holiday 1992 1993 - Oct lastSun 2:00s 1:00 -
-Rule Holiday 1993 1994 - Mar Sun>=1 2:00s 0 -
+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 EST 1971
- 10:00 AQ EST
+ 10:00 Aus AE%sT 1971
+ 10:00 AQ AE%sT
Zone Australia/Lindeman 9:55:56 - LMT 1895
- 10:00 Aus EST 1971
- 10:00 AQ EST 1992 Jul
- 10:00 Holiday EST
+ 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 -
-Rule AS 1986 only - Oct 19 2:00s 1:00 -
-Rule AS 1987 2007 - Oct lastSun 2:00s 1:00 -
-Rule AS 1972 only - Feb 27 2:00s 0 -
-Rule AS 1973 1985 - Mar Sun>=1 2:00s 0 -
-Rule AS 1986 1990 - Mar Sun>=15 2:00s 0 -
-Rule AS 1991 only - Mar 3 2:00s 0 -
-Rule AS 1992 only - Mar 22 2:00s 0 -
-Rule AS 1993 only - Mar 7 2:00s 0 -
-Rule AS 1994 only - Mar 20 2:00s 0 -
-Rule AS 1995 2005 - Mar lastSun 2:00s 0 -
-Rule AS 2006 only - Apr 2 2:00s 0 -
-Rule AS 2007 only - Mar lastSun 2:00s 0 -
-Rule AS 2008 max - Apr Sun>=1 2:00s 0 -
-Rule AS 2008 max - Oct Sun>=1 2:00s 1:00 -
+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 - CST 1899 May
- 9:30 Aus CST 1971
- 9:30 AS CST
+ 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 -
-Rule AT 1968 only - Mar lastSun 2:00s 0 -
-Rule AT 1968 1985 - Oct lastSun 2:00s 1:00 -
-Rule AT 1969 1971 - Mar Sun>=8 2:00s 0 -
-Rule AT 1972 only - Feb lastSun 2:00s 0 -
-Rule AT 1973 1981 - Mar Sun>=1 2:00s 0 -
-Rule AT 1982 1983 - Mar lastSun 2:00s 0 -
-Rule AT 1984 1986 - Mar Sun>=1 2:00s 0 -
-Rule AT 1986 only - Oct Sun>=15 2:00s 1:00 -
-Rule AT 1987 1990 - Mar Sun>=15 2:00s 0 -
-Rule AT 1987 only - Oct Sun>=22 2:00s 1:00 -
-Rule AT 1988 1990 - Oct lastSun 2:00s 1:00 -
-Rule AT 1991 1999 - Oct Sun>=1 2:00s 1:00 -
-Rule AT 1991 2005 - Mar lastSun 2:00s 0 -
-Rule AT 2000 only - Aug lastSun 2:00s 1:00 -
-Rule AT 2001 max - Oct Sun>=1 2:00s 1:00 -
-Rule AT 2006 only - Apr Sun>=1 2:00s 0 -
-Rule AT 2007 only - Mar lastSun 2:00s 0 -
-Rule AT 2008 max - Apr Sun>=1 2:00s 0 -
+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 - EST 1916 Oct 1 2:00
- 10:00 1:00 EST 1917 Feb
- 10:00 Aus EST 1967
- 10:00 AT EST
+ 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 - EST 1916 Oct 1 2:00
- 10:00 1:00 EST 1917 Feb
- 10:00 Aus EST 1971 Jul
- 10:00 AT EST
+ 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 -
-Rule AV 1972 only - Feb lastSun 2:00s 0 -
-Rule AV 1973 1985 - Mar Sun>=1 2:00s 0 -
-Rule AV 1986 1990 - Mar Sun>=15 2:00s 0 -
-Rule AV 1986 1987 - Oct Sun>=15 2:00s 1:00 -
-Rule AV 1988 1999 - Oct lastSun 2:00s 1:00 -
-Rule AV 1991 1994 - Mar Sun>=1 2:00s 0 -
-Rule AV 1995 2005 - Mar lastSun 2:00s 0 -
-Rule AV 2000 only - Aug lastSun 2:00s 1:00 -
-Rule AV 2001 2007 - Oct lastSun 2:00s 1:00 -
-Rule AV 2006 only - Apr Sun>=1 2:00s 0 -
-Rule AV 2007 only - Mar lastSun 2:00s 0 -
-Rule AV 2008 max - Apr Sun>=1 2:00s 0 -
-Rule AV 2008 max - Oct Sun>=1 2:00s 1:00 -
+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 EST 1971
- 10:00 AV EST
+ 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 -
-Rule AN 1972 only - Feb 27 2:00s 0 -
-Rule AN 1973 1981 - Mar Sun>=1 2:00s 0 -
-Rule AN 1982 only - Apr Sun>=1 2:00s 0 -
-Rule AN 1983 1985 - Mar Sun>=1 2:00s 0 -
-Rule AN 1986 1989 - Mar Sun>=15 2:00s 0 -
-Rule AN 1986 only - Oct 19 2:00s 1:00 -
-Rule AN 1987 1999 - Oct lastSun 2:00s 1:00 -
-Rule AN 1990 1995 - Mar Sun>=1 2:00s 0 -
-Rule AN 1996 2005 - Mar lastSun 2:00s 0 -
-Rule AN 2000 only - Aug lastSun 2:00s 1:00 -
-Rule AN 2001 2007 - Oct lastSun 2:00s 1:00 -
-Rule AN 2006 only - Apr Sun>=1 2:00s 0 -
-Rule AN 2007 only - Mar lastSun 2:00s 0 -
-Rule AN 2008 max - Apr Sun>=1 2:00s 0 -
-Rule AN 2008 max - Oct Sun>=1 2:00s 1:00 -
+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 EST 1971
- 10:00 AN EST
+ 10:00 Aus AE%sT 1971
+ 10:00 AN AE%sT
Zone Australia/Broken_Hill 9:25:48 - LMT 1895 Feb
- 10:00 - EST 1896 Aug 23
- 9:00 - CST 1899 May
- 9:30 Aus CST 1971
- 9:30 AN CST 2000
- 9:30 AS CST
+ 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 -
-Rule LH 1982 1985 - Mar Sun>=1 2:00 0 -
-Rule LH 1985 only - Oct lastSun 2:00 0:30 -
-Rule LH 1986 1989 - Mar Sun>=15 2:00 0 -
-Rule LH 1986 only - Oct 19 2:00 0:30 -
-Rule LH 1987 1999 - Oct lastSun 2:00 0:30 -
-Rule LH 1990 1995 - Mar Sun>=1 2:00 0 -
-Rule LH 1996 2005 - Mar lastSun 2:00 0 -
-Rule LH 2000 only - Aug lastSun 2:00 0:30 -
-Rule LH 2001 2007 - Oct lastSun 2:00 0:30 -
-Rule LH 2006 only - Apr Sun>=1 2:00 0 -
-Rule LH 2007 only - Mar lastSun 2:00 0 -
-Rule LH 2008 max - Apr Sun>=1 2:00 0 -
-Rule LH 2008 max - Oct Sun>=1 2:00 0:30 -
+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 - EST 1981 Mar
- 10:30 LH LHST
+ 10:00 - AEST 1981 Mar
+ 10:30 LH LH%sT
# Australian miscellany
#
# Ashmore Is, Cartier
# no indigenous inhabitants; only seasonal caretakers
@@ -254,117 +253,87 @@
# 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 EST-type as the first 32-bit type;
+# 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 - EST 1916 Oct 1 2:00
- 10:00 1:00 EST 1917 Feb
- 10:00 Aus EST 1919 Apr 1 0:00s
+ 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 EST 1967
- 10:00 AT EST 2010 Apr 4 3:00
+ 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
-# 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
-
-# Cocos
+# 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"
-# <a href="http://www.radiofiji.com.fj/fullstory.php?id=23719">
# http://www.radiofiji.com.fj/fullstory.php?id=23719
-# </a>
-# or
-# <a href="http://www.worldtimezone.com/dst_news/dst_news_fiji01.html">
# http://www.worldtimezone.com/dst_news/dst_news_fiji01.html
-# </a>
# From Steffen Thorsen (2009-11-10):
# The Fiji Government has posted some more details about the approved
# amendments:
-# <a href="http://www.fiji.gov.fj/publish/page_16198.shtml">
# http://www.fiji.gov.fj/publish/page_16198.shtml
-# </a>
# 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:
-# <a href="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">
# 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>
#
# A bit more background info here:
-# <a href="http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html">
# http://www.timeanddate.com/news/time/fiji-dst-ends-march-2010.html
-# </a>
# 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:
-# <a href="http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155">
# http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=2608:daylight-savings&catid=71:press-releases&Itemid=155
-# </a>
-# or
-# <a href="http://www.worldtimezone.com/dst_news/dst_news_fiji04.html">
# http://www.worldtimezone.com/dst_news/dst_news_fiji04.html
-# </a>
# 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).
#
-# <a href="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">
-# www.fiji.gov.fj/index.php?option=com_content&view=article&id=4966:daylight-saving-starts-in-fiji&catid=71:press-releases&Itemid=155
-# </a>
+# 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.
#
-# <a href="http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155">
# http://www.fiji.gov.fj/index.php?option=com_content&view=article&id=5017:amendments-to-daylight-savings&catid=71:press-releases&Itemid=155
-# </a>
# 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
@@ -477,11 +446,11 @@
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
+Zone Pacific/Noumea 11:05:48 - LMT 1912 Jan 13 # Nouméa
11:00 NC NC%sT
###############################################################################
@@ -494,11 +463,12 @@
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 notation for this so we must duplicate the Rule lines.
+# 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
@@ -517,25 +487,37 @@
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 1957 Jan 1
+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; Maori and Moriori, colonial settlers, pastoralists, sealers,
+# 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]
@@ -568,114 +550,61 @@
-8:00 - PST # Pitcairn Standard Time
# American Samoa
Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
-11:22:48 - LMT 1911
- -11:30 - SAMT 1950 # Samoa Time
-11:00 - NST 1967 Apr # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
-# Samoa
+# 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:
-# <a href="http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html">
# http://www.timeanddate.com/news/time/samoa-dst-plan-2009.html
-# </a>
#
# Samoa's Daylight Saving Time Act 2009 is available here, but does not
# contain any dates:
-# <a href="http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf">
# http://www.parliament.gov.ws/documents/acts/Daylight%20Saving%20Act%20%202009%20%28English%29%20-%20Final%207-7-091.pdf
-# </a>
# From Laupue Raymond Hughes (2010-10-07):
# Please see
-# <a href="http://www.mcil.gov.ws">
# http://www.mcil.gov.ws
-# </a>,
# 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):
-# I believe this will be posted shortly on the website
-# <a href="http://www.mcil.gov.ws">
-# www.mcil.gov.ws
-# </a>
-#
-# PUBLIC NOTICE ON DAYLIGHT SAVING TIME
-#
-# Pursuant to the Daylight Saving Act 2009 and Cabinets decision,
-# businesses and the general public are hereby advised that daylight
-# saving time is on the first Saturday of April 2011 (02/04/11).
-#
-# The public is therefore advised that when the standard time strikes
-# the hour of four oclock (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 oclock (3:00am or 0300Hrs).
+# [http://www.mcil.gov.ws/ftcd/daylight_saving_2011.pdf]
#
-# Margaret Fruean ACTING CHIEF EXECUTIVE OFFICER MINISTRY OF COMMERCE,
-# INDUSTRY AND LABOUR 28th February 2011
+# ... 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 Zuelke (2011-05-09):
+# From David Zülke (2011-05-09):
# Subject: Samoa to move timezone from east to west of international date line
#
-# <a href="http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963">
# http://www.morningstar.co.uk/uk/markets/newsfeeditem.aspx?id=138501958347963
-# </a>
-# From Mark Sim-Smith (2011-08-17):
-# I have been in contact with Leilani Tuala Warren from the Samoa Law
-# Reform Commission, and she has sent me a copy of the Bill that she
-# confirmed has been passed...Most of the sections are about maps rather
-# than the time zone change, but I'll paste the relevant bits below. But
-# the essence is that at midnight 29 Dec (UTC-11 I suppose), Samoa
-# changes from UTC-11 to UTC+13:
-#
-# International Date Line Bill 2011
-#
-# AN ACT to provide for the change to standard time in Samoa and to make
-# consequential amendments to the position of the International Date
-# Line, and for related purposes.
-#
-# BE IT ENACTED by the Legislative Assembly of Samoa in Parliament
-# assembled as follows:
-#
-# 1. Short title and commencement-(1) This Act may be cited as the
-# International Date Line Act 2011. (2) Except for section 5(3) this Act
-# commences at 12 o'clock midnight, on Thursday 29th December 2011. (3)
-# Section 5(3) commences on the date of assent by the Head of State.
-#
-# [snip]
-#
-# 3. Interpretation - [snip] "Samoa standard time" in this Act and any
-# other statute of Samoa which refers to 'Samoa standard time' means the
-# time 13 hours in advance of Co-ordinated Universal Time.
-#
-# 4. Samoa standard time - (1) Upon the commencement of this Act, Samoa
-# standard time shall be set at 13 hours in advance of Co-ordinated
-# Universal Time for the whole of Samoa. (2) All references to Samoa's
-# time zone and to Samoa standard time in Samoa in all legislation and
-# instruments after the commencement of this Act shall be references to
-# Samoa standard time as provided for in this Act. (3) Nothing in this
-# Act affects the provisions of the Daylight Saving Act 2009, except that
-# it defines Samoa standard time....
+# 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):
-# <a href="http://www.mcil.gov.ws/mcil_publications.html">
# http://www.mcil.gov.ws/mcil_publications.html
-# </a>
#
# here is the official website publication for Samoa DST and dateline change
#
# DST
# Year End Time Start Time
@@ -684,39 +613,30 @@
#
# Dateline Change skip Friday 30th Dec 2011
# Thursday 29th December 2011 23:59:59 Hours
# Saturday 31st December 2011 00:00:00 Hours
#
-# Clarification by Tim Parenti (2012-01-03):
-# Although Samoa has used Daylight Saving Time in the 2010-2011 and 2011-2012
-# seasons, there is not yet any indication that this trend will continue on
-# a regular basis. For now, we have explicitly listed the transitions below.
-#
-# From Nicky (2012-09-10):
+# From Nicholas Pereira (2012-09-10):
# Daylight Saving Time commences on Sunday 30th September 2012 and
-# ends on Sunday 7th of April 2013.
-#
-# Please find link below for more information.
+# ends on Sunday 7th of April 2013....
# http://www.mcil.gov.ws/mcil_publications.html
#
-# That publication also includes dates for Summer of 2013/4 as well
-# which give the impression of a pattern in selecting dates for the
-# future, so for now, we will guess this will continue.
+# 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.
-# Western Samoa
# 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
-Rule WS 2012 max - Apr Sun>=1 4:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
-11:26:56 - LMT 1911
- -11:30 - SAMT 1950 # Samoa Time
- -11:00 - WST 2010 Sep 26
- -11:00 1:00 WSDT 2011 Apr 2 4:00
- -11:00 - WST 2011 Sep 24 3:00
- -11:00 1:00 WSDT 2011 Dec 30
- 13:00 1:00 WSDT 2012 Apr Sun>=1 4:00
+ -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]
@@ -891,183 +811,203 @@
# <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;
+# 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 WST WST Western Australia
-# 8:45 CWST CWST Central Western Australia*
+# 8:00 AWST AWDT Western Australia
+# 8:45 ACWST ACWDT Central Western Australia*
# 9:00 JST Japan
-# 9:30 CST CST Central Australia
-# 10:00 EST EST Eastern Australia
+# 9:30 ACST ACDT Central Australia
+# 10:00 AEST AEDT Eastern Australia
# 10:00 ChST Chamorro
-# 10:30 LHST LHST Lord Howe*
+# 10:30 LHST LHDT Lord Howe*
# 11:30 NZMT NZST New Zealand through 1945
# 12:00 NZST NZDT New Zealand 1946-present
-# 12:45 CHAST CHADT Chatham*
+# 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 Galapagos Is.
+# 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):
-# <a href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">
# Implementation Dates of Daylight Saving Time within Australia
-# </a> summarizes daylight saving issues in 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):
-# <a href="http://www.lawlink.nsw.gov.au/lawlink/Corporate/ll_agdinfo.nsf/pages/community_relations_daylight_saving">
# Lawlink NSW:Daylight Saving in New South Wales
-# </a> covers New South Wales in particular.
+# <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
+# 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
+# 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
+# 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;
+# prefixed by the word 'Australian' when referring to local times;
# time announcements on that service, naturally enough, are made in UTC.
-# From Arthur David Olson (1992-03-08):
-# Given the above, what's chosen for year-round use is:
-# CST for any place operating at a GMTOFF of 9:30
-# WST for any place operating at a GMTOFF of 8:00
-# EST for any place operating at a GMTOFF of 10:00
-
-# From Chuck Soper (2006-06-01):
-# I recently found this Australian government web page on time zones:
-# <http://www.australia.gov.au/about-australia-13time>
-# And this government web page lists time zone names and abbreviations:
-# <http://www.bom.gov.au/climate/averages/tables/daysavtm.shtml>
-
-# From Paul Eggert (2001-04-05), summarizing a long discussion about "EST"
-# versus "AEST" etc.:
-#
-# I see the following points of dispute:
-#
-# * How important are unique time zone abbreviations?
-#
-# Here I tend to agree with the point (most recently made by Chris
-# Newman) that unique abbreviations should not be essential for proper
-# operation of software. We have other instances of ambiguity
-# (e.g. "IST" denoting both "Israel Standard Time" and "Indian
-# Standard Time"), and they are not likely to go away any time soon.
-# In the old days, some software mistakenly relied on unique
-# abbreviations, but this is becoming less true with time, and I don't
-# think it's that important to cater to such software these days.
-#
-# On the other hand, there is another motivation for unambiguous
-# abbreviations: it cuts down on human confusion. This is
-# particularly true for Australia, where "EST" can mean one thing for
-# time T and a different thing for time T plus 1 second.
-#
-# * Does the relevant legislation indicate which abbreviations should be used?
-#
-# Here I tend to think that things are a mess, just as they are in
-# many other countries. We Americans are currently disagreeing about
-# which abbreviation to use for the newly legislated Chamorro Standard
-# Time, for example.
-#
-# Personally, I would prefer to use common practice; I would like to
-# refer to legislation only for examples of common practice, or as a
-# tiebreaker.
-#
-# * Do Australians more often use "Eastern Daylight Time" or "Eastern
-# Summer Time"? Do they typically prefix the time zone names with
-# the word "Australian"?
-#
-# My own impression is that both "Daylight Time" and "Summer Time" are
-# common and are widely understood, but that "Summer Time" is more
-# popular; and that the leading "A" is also common but is omitted more
-# often than not. I just used AltaVista advanced search and got the
-# following count of page hits:
-#
-# 1,103 "Eastern Summer Time" AND domain:au
-# 971 "Australian Eastern Summer Time" AND domain:au
-# 613 "Eastern Daylight Time" AND domain:au
-# 127 "Australian Eastern Daylight Time" AND domain:au
-#
-# Here "Summer" seems quite a bit more popular than "Daylight",
-# particularly when we know the time zone is Australian and not US,
-# say. The "Australian" prefix seems to be popular for Eastern Summer
-# Time, but unpopular for Eastern Daylight Time.
-#
-# For abbreviations, tools like AltaVista are less useful because of
-# ambiguity. Many hits are not really time zones, unfortunately, and
-# many hits denote US time zones and not Australian ones. But here
-# are the hit counts anyway:
-#
-# 161,304 "EST" and domain:au
-# 25,156 "EDT" and domain:au
-# 18,263 "AEST" and domain:au
-# 10,416 "AEDT" and domain:au
-#
-# 14,538 "CST" and domain:au
-# 5,728 "CDT" and domain:au
-# 176 "ACST" and domain:au
-# 29 "ACDT" and domain:au
-#
-# 7,539 "WST" and domain:au
-# 68 "AWST" and domain:au
-#
-# This data suggest that Australians tend to omit the "A" prefix in
-# practice. The situation for "ST" versus "DT" is less clear, given
-# the ambiguities involved.
-#
-# * How do Australians feel about the abbreviations in the tz database?
-#
-# If you just count Australians on this list, I count 2 in favor and 3
-# against. One of the "against" votes (David Keegel) counseled delay,
-# saying that both AEST/AEDT and EST/EST are widely used and
-# understood in Australia.
+# 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.
+# 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):
-# <a href="http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html">
# Standard Time Act 1987 (updated 1995-04-04)
-# </a>
+# <http://www.austlii.edu.au/au/legis/nsw/consol_act/sta1987137/index.html>
# ACT
-# <a href="http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html">
# Standard Time and Summer Time Act 1972
-# </a>
+# <http://www.austlii.edu.au/au/legis/act/consol_act/stasta1972279/index.html>
# SA
-# <a href="http://www.austlii.edu.au/au/legis/sa/consol_act/sta1898137/index.html">
# Standard Time Act, 1898
-# </a>
+# <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
@@ -1081,11 +1021,11 @@
# 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.
+# 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 ]
@@ -1128,13 +1068,13 @@
# 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.
-# <a href="http://www.bom.gov.au/faq/faqgen.htm">
# The Australian Bureau of Meteorology FAQ
-# </a> (1999-09-27) writes that Giles Meteorological Station uses
+# <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 ]
@@ -1171,11 +1111,11 @@
# 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 Norgaard Welen (2006-11-01):
+# 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
@@ -1335,60 +1275,55 @@
# 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''
+# 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,
-# <a href="http://www.smh.com.au/news/9905/26/pageone/pageone4.html">
# Two months more daylight saving
-# </a>
-# Sydney Morning Herald (1999-05-26).]
+# 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:
-# <a href="http://dir.gis.nsw.gov.au/cgi-bin/genobject/document/other/daylightsaving/tigGmZ">
# Daylight Saving in New South Wales.
-# </a>
+# <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:
-# <a href="http://abc.net.au/news/regionals/neweng/monthly/regeng-22jul1999-1.htm">
# Narrabri Council to ignore daylight saving
-# </a> (1999-07-22). For now, we'll wait to see if this really happens.
+# <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:
-# <a href="http://abc.net.au/local/news/olympics/1999/07/item19990728112314_1.htm">
-# Vic to extend daylight saving
-# </a> (1999-07-28).
+# 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:
-# <a href="http://abc.net.au/news/olympics/1999/07/item19990719151754_1.htm">
-# South Australia rejects Olympics daylight savings request
-# </a> (1999-07-19).
+# 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:
-# <a href="http://abc.net.au/news/olympics/1999/06/item19990601114608_1.htm">
# Qld says no to daylight savings for Olympics
-# </a> (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
+# <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.''
+# I've been through all this argument domestically...my wife rules."
#
# Broken Hill will stick with South Australian time in 2000. See:
-# <a href="http://abc.net.au/news/regionals/brokenh/monthly/regbrok-21jul1999-6.htm">
-# Broken Hill to be behind the times
-# </a> (1999-07-21).
+# 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.
@@ -1400,11 +1335,11 @@
# See "southeast Australia" above for 2008 and later.
# Yancowinna
# From John Mackin (1989-01-04):
-# `Broken Hill' means the County of Yancowinna.
+# '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 ]
# ...
@@ -1457,34 +1392,30 @@
# 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
-# <a href="http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf">
# http://www.safework.sa.gov.au/uploaded_files/DaylightDatesSet.pdf
-# </a>
# 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:
-# <a href="http://www.timeanddate.com/news/time/south-australia-extends-dst.html">
# http://www.timeanddate.com/news/time/south-australia-extends-dst.html
-# </a>
###############################################################################
# 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.
+# 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. ]
@@ -1522,10 +1453,23 @@
# 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
@@ -1541,28 +1485,24 @@
# 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 Fijiian government says the main reasons for the time change is to
+# 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.
-# Johnston
-
-# Johnston data is from usno1995.
-
# 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''
+# "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
@@ -1573,12 +1513,12 @@
# 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
+# 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,
@@ -1588,21 +1528,20 @@
# 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.''
+# "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
-# <a href="http://www.fsmgov.org/info/clocks.html">
-# The Federated States of Micronesia - Visitor Information
-# </a> (1999-01-26)
+# 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
@@ -1644,40 +1583,47 @@
# 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.
-# Samoa
+# (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.''
-
+# "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.''
+# 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
-# <a href="http://www.tongatapu.net.to/tonga/homeland/timebegins.htm">
-# How Tonga became `The Land where Time Begins'
-# </a>:
+# 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 Taufa'ahau Tupou IV, then Crown Prince
-# Tungi, preferred to ensure Tonga's title as the land where 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
@@ -1699,23 +1645,19 @@
# From Steffen Thorsen (1999-09-09):
# * Tonga will introduce DST in November
#
# I was given this link by John Letts:
-# <a href="http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm">
# http://news.bbc.co.uk/hi/english/world/asia-pacific/newsid_424000/424764.stm
-# </a>
#
# 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 <a href="http://www.tongaonline.com/news/sept1799.html">
-# http://www.tongaonline.com/news/sept1799.html
-# </a>:
+# 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."
@@ -1729,11 +1671,11 @@
# 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 )
+# (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:
@@ -1749,11 +1691,11 @@
# 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
+# 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.
@@ -1794,11 +1736,11 @@
# 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
+# 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):