[tz] [PATCH 1/2] Follow Australian common usage and update CST/CST to CST/CDT and EST/EST to EST/EDT etc [SEC=UNCLASSIFIED]
Timothy Arceri
T.Arceri at bom.gov.au
Wed Apr 10 23:50:15 UTC 2013
--- australasia 2013-02-21 07:00:40.000000000 +0000
+++ australasia_new 2013-04-10 00:39:26.000000000 +0000
@@ -13,13 +13,13 @@
# 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.
@@ -28,25 +28,25 @@
# Northern Territory
Zone Australia/Darwin 8:43:20 - LMT 1895 Feb
9:00 - CST 1899 May
- 9:30 Aus CST
+ 9:30 Aus C%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 W%sT 1943 Jul
+ 8:00 AW W%sT
Zone Australia/Eucla 8:35:28 - LMT 1895 Dec
- 8:45 Aus CWST 1943 Jul
- 8:45 AW CWST
+ 8:45 Aus CW%sT 1943 Jul
+ 8:45 AW CW%sT
# Queensland
#
@@ -62,42 +62,42 @@
# 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 E%sT 1971
+ 10:00 AQ E%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 E%sT 1971
+ 10:00 AQ E%sT 1992 Jul
+ 10:00 Holiday E%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
+ 9:30 Aus C%sT 1971
+ 9:30 AS C%sT
# Tasmania
#
@@ -106,106 +106,106 @@
# 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 1:00 EDT 1917 Feb
+ 10:00 Aus E%sT 1967
+ 10:00 AT E%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 1:00 EDT 1917 Feb
+ 10:00 Aus E%sT 1971 Jul
+ 10:00 AT E%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 E%sT 1971
+ 10:00 AV E%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 E%sT 1971
+ 10:00 AN E%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
+ 9:30 Aus C%sT 1971
+ 9:30 AN C%sT 2000
+ 9:30 AS C%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
+ 10:30 LH LH%sT
# Australian miscellany
#
@@ -841,39 +841,15 @@
# Implementation Dates of Daylight Saving Time within Australia
# </a> 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.
-
-# 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 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 Timothy Arceri (2013-04-09)
+# Webpage that lists the Australian Governments recommended time zone names and abbreviations:
+# http://australia.gov.au/about-australia/our-country/time
+#
+# NSW Goverment time definitions (covers time zones and abbreviations):
+# http://www.communityrelations.lawlink.nsw.gov.au/cru/daylight/definitions_of_time.html
# 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:
+# 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"
@@ -957,6 +933,33 @@
# saying that both AEST/AEDT and EST/EST are widely used and
# understood in Australia.
+# From Timothy Arceri (2013-04-09), results from a long discussion about
+# "EST" - Eastern Summer Time versus "EDT" - Eastern Daylight Time etc.:
+#
+# * Do Australians more often use "EDT" or "EST"?
+#
+# 875,000 "Eastern Standard Time (EST)" site:.au
+# 655,000 "Eastern Standard Time (AEST)" site:.au
+#
+# 6 "Eastern Summer Time (EST)" site:.au
+# 64 "Eastern Summer Time (AEST)" site:.au
+# 30,500 "Eastern Daylight Time (EDT)" site:.au
+# 180,000 "Eastern Daylight Time (AEDT)" site:.au
+#
+# 357,000 "Central Standard Time (CST)" site:.au
+# 316 "Central Standard Time (ACST)" site:.au
+#
+# 4 "Central Summer Time (CST)" site:.au
+# 0 "Central Summer Time (ACST)" site:.au
+#
+# 19,600 "Central Daylight Time (CDT)" site:.au
+# 157 "Central Daylight Time (ACDT)" site:.au
+#
+# Here we are only looking at cases where the time zone abbreviation
+# has been defined. These results show that the abbreviation for Daylight
+# time EDT/AEDT/CDT/ACDT is overwhelmingly greater than the usage of the
+# abbreviation for Summer time EST/AEST/CST/ACST
+
# 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
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