[tz] [PATCH 1/2] Follow Australian common usage and update CST/CST to CST/CDT and EST/EST to EST/EDT etc [SEC=UNCLASSIFIED]

--- 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... # 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