1# <pre>
2# This file is in the public domain, so clarified as of
3# 2009-05-17 by Arthur David Olson.
4
5# This data is by no means authoritative; if you think you know better,
6# go ahead and edit the file (and please send any changes to
7# tz@iana.org for general use in the future).
8
--- 437 unchanged lines hidden (view full) ---
446# </a>
447
448# From Mariano Absatz (2010-04-12):
449# yes...I can confirm this...and given that San Luis keeps calling
450# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
451# rules...San Luis is still using "Western ARgentina Time" and it got
452# stuck on Summer daylight savings time even though the summer is over.
453
454# From Paul Eggert (2013-02-21):
455# Milne says Cordoba time was -4:16:48.2. Round to the nearest second.
456
457# Zone NAME GMTOFF RULES FORMAT [UNTIL]
458#
459# Buenos Aires (BA), Capital Federal (CF),
460Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
461 -4:16:48 - CMT 1920 May # Cordoba Mean Time
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583 -3:00 - ART 2004 May 23
584 -4:00 - WART 2004 Sep 26
585 -3:00 Arg AR%sT 2008 Oct 18
586 -3:00 - ART
587#
588# San Luis (SL)
589
590Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
591Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S
592
593Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
594 -4:16:48 - CMT 1920 May
595 -4:00 - ART 1930 Dec
596 -4:00 Arg AR%sT 1969 Oct 5
597 -3:00 Arg AR%sT 1990
598 -3:00 1:00 ARST 1990 Mar 14
599 -4:00 - WART 1990 Oct 15
600 -4:00 1:00 WARST 1991 Mar 1
601 -4:00 - WART 1991 Jun 1
602 -3:00 - ART 1999 Oct 3
603 -4:00 1:00 WARST 2000 Mar 3
604 -3:00 - ART 2004 May 31
605 -4:00 - WART 2004 Jul 25
606 -3:00 Arg AR%sT 2008 Jan 21
607 -4:00 SanLuis WAR%sT
608#
609# Santa Cruz (SC)
610Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
611 -4:16:48 - CMT 1920 May # Cordoba Mean Time
612 -4:00 - ART 1930 Dec
613 -4:00 Arg AR%sT 1969 Oct 5
614 -3:00 Arg AR%sT 1999 Oct 3
615 -4:00 Arg AR%sT 2000 Mar 3
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626 -3:00 Arg AR%sT 1999 Oct 3
627 -4:00 Arg AR%sT 2000 Mar 3
628 -3:00 - ART 2004 May 30
629 -4:00 - WART 2004 Jun 20
630 -3:00 Arg AR%sT 2008 Oct 18
631 -3:00 - ART
632
633# Aruba
634# Zone NAME GMTOFF RULES FORMAT [UNTIL]
635Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
636 -4:30 - ANT 1965 # Netherlands Antilles Time
637 -4:00 - AST
638
639# Bolivia
640# Zone NAME GMTOFF RULES FORMAT [UNTIL]
641Zone America/La_Paz -4:32:36 - LMT 1890
642 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
643 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
644 -4:00 - BOT # Bolivia Time
645
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831# due to public pressure, he is reversing the DST policy they implemented
832# last year and will not be going to Summer Time on October 21st....
833# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
834
835# From Rodrigo Severo (2012-10-16):
836# Tocantins state will have DST.
837# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
838
839# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
840# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01)
841# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10)
842Rule Brazil 1931 only - Oct 3 11:00 1:00 S
843Rule Brazil 1932 1933 - Apr 1 0:00 0 -
844Rule Brazil 1932 only - Oct 3 0:00 1:00 S
845# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
846# revoked DST.
--- 203 unchanged lines hidden (view full) ---
1050 -3:00 - BRT
1051#
1052# Tocantins (TO)
1053Zone America/Araguaina -3:12:48 - LMT 1914
1054 -3:00 Brazil BR%sT 1990 Sep 17
1055 -3:00 - BRT 1995 Sep 14
1056 -3:00 Brazil BR%sT 2003 Sep 24
1057 -3:00 - BRT 2012 Oct 21
1058 -3:00 Brazil BR%sT
1059#
1060# Alagoas (AL), Sergipe (SE)
1061Zone America/Maceio -2:22:52 - LMT 1914
1062 -3:00 Brazil BR%sT 1990 Sep 17
1063 -3:00 - BRT 1995 Oct 13
1064 -3:00 Brazil BR%sT 1996 Sep 4
1065 -3:00 - BRT 1999 Sep 30
1066 -3:00 Brazil BR%sT 2000 Oct 22
--- 51 unchanged lines hidden (view full) ---
1118#
1119# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1120# Eirunepe, Envira, Ipixuna
1121Zone America/Eirunepe -4:39:28 - LMT 1914
1122 -5:00 Brazil AC%sT 1988 Sep 12
1123 -5:00 - ACT 1993 Sep 28
1124 -5:00 Brazil AC%sT 1994 Sep 22
1125 -5:00 - ACT 2008 Jun 24 00:00
1126 -4:00 - AMT
1127#
1128# Acre (AC)
1129Zone America/Rio_Branco -4:31:12 - LMT 1914
1130 -5:00 Brazil AC%sT 1988 Sep 12
1131 -5:00 - ACT 2008 Jun 24 00:00
1132 -4:00 - AMT
1133
1134# Chile
1135
1136# From Eduardo Krell (1995-10-19):
1137# The law says to switch to DST at midnight [24:00] on the second SATURDAY
1138# of October.... The law is the same for March and October.
1139# (1998-09-29):
1140# Because of the drought this year, the government decided to go into
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1345# though, as far as we know.
1346#
1347# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1348Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1349 -4:30 - ANT 1965 # Netherlands Antilles Time
1350 -4:00 - AST
1351
1352# From Arthur David Olson (2011-06-15):
1353# At least for now, use links for places with new iso3166 codes.
1354# The name "Lower Prince's Quarter" is both longer than fourteen charaters
1355# and contains an apostrophe; use "Lower_Princes" below.
1356
1357Link America/Curacao America/Lower_Princes # Sint Maarten
1358Link America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba
1359
1360# Ecuador
1361#
1362# Milne says the Sentral and South American Telegraph Company used -5:24:15.
1363#
1364# From Paul Eggert (2007-03-04):
1365# Apparently Ecuador had a failed experiment with DST in 1992.
1366# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
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1491Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1492 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1493 -3:45 - GYT 1975 Jul 31 # Guyana Time
1494 -3:00 - GYT 1991
1495# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1496 -4:00 - GYT
1497
1498# Paraguay
1499# From Paul Eggert (2006-03-22):
1500# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00,
1501# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999
1502# editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1503# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1504Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1505Rule Para 1975 1978 - Mar 1 0:00 0 -
1506Rule Para 1979 1991 - Apr 1 0:00 0 -
1507Rule Para 1989 only - Oct 22 0:00 1:00 S
1508Rule Para 1990 only - Oct 1 0:00 1:00 S
1509Rule Para 1991 only - Oct 6 0:00 1:00 S
1510Rule Para 1992 only - Mar 1 0:00 0 -
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1628 -3:30 - SRT 1984 Oct # Suriname Time
1629 -3:00 - SRT
1630
1631# Trinidad and Tobago
1632# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1633Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1634 -4:00 - AST
1635
1636# Uruguay
1637# From Paul Eggert (1993-11-18):
1638# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1639# From Shanks & Pottenger:
1640# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1641# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1642Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1643Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1644Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
1645Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
1646# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1647Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
1648Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
1649Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
1650# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
1651Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS
1652# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
1653# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger.
1654Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS
1655Rule Uruguay 1942 only - Jan 1 0:00 0 -
1656Rule Uruguay 1942 only - Dec 14 0:00 1:00 S
1657Rule Uruguay 1943 only - Mar 14 0:00 0 -
1658Rule Uruguay 1959 only - May 24 0:00 1:00 S
1659Rule Uruguay 1959 only - Nov 15 0:00 0 -
1660Rule Uruguay 1960 only - Jan 17 0:00 1:00 S
1661Rule Uruguay 1960 only - Mar 6 0:00 0 -
--- 66 unchanged lines hidden ---
2# This file is in the public domain, so clarified as of
3# 2009-05-17 by Arthur David Olson.
4
5# This data is by no means authoritative; if you think you know better,
6# go ahead and edit the file (and please send any changes to
7# tz@iana.org for general use in the future).
8
--- 437 unchanged lines hidden (view full) ---
446# </a>
447
448# From Mariano Absatz (2010-04-12):
449# yes...I can confirm this...and given that San Luis keeps calling
450# UTC-03:00 "summer time", we should't just let San Luis go back to "Arg"
451# rules...San Luis is still using "Western ARgentina Time" and it got
452# stuck on Summer daylight savings time even though the summer is over.
453
454# From Paul Eggert (2013-02-21):
455# Milne says Cordoba time was -4:16:48.2. Round to the nearest second.
456
457# Zone NAME GMTOFF RULES FORMAT [UNTIL]
458#
459# Buenos Aires (BA), Capital Federal (CF),
460Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31
461 -4:16:48 - CMT 1920 May # Cordoba Mean Time
--- 121 unchanged lines hidden (view full) ---
583 -3:00 - ART 2004 May 23
584 -4:00 - WART 2004 Sep 26
585 -3:00 Arg AR%sT 2008 Oct 18
586 -3:00 - ART
587#
588# San Luis (SL)
589
590Rule SanLuis 2008 2009 - Mar Sun>=8 0:00 0 -
591Rule SanLuis 2007 2009 - Oct Sun>=8 0:00 1:00 S
592
593Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31
594 -4:16:48 - CMT 1920 May
595 -4:00 - ART 1930 Dec
596 -4:00 Arg AR%sT 1969 Oct 5
597 -3:00 Arg AR%sT 1990
598 -3:00 1:00 ARST 1990 Mar 14
599 -4:00 - WART 1990 Oct 15
600 -4:00 1:00 WARST 1991 Mar 1
601 -4:00 - WART 1991 Jun 1
602 -3:00 - ART 1999 Oct 3
603 -4:00 1:00 WARST 2000 Mar 3
604 -3:00 - ART 2004 May 31
605 -4:00 - WART 2004 Jul 25
606 -3:00 Arg AR%sT 2008 Jan 21
607 -4:00 SanLuis WAR%sT
608#
609# Santa Cruz (SC)
610Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31
611 -4:16:48 - CMT 1920 May # Cordoba Mean Time
612 -4:00 - ART 1930 Dec
613 -4:00 Arg AR%sT 1969 Oct 5
614 -3:00 Arg AR%sT 1999 Oct 3
615 -4:00 Arg AR%sT 2000 Mar 3
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626 -3:00 Arg AR%sT 1999 Oct 3
627 -4:00 Arg AR%sT 2000 Mar 3
628 -3:00 - ART 2004 May 30
629 -4:00 - WART 2004 Jun 20
630 -3:00 Arg AR%sT 2008 Oct 18
631 -3:00 - ART
632
633# Aruba
634# Zone NAME GMTOFF RULES FORMAT [UNTIL]
635Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad
636 -4:30 - ANT 1965 # Netherlands Antilles Time
637 -4:00 - AST
638
639# Bolivia
640# Zone NAME GMTOFF RULES FORMAT [UNTIL]
641Zone America/La_Paz -4:32:36 - LMT 1890
642 -4:32:36 - CMT 1931 Oct 15 # Calamarca MT
643 -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST
644 -4:00 - BOT # Bolivia Time
645
--- 185 unchanged lines hidden (view full) ---
831# due to public pressure, he is reversing the DST policy they implemented
832# last year and will not be going to Summer Time on October 21st....
833# http://www.correio24horas.com.br/r/artigo/apos-pressoes-wagner-suspende-horario-de-verao-na-bahia
834
835# From Rodrigo Severo (2012-10-16):
836# Tocantins state will have DST.
837# http://noticias.terra.com.br/brasil/noticias/0,,OI6232536-EI306.html
838
839# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
840# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01)
841# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10)
842Rule Brazil 1931 only - Oct 3 11:00 1:00 S
843Rule Brazil 1932 1933 - Apr 1 0:00 0 -
844Rule Brazil 1932 only - Oct 3 0:00 1:00 S
845# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10)
846# revoked DST.
--- 203 unchanged lines hidden (view full) ---
1050 -3:00 - BRT
1051#
1052# Tocantins (TO)
1053Zone America/Araguaina -3:12:48 - LMT 1914
1054 -3:00 Brazil BR%sT 1990 Sep 17
1055 -3:00 - BRT 1995 Sep 14
1056 -3:00 Brazil BR%sT 2003 Sep 24
1057 -3:00 - BRT 2012 Oct 21
1058 -3:00 Brazil BR%sT
1059#
1060# Alagoas (AL), Sergipe (SE)
1061Zone America/Maceio -2:22:52 - LMT 1914
1062 -3:00 Brazil BR%sT 1990 Sep 17
1063 -3:00 - BRT 1995 Oct 13
1064 -3:00 Brazil BR%sT 1996 Sep 4
1065 -3:00 - BRT 1999 Sep 30
1066 -3:00 Brazil BR%sT 2000 Oct 22
--- 51 unchanged lines hidden (view full) ---
1118#
1119# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant,
1120# Eirunepe, Envira, Ipixuna
1121Zone America/Eirunepe -4:39:28 - LMT 1914
1122 -5:00 Brazil AC%sT 1988 Sep 12
1123 -5:00 - ACT 1993 Sep 28
1124 -5:00 Brazil AC%sT 1994 Sep 22
1125 -5:00 - ACT 2008 Jun 24 00:00
1126 -4:00 - AMT
1127#
1128# Acre (AC)
1129Zone America/Rio_Branco -4:31:12 - LMT 1914
1130 -5:00 Brazil AC%sT 1988 Sep 12
1131 -5:00 - ACT 2008 Jun 24 00:00
1132 -4:00 - AMT
1133
1134# Chile
1135
1136# From Eduardo Krell (1995-10-19):
1137# The law says to switch to DST at midnight [24:00] on the second SATURDAY
1138# of October.... The law is the same for March and October.
1139# (1998-09-29):
1140# Because of the drought this year, the government decided to go into
--- 204 unchanged lines hidden (view full) ---
1345# though, as far as we know.
1346#
1347# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1348Zone America/Curacao -4:35:47 - LMT 1912 Feb 12 # Willemstad
1349 -4:30 - ANT 1965 # Netherlands Antilles Time
1350 -4:00 - AST
1351
1352# From Arthur David Olson (2011-06-15):
1353# At least for now, use links for places with new iso3166 codes.
1354# The name "Lower Prince's Quarter" is both longer than fourteen charaters
1355# and contains an apostrophe; use "Lower_Princes" below.
1356
1357Link America/Curacao America/Lower_Princes # Sint Maarten
1358Link America/Curacao America/Kralendijk # Bonaire, Sint Estatius and Saba
1359
1360# Ecuador
1361#
1362# Milne says the Sentral and South American Telegraph Company used -5:24:15.
1363#
1364# From Paul Eggert (2007-03-04):
1365# Apparently Ecuador had a failed experiment with DST in 1992.
1366# <http://midena.gov.ec/content/view/1261/208/> (2007-02-27) and
--- 124 unchanged lines hidden (view full) ---
1491Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown
1492 -3:45 - GBGT 1966 May 26 # Br Guiana Time
1493 -3:45 - GYT 1975 Jul 31 # Guyana Time
1494 -3:00 - GYT 1991
1495# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch.
1496 -4:00 - GYT
1497
1498# Paraguay
1499# From Paul Eggert (2006-03-22):
1500# Shanks & Pottenger say that spring transitions are from 01:00 -> 02:00,
1501# and autumn transitions are from 00:00 -> 23:00. Go with pre-1999
1502# editions of Shanks, and with the IATA, who say transitions occur at 00:00.
1503# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1504Rule Para 1975 1988 - Oct 1 0:00 1:00 S
1505Rule Para 1975 1978 - Mar 1 0:00 0 -
1506Rule Para 1979 1991 - Apr 1 0:00 0 -
1507Rule Para 1989 only - Oct 22 0:00 1:00 S
1508Rule Para 1990 only - Oct 1 0:00 1:00 S
1509Rule Para 1991 only - Oct 6 0:00 1:00 S
1510Rule Para 1992 only - Mar 1 0:00 0 -
--- 117 unchanged lines hidden (view full) ---
1628 -3:30 - SRT 1984 Oct # Suriname Time
1629 -3:00 - SRT
1630
1631# Trinidad and Tobago
1632# Zone NAME GMTOFF RULES FORMAT [UNTIL]
1633Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
1634 -4:00 - AST
1635
1636# Uruguay
1637# From Paul Eggert (1993-11-18):
1638# Uruguay wins the prize for the strangest peacetime manipulation of the rules.
1639# From Shanks & Pottenger:
1640# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
1641# Whitman gives 1923 Oct 1; go with Shanks & Pottenger.
1642Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS
1643Rule Uruguay 1924 1926 - Apr 1 0:00 0 -
1644Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS
1645Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS
1646# Shanks & Pottenger give 1935 Apr 1 0:00 & 1936 Mar 30 0:00; go with Whitman.
1647Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 -
1648Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS
1649Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 -
1650# Whitman gives 1937 Oct 3; go with Shanks & Pottenger.
1651Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS
1652# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13,
1653# and 1943 Apr 13 ``to present time''; go with Shanks & Pottenger.
1654Rule Uruguay 1941 only - Aug 1 0:00 0:30 HS
1655Rule Uruguay 1942 only - Jan 1 0:00 0 -
1656Rule Uruguay 1942 only - Dec 14 0:00 1:00 S
1657Rule Uruguay 1943 only - Mar 14 0:00 0 -
1658Rule Uruguay 1959 only - May 24 0:00 1:00 S
1659Rule Uruguay 1959 only - Nov 15 0:00 0 -
1660Rule Uruguay 1960 only - Jan 17 0:00 1:00 S
1661Rule Uruguay 1960 only - Mar 6 0:00 0 -
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