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Diffstat (limited to 'time/southamerica')
| -rw-r--r-- | time/southamerica | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/time/southamerica b/time/southamerica new file mode 100644 index 0000000000..b40ce559a3 --- /dev/null +++ b/time/southamerica @@ -0,0 +1,397 @@ +# @(#)southamerica 7.6 + +# This data is by no means authoritative; if you think you know better, +# go ahead and edit the file (and please send any changes to +# tz@elsie.nci.nih.gov for general use in the future). + +# From Paul Eggert <eggert@twinsun.com> (November 18, 1993): +# A good source for time zone historical data outside the U.S. is +# Thomas G. Shanks, The International Atlas (3rd edition), +# San Diego: ACS Publications, Inc. (1991). +# Except where otherwise noted, it is the source for the data below. +# +# I invented the abbreviations marked `*' in the following table; +# the rest are from earlier versions of this file, or from other sources. +# Some of these are just plausible excuses for common English abbreviations. +# Corrections are welcome! +# std dst +# LMT Local Mean Time +# -2:00 FST FDT Fernando de Noronha +# -3:00 EST EDT Eastern South America (conflicts with -5:00) +# -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic +# -4:00 CST CDT Chile (conflicts with -6:00) +# -4:00 WST WDT Western Brazil +# -5:00 AST ADT Acre (conflicts with -4:00) +# -5:00 EST EDT Eastern, Ecuador* +# -6:00 CST CDT Archipelago of Columbus*, Central +# -7:00 MST MDT Mataveri*, Mountain +# +# See the `africa' file for Zone naming conventions. + +# From Guy Harris: +# From Official Airline Guide - Worldwide Edition (1987). Countries not +# listed here do not observe DST, according to the OAG. Time zone names +# are pure inventions, and none are supplied for countries not observing +# DST; updates from natives would be appreciated. The times that DST +# starts and ends are based on the assumption that they switch a 2AM just +# as everybody else does. + +############################################################################### + +############################################################################### + +# Argentina + +# From Bob Devine (January 28, 1988): +# Argentina: first Sunday in October to first Sunday in April since 1976. +# Double Summer time from 1969 to 1974. Switches at midnight. + +# From U. S. Naval Observatory (January 19, 19889): +# ARGENTINA 3 H BEHIND UTC + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Arg 1930 only - Dec 1 0:00 1:00 D +Rule Arg 1931 only - Apr 1 0:00 0 S +Rule Arg 1931 only - Oct 15 0:00 1:00 D +Rule Arg 1932 1940 - Mar 1 0:00 0 S +Rule Arg 1932 1939 - Nov 1 0:00 1:00 D +Rule Arg 1940 only - Jul 1 0:00 1:00 D +Rule Arg 1941 only - Jun 15 0:00 0 S +Rule Arg 1941 only - Oct 15 0:00 1:00 D +Rule Arg 1943 only - Aug 1 0:00 0 S +Rule Arg 1943 only - Oct 15 0:00 1:00 D +Rule Arg 1946 only - Mar 1 0:00 0 S +Rule Arg 1946 only - Oct 1 0:00 1:00 D +Rule Arg 1963 only - Oct 1 0:00 0 S +Rule Arg 1963 only - Dec 15 0:00 1:00 D +Rule Arg 1964 1966 - Mar 1 0:00 0 S +Rule Arg 1964 1966 - Oct 15 0:00 1:00 D +Rule Arg 1967 only - Apr 1 0:00 0 S +Rule Arg 1967 1968 - Oct Sun<=7 0:00 1:00 D +Rule Arg 1968 1969 - Apr Sun<=7 0:00 0 S +Rule Arg 1974 only - Jan 23 0:00 1:00 D +Rule Arg 1974 only - May 1 0:00 0 S +Rule Arg 1974 1976 - Oct Sun<=7 0:00 1:00 D +Rule Arg 1975 1977 - Apr Sun<=7 0:00 0 S +Rule Arg 1985 only - Nov 2 0:00 1:00 D +Rule Arg 1986 only - Mar 14 0:00 0 S +Rule Arg 1986 1987 - Oct 25 0:00 1:00 D +Rule Arg 1987 only - Feb 13 0:00 0 S +Rule Arg 1988 only - Feb 7 0:00 0 S +Rule Arg 1988 only - Dec 1 0:00 1:00 D +Rule Arg 1989 only - Mar 16 0:00 0 S +Rule Arg 1989 only - Oct 15 0:00 1:00 D +Rule Arg 1990 only - Mar 4 0:00 0 S +# _The Economist_ (8 Jan 1994, p 42) reports that Argentina +# had DST in 1991-2 and 1992-3, but not in 1990-1 or in 1993-4. +# It has something to do with electricity companies meeting demand in summer. +# We don't know the 1991-3 transition times, unfortunately. +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov + -4:17 - CMT 1920 May # Cordoba Mean Time + -4:00 - AST 1930 Dec + -4:00 Arg A%sT 1969 Oct 5 + -3:00 Arg E%sT + +# Bolivia +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/La_Paz -4:32:36 - LMT 1890 + -4:33 - LPMT 1931 Oct 15 # La Paz Mean Time + -4:33 1:00 LPDT 1932 Mar 21 + -4:00 - AST + +# Brazil + +# From Guy Harris: +# The OAG lists October 25, 1987 and February 12, 1988 as the starting and +# ending dates, giving them as "estimated date(s) based on previous year". We +# infer a rule here from one example, always a dangerous practice.... Yes, +# they really do switch on Saturday, according to the OAG. +# "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for +# Fernando De Noronha. + +# From Bob Devine (January 28, 1988): +# The only information I found is that there was no DST up to 1985. +# But there was some before 1952! + +# From U. S. Naval Observatory (January 16, 1989): +# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE +# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11, +# BRAZIL '89 (ESTIMATED) +# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS +# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11, +# BRAZIL CENTRAL '89 (ESTIMATED) +# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO +# BRAZIL EAST PAULO, BRASILIA +# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO +# BRAZIL PAULO, BRASILIA OCT 23, +# BRAZIL '88-FEB 11, '89 +# BRAZIL (ESTIMATED) +# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO +# BRAZIL DE NORONHA +# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89 +# BRAZIL (ESTIMATED) +# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS. + +# From Paul Eggert <eggert@twinsun.com> (November 18, 1993): +# The mayor of Rio recently attempted to change the time zone rules +# just in his city, in order to leave more summer time for the tourist trade. +# The rule change lasted only part of the day; +# the federal government refused to follow the city's rules, and business +# was in a chaos, so the mayor backed down that afternoon. +# Shanks claims Acre stopped observing DST after 1988 Feb 7, but it +# could just be that his table ran out of room. We're extrapolating +# about time zone changes after 1990 Feb 11. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Brazil 1914 only - Jan 1 0:00 0 S +Rule Brazil 1931 only - Oct 3 11:00 1 D +Rule Brazil 1932 1933 - Apr 1 0:00 0 S +Rule Brazil 1932 only - Oct 3 0:00 1 D +Rule Brazil 1949 1952 - Dec 1 0:00 1 D +Rule Brazil 1950 only - Apr 16 0:00 0 S +Rule Brazil 1951 1953 - Apr 1 0:00 0 S +Rule Brazil 1963 only - Dec 9 0:00 1 D +Rule Brazil 1964 only - Mar 1 0:00 0 S +Rule Brazil 1965 only - Jan 31 0:00 1 D +Rule Brazil 1965 only - Apr 1 0:00 0 S +Rule Brazil 1965 only - Dec 1 0:00 1 D +Rule Brazil 1966 1968 - Mar 1 0:00 0 S +Rule Brazil 1966 1967 - Nov 1 0:00 1 D +Rule Brazil 1985 only - Nov 2 0:00 1 D +Rule Brazil 1986 only - Mar 15 0:00 0 S +Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1 D +Rule Brazil 1987 only - Feb 14 0:00 0 S +Rule Brazil 1988 only - Feb 7 0:00 0 S +Rule Brazil 1989 only - Jan 22 0:00 0 S +Rule Brazil 1988 max - Oct Sun>=15 0:00 1 D +Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Noronha -2:09:40 - LMT 1914 + -2:00 - FST 1963 Dec 9 + -2:00 Brazil F%sT +Zone America/Sao_Paulo -3:06:28 - LMT 1914 + -3:00 Brazil E%sT +Zone America/Manaus -4:00:04 - LMT 1914 + -4:00 - WST 1963 Dec 9 + -4:00 Brazil W%sT +# Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too. +Zone America/Porto_Acre -4:31:12 - LMT 1914 + -5:00 - AST 1963 Dec 9 + -5:00 Brazil A%sT +# +# Martin Vaz and Trinidade are like America/Noronha. + + +# Chile + +# From Guy Harris: +# The OAG lists October 11, 1987 and March 12, 1988 as the starting and +# ending dates, giving them as "estimated date(s) based on previous year." + +# From Bob Devine (January 28, 1988): +# Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977. +# Switch is at midnight. OAG is right. + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Chile 1918 only - Sep 1 0:00 1:00 D +Rule Chile 1919 only - Jul 2 0:00 0 S +Rule Chile 1927 1931 - Sep 1 0:00 1:00 D +Rule Chile 1928 1932 - Apr 1 0:00 0 S +Rule Chile 1969 max - Oct Sun>=8 0:00 1:00 D +Rule Chile 1970 max - Mar Sun>=8 0:00 0 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Santiago -4:42:40 - LMT 1890 + -4:43 - SMT 1910 # Santiago Mean Time + -5:00 Chile C%sT 1932 Sep + -4:00 Chile C%sT +Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri + -7:17 - MMT 1932 Sep # Mataveri Mean Time + -7:00 Chile M%sT 1982 Mar 14 + -6:00 Chile C%sT +# +# Whitman says Juan Fernandez Is are like America/Santiago. +# San Ambrosio, San Felix +# no information; probably like America/Santiago + + +# Colombia +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 + -4:56 - BMT 1914 Nov 23 # Bogota Mean Time + -5:00 - EST +# Malpelo, Providencia, San Andres +# no information; probably like America/Bogota + +# Curacao +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad + -4:30 - NAST 1965 # Netherlands Antilles + -4:00 - AST + +# Ecuador +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Guayaquil -5:19:20 - LMT 1890 + -5:14 - QMT 1931 # Quito Mean Time + -5:00 - EST +Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno + -5:00 - EST 1986 + -6:00 - CST + +# Falklands +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Falk 1912 only - Mar 12 0:00 0 S +Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 D +Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 S +Rule Falk 1939 only - Oct 1 0:00 1:00 D +Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 D +Rule Falk 1943 only - Jan 1 0:00 0 S +Rule Falk 1983 only - Sep lastSun 0:00 1:00 D +Rule Falk 1984 1985 - Apr lastSun 0:00 0 S +Rule Falk 1984 only - Sep 16 0:00 1:00 D +Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 D +Rule Falk 1986 max - Apr Sun>=16 0:00 0 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Atlantic/Stanley -3:51:24 - LMT 1890 + -3:51 - SMT 1912 Mar 12 # Stanley Mean Time + -4:00 Falk A%sT 1983 May + -3:00 Falk E%sT 1985 Sep 15 + -4:00 Falk A%sT + +# French Guiana +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Cayenne -3:29:20 - LMT 1911 Jul + -4:00 - AST 1967 Oct + -3:00 - EST + +# Guyana +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown + -3:45 - BGST 1975 Jul 31 # British Guiana ST + -3:00 - EST + + +# Paraguay + +# From Bob Devine (January 28, 1988): +# Paraguay: First day in October to last in March. Midnight switch?? +# Since 1980. + +# From U. S. Naval Observatory (January 19, 1989): +# PARAGUAY 4 H BEHIND UTC +# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89 + +# From Shanks (1991): +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Para 1974 only - Apr 1 0:00 0 S +Rule Para 1975 1978 - Oct 1 0:00 1:00 D +Rule Para 1975 1978 - Mar 1 0:00 0 S +# Shanks says 1979 was all DST. +Rule Para 1980 max - Apr 1 0:00 0 S +Rule Para 1980 1988 - Oct 1 0:00 1:00 D +Rule Para 1989 only - Oct 22 0:00 1:00 D +Rule Para 1990 max - Oct 1 0:00 1:00 D +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Asuncion -3:50:40 - LMT 1890 + -3:51 - AMT 1931 Oct 10 # Asuncion Mean Time + -4:00 - AST 1972 Oct + -3:00 - EST 1974 Apr + -4:00 Para A%sT + +# Peru +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Peru 1908 only - Jul 28 0:00 0 S +Rule Peru 1938 only - Jan 1 0:00 1:00 D +Rule Peru 1938 only - Apr 1 0:00 0 S +Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 D +Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 S +Rule Peru 1987 only - Jan 1 0:00 1:00 D +Rule Peru 1987 only - Apr 1 0:00 0 S +Rule Peru 1990 only - Jan 1 0:00 1:00 D +Rule Peru 1990 only - Apr 1 0:00 0 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Lima -5:08:12 - LMT 1890 + -5:09 - LMT 1908 Jul 28 + -5:00 Peru E%sT + +# South Georgia +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken + -2:00 - FST + +# South Sandwich Is +# no information + +# Suriname +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Paramaribo -3:40:40 - LMT 1911 + -3:40:52 - PMT 1935 # Paramaribo Mean Time + -3:40:36 - PMT 1945 Oct # The capital moved? + -3:30 - DGST 1984 Oct # Dutch Guiana Std Time + -3:00 - EST + +# Trinidad and Tobago +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 + -4:00 - AST + +# Uruguay +# From Paul Eggert <eggert@twinsun.com> (November 18, 1993): +# Uruguay wins the prize for the strangest peacetime manipulation of the rules. +# Your guess is as good as mine for what happened after 1989. +# From Shanks (1991): +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +Rule Uruguay 1920 only - May 1 0:00 0 S +# Whitman gives 1923 Oct 1; go with Shanks. +Rule Uruguay 1923 only - Oct 2 0:00 0:30 HD +Rule Uruguay 1924 1926 - Apr 1 0:00 0 S +Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HD +Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HD +# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman. +Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 S +Rule Uruguay 1936 only - Nov 1 0:00 0:30 HD +Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 S +# Whitman gives 1937 Oct 3; go with Shanks. +Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HD +# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, +# and 1943 Apr 13 ``to present time''; go with Shanks. +Rule Uruguay 1941 only - Aug 1 0:00 0 S +Rule Uruguay 1942 only - Jan 1 0:00 0:30 HD +Rule Uruguay 1942 only - Dec 14 0:00 1:00 D +Rule Uruguay 1943 only - Mar 14 0:00 0 S +Rule Uruguay 1959 only - May 24 0:00 1:00 D +Rule Uruguay 1959 only - Nov 15 0:00 0 S +Rule Uruguay 1960 only - Jan 17 0:00 1:00 D +Rule Uruguay 1960 only - Mar 6 0:00 0 S +Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 D +Rule Uruguay 1965 only - Sep 26 0:00 0 S +Rule Uruguay 1966 1967 - Oct 31 0:00 0 S +Rule Uruguay 1968 1970 - May 27 0:00 0:30 HD +Rule Uruguay 1968 1970 - Dec 2 0:00 0 S +Rule Uruguay 1972 only - Apr 24 0:00 1:00 D +Rule Uruguay 1972 only - Aug 15 0:00 0 S +Rule Uruguay 1974 only - Mar 10 0:00 0:30 HD +Rule Uruguay 1974 only - Dec 22 0:00 1:00 D +Rule Uruguay 1976 only - Oct 1 0:00 0 S +Rule Uruguay 1977 only - Dec 4 0:00 1:00 D +Rule Uruguay 1978 only - Apr 1 0:00 0 S +Rule Uruguay 1979 only - Oct 1 0:00 1:00 D +Rule Uruguay 1980 only - May 1 0:00 0 S +Rule Uruguay 1987 only - Dec 14 0:00 1:00 D +Rule Uruguay 1988 only - Mar 14 0:00 0 S +Rule Uruguay 1988 only - Dec 11 0:00 1:00 D +Rule Uruguay 1989 only - Mar 12 0:00 0 S +Rule Uruguay 1989 only - Oct 29 0:00 1:00 D +Rule Uruguay 1990 only - Mar 4 0:00 0 S +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 + -3:45 - MMT 1920 May 1 # Montevideo MT + -3:30 Uruguay U%sT 1942 Dec 14 # Uruguay ST + -3:00 Uruguay E%sT + +# Venezuela +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone America/Caracas -4:27:44 - LMT 1890 + -4:28 - CMT 1912 Feb 12 # Caracas Mean Time + -4:30 - VZT 1965 # Venezuela Time + -4:00 - AST |