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104 lines
4.0 KiB
Plaintext
104 lines
4.0 KiB
Plaintext
# @(#)southamerica 4.3
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# From Guy Harris:
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# From Official Airline Guide - Worldwide Edition (1987). Countries not
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# listed here do not observe DST, according to the OAG. Time zone names
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# are pure inventions, and none are supplied for countries not observing
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# DST; updates from natives would be appreciated. The times that DST
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# starts and ends are based on the assumption that they switch a 2AM just
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# as everybody else does.
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###############################################################################
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# Brazil
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# From Guy Harris:
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# The OAG lists October 25, 1987 and February 12, 1988 as the starting and
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# ending dates, giving them as "estimated date(s) based on previous year". We
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# infer a rule here from one example, always a dangerous practice.... Yes,
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# they really do switch on Saturday, according to the OAG.
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# "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for
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# Fernando De Noronha.
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# From Bob Devine (January 28, 1988):
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# The only information I found is that there was no DST up to 1985.
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# But there was some before 1952!
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# From U. S. Naval Observatory (January 16, 1989):
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# BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE
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# BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11,
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# BRAZIL '89 (ESTIMATED)
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# BRAZIL CENTRAL 4 H BEHIND UTC MANAUS
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# BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11,
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# BRAZIL CENTRAL '89 (ESTIMATED)
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# BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO
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# BRAZIL EAST PAULO, BRASILIA
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# BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO
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# BRAZIL PAULO, BRASILIA OCT 23,
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# BRAZIL '88-FEB 11, '89
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# BRAZIL (ESTIMATED)
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# BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO
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# BRAZIL DE NORONHA
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# BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89
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# BRAZIL (ESTIMATED)
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# BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS.
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
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Rule Brazil 1987 max - Feb Sat<=14 2:00 0 S
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Rule Brazil 1987 max - Oct Sat<=28 2:00 1:00 D
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# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
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Zone Brazil/East -3:00 Brazil E%sT
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Zone Brazil/West -4:00 Brazil W%sT
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Zone Brazil/Acre -5:00 Brazil A%sT
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Zone Brazil/DeNoronha -2:00 Brazil F%sT
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###############################################################################
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# Chile
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# From Guy Harris:
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# The OAG lists October 11, 1987 and March 12, 1988 as the starting and
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# ending dates, giving them as "estimated date(s) based on previous year."
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# From Bob Devine (January 28, 1988):
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# Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977.
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# Switch is at midnight. OAG is right.
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# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
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Rule Chile 1977 max - Oct Sun>=8 0:00 1:00 D
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Rule Chile 1978 max - Mar Sun>=8 0:00 0 S
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# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
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Zone Chile/Continental -4:00 Chile C%sT
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Zone Chile/EasterIsland -6:00 Chile E%sT
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###############################################################################
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# Paraguay
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# From Bob Devine (January 28, 1988):
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# Paraguay: First day in October to last in March. Midnight switch??
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# Since 1980.
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# From U. S. Naval Observatory (January 19, 1989):
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# PARAGUAY 4 H BEHIND UTC
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# PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89
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# From Arthur David Olson (January 21, 1989):
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# Still don't know time of day when switch occurs. Punt.
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###############################################################################
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# Argentina
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# From Bob Devine (January 28, 1988):
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# Argentina: first Sunday in October to first Sunday in April since 1976.
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# Double Summer time from 1969 to 1974. Switches at midnight.
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# From U. S. Naval Observatory (January 19, 19889):
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# ARGENTINA 3 H BEHIND UTC
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# From Arthur David Olson (January 21, 1989):
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# OAG, USNO and Bob have different data. Punt.
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