# @(#)southamerica	4.3# 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.################################################################################ 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.# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/SRule	Brazil	1987	max	-	Feb	Sat<=14	2:00	0	SRule	Brazil	1987	max	-	Oct	Sat<=28	2:00	1:00	D# Zone	NAME			GMTOFF	RULES/SAVE	FORMAT	[UNTIL]Zone	Brazil/East		-3:00	Brazil		E%sTZone	Brazil/West		-4:00	Brazil		W%sTZone	Brazil/Acre		-5:00	Brazil		A%sTZone	Brazil/DeNoronha	-2:00	Brazil		F%sT################################################################################ 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/SRule	Chile	1977	max	-	Oct	Sun>=8	0:00	1:00	DRule	Chile	1978	max	-	Mar	Sun>=8	0:00	0	S# Zone	NAME			GMTOFF	RULES/SAVE	FORMAT	[UNTIL]Zone	Chile/Continental	-4:00	Chile		C%sTZone	Chile/EasterIsland	-6:00	Chile		E%sT################################################################################ 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 Arthur David Olson (January 21, 1989):# Still don't know time of day when switch occurs.  Punt.################################################################################ 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# From Arthur David Olson (January 21, 1989):# OAG, USNO and Bob have different data.  Punt.