# Argentina

# From Bob Devine (1988-01-28):
# 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 (1988-01-199):
# ARGENTINA           3 H BEHIND   UTC

# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# I am sending modifications to the Argentine time zone table...
# AR was chosen because they are the ISO letters that represent Argentina.

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	Arg	1930	only	-	Dec	 1	0:00	1:00	S
Rule	Arg	1931	only	-	Apr	 1	0:00	0	-
Rule	Arg	1931	only	-	Oct	15	0:00	1:00	S
Rule	Arg	1932	1940	-	Mar	 1	0:00	0	-
Rule	Arg	1932	1939	-	Nov	 1	0:00	1:00	S
Rule	Arg	1940	only	-	Jul	 1	0:00	1:00	S
Rule	Arg	1941	only	-	Jun	15	0:00	0	-
Rule	Arg	1941	only	-	Oct	15	0:00	1:00	S
Rule	Arg	1943	only	-	Aug	 1	0:00	0	-
Rule	Arg	1943	only	-	Oct	15	0:00	1:00	S
Rule	Arg	1946	only	-	Mar	 1	0:00	0	-
Rule	Arg	1946	only	-	Oct	 1	0:00	1:00	S
Rule	Arg	1963	only	-	Oct	 1	0:00	0	-
Rule	Arg	1963	only	-	Dec	15	0:00	1:00	S
Rule	Arg	1964	1966	-	Mar	 1	0:00	0	-
Rule	Arg	1964	1966	-	Oct	15	0:00	1:00	S
Rule	Arg	1967	only	-	Apr	 1	0:00	0	-
Rule	Arg	1967	1968	-	Oct	Sun>=1	0:00	1:00	S
Rule	Arg	1968	1969	-	Apr	Sun>=1	0:00	0	-
Rule	Arg	1974	only	-	Jan	23	0:00	1:00	S
Rule	Arg	1974	only	-	May	 1	0:00	0	-
Rule	Arg	1974	1976	-	Oct	Sun>=1	0:00	1:00	S
Rule	Arg	1975	1977	-	Apr	Sun>=1	0:00	0	-
Rule	Arg	1985	only	-	Nov	 2	0:00	1:00	S
Rule	Arg	1986	only	-	Mar	14	0:00	0	-
Rule	Arg	1986	1987	-	Oct	25	0:00	1:00	S
Rule	Arg	1987	only	-	Feb	13	0:00	0	-
Rule	Arg	1988	only	-	Feb	 7	0:00	0	-
Rule	Arg	1988	only	-	Dec	 1	0:00	1:00	S
#
# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# These corrections were contributed by InterSoft Argentina S.A.,
# obtaining the data from the:
# Talleres de Hidrografia Naval Argentina
# (Argentine Naval Hydrography Institute)
#
# Shanks stops after 1992-03-01; go with Otero.
Rule	Arg	1989	1993	-	Mar	Sun>=1	0:00	0	-
Rule	Arg	1989	1992	-	Oct	Sun>=15	0:00	1:00	S
#
# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26):
# From this moment on, the law that mandated the daylight saving
# time corrections was derogated and no more modifications
# to the time zones (for daylight saving) are now made.
#
# From Rives McDow (2000-01-10):
# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time,
# which did not result in the switch of a time zone, as they stayed 9 hours
# from the International Date Line.  On March 5, 2000, at 0:00 local time,
# Argentina will come off daylight savings time, which will bring them to 8
# hours from the International Date Line.
Rule	Arg	1999	only	-	Oct	Sun>=1	0:00	1:00	S
Rule	Arg	2000	only	-	Mar	3	0:00	0	-
#
# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04):
# The law that claimed DST for Argentina was derogated by President Fernando
# de la Rua on March 2, 2000, because it would make people spend more energy
# in the winter time, rather than less. The change took effect on March 3, 
# 2000.
# So it's back to the "old" GMT-0300 timezone.
#
# Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
#
# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC),
# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF)
Zone America/Buenos_Aires -3:53:48 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May    # Cordoba Mean Time
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
#
# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC),
# Formosa (FM), La Pampa (LP), Chubut (CH)
Zone America/Rosario	-4:02:40 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1991 Jul
			-3:00	-	ART	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
#
# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL),
# Neuquen (NQ), Rio Negro (RN)
Zone America/Cordoba	-4:16:44 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1990 Jul
			-3:00	-	ART	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
#
# Jujuy (JY)
Zone America/Jujuy	-4:21:12 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1991 Mar  3
			-4:00	-	WART	1991 Oct  6
			-4:00	1:00	WARST	1992 Mar 15
			-4:00	-	WART	1992 Oct 18
			-3:00	-	ART	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
#
# Catamarca (CT)
Zone America/Catamarca	-4:23:08 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1990 Jul
			-3:00	-	ART	1991 Jul
			-3:00	Arg	AR%sT	1992 Jul
			-3:00	-	ART	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
#
# Mendoza (MZ)
Zone America/Mendoza	-4:35:16 -	LMT	1894 Nov
			-4:16:44 -	CMT	1920 May
			-4:00	-	ART	1930 Dec
			-4:00	Arg	AR%sT	1969 Oct  5
			-3:00	Arg	AR%sT	1991 Mar  3
			-4:00	-	WART	1991 Oct 15
			-4:00	1:00	WARST	1992 Mar  1
			-4:00	-	WART	1992 Oct 18
			-3:00	-	ART	1999 Oct  3 0:00
			-4:00	Arg	AR%sT	2000 Mar  3 0:00
			-3:00	-	ART
