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-rw-r--r--time/southamerica54
1 files changed, 34 insertions, 20 deletions
diff --git a/time/southamerica b/time/southamerica
index b40ce559a3..52da58f4f2 100644
--- a/time/southamerica
+++ b/time/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica 7.6
+# @(#)southamerica 7.8
# 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
@@ -14,17 +14,18 @@
# 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
+# std dst
+# LMT Local Mean Time
+# -2:00 FST FDT Fernando de Noronha
+# -3:00 EST EDT Eastern South America (conflicts with -5:00)
+# -3:00 ARST ARDT Argentina
+# -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.
@@ -49,6 +50,10 @@
# From U. S. Naval Observatory (January 19, 19889):
# ARGENTINA 3 H BEHIND UTC
+# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
+# I am sending modifications to the Argentinian 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 D
Rule Arg 1931 only - Apr 1 0:00 0 S
@@ -79,19 +84,28 @@ 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.
+#
+# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
+# These corrections were contributed by InterSoft Argentina S.A.,
+# obtaining the data from the:
+# Talleres de Hidrografia Naval Argentina
+# (Argentinian Naval Hydrography Institute)
+#
+# Shanks gives 1989 Mar 16 and stops after 1990 Mar 4; go with Otero.
+Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 S
+Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 D
+#
+# From Hernan G. Otero <hernan@isoft.com.ar> (June 26, 1995):
+# 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.
+#
# 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
+ -3:00 Arg AR%sT
# Bolivia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]