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-rw-r--r--timezone/southamerica43
1 files changed, 26 insertions, 17 deletions
diff --git a/timezone/southamerica b/timezone/southamerica
index b51e7cfd50..5cd58a6b17 100644
--- a/timezone/southamerica
+++ b/timezone/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.40
+# @(#)southamerica	7.41
 
 # 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
@@ -493,16 +493,26 @@ Zone America/Rio_Branco	-4:31:12 -	LMT	1914
 # Because of the same drought, the government decided to end DST later,
 # on April 3, (one-time change).
 
-# From Gwillim Law (2001-02-20):
-# I came across a Chilean on-line newspaper, La Tercera.  Its
-# <a href="http://www.tercera.cl/diario/1998/03/13/extras.html">
-# 1998-03-13 issue
-# </a>, says (my translation):
-# "At 24:00 (midnight) tomorrow (Saturday) - 22:00 in the insular
-# territory [Easter Island, Juan Fernandez, etc.] - winter time will
-# begin in the entire country."
-
-# From Paul Eggert (2001-02-21):
+# From Gwillim Law (2001-05-04):
+# I came across another article in "La Tercera" about Chilean DST.
+# <http://www.tercera.cl/diario/2000/10/13/t-extras.html>
+# It clearly confirms my earlier suggestion, that DST begins at 22:00
+# on Easter Island....  But it also seems to be saying that the
+# observance of DST in Chile began in 1966, rather than 1969 as
+# ... [Shanks] has it....
+#
+# My translation:
+#
+# "The Chilean Army has announced that summer time will begin tomorrow,
+# Saturday, October 14 in continental Chile, insular Chile, and
+# Antarctica, as provided by Supreme Decree 25 of January 11, 1966.
+# By the preceding, official time in continental Chile and Chilean
+# Antarctic, and official time in Western Insular Chile, which applies
+# to Easter Island and Sala y Gomez Island, will be set forward at
+# midnight and at 22:00, respectively, by 20 minutes."
+
+# From Paul Eggert (2001-05-04):
+# Go with this article in preference to Shanks's 1969 date for modern DST.
 # Assume this rule has been used since DST was introduced in the islands.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -510,8 +520,8 @@ Rule	Chile	1918	only	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1919	only	-	Jul	 2	0:00	0	-
 Rule	Chile	1927	1931	-	Sep	 1	0:00	1:00	S
 Rule	Chile	1928	1932	-	Apr	 1	0:00	0	-
-Rule	Chile	1969	1997	-	Oct	Sun>=9	4:00u	1:00	S
-Rule	Chile	1970	1998	-	Mar	Sun>=9	3:00u	0	-
+Rule	Chile	1966	1997	-	Oct	Sun>=9	4:00u	1:00	S
+Rule	Chile	1967	1998	-	Mar	Sun>=9	3:00u	0	-
 Rule	Chile	1998	only	-	Sep	27	4:00u	1:00	S
 Rule	Chile	1999	only	-	Apr	 4	3:00u	0	-
 Rule	Chile	1999	max	-	Oct	Sun>=9	4:00u	1:00	S
@@ -528,10 +538,9 @@ Zone Pacific/Easter	-7:17:28 -	LMT	1890	    # Mataveri
 			-7:00	Chile	EAS%sT	1982 Mar 14 # Easter I Time
 			-6:00	Chile	EAS%sT
 #
-# Whitman says Juan Fernandez Is are like America/Santiago.
-# San Ambrosio, San Felix
-# no information; probably like America/Santiago
-
+# Sala y Gomez Island is like Pacific/Easter.
+# Other Chilean locations, including Juan Fernandez Is, San Ambrosio,
+# San Felix, and Antarctic bases, are like America/Santiago.
 
 # Colombia
 # Shanks specifies 24:00 for 1992 transition times; go with IATA,