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-rw-r--r--time/southamerica6
1 files changed, 4 insertions, 2 deletions
diff --git a/time/southamerica b/time/southamerica
index 927f71638a..09e0aa6d28 100644
--- a/time/southamerica
+++ b/time/southamerica
@@ -1,4 +1,4 @@
-# @(#)southamerica	7.17
+# @(#)southamerica	7.18
 
 # 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
@@ -533,7 +533,9 @@ Rule	Uruguay	1989	only	-	Mar	12	 0:00	0	-
 Rule	Uruguay	1989	only	-	Oct	29	 0:00	1:00	S
 Rule	Uruguay	1990	1992	-	Mar	Sun>=1	 0:00	0	-
 Rule	Uruguay	1990	1991	-	Oct	Sun>=21	 0:00	1:00	S
-Rule	Uruguay	1992	1993	-	Oct	Sun>=15	 0:00	1:00	S
+# Shanks's 4th edition (1995) says no DST was observed in 1990/1 and 1991/2,
+# and that 1992/3's DST was from 10-25 to 03-01.  Go with IATA.
+Rule	Uruguay	1992	only	-	Oct	18	 0:00	1:00	S
 Rule	Uruguay	1993	only	-	Feb	28	 0:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Montevideo	-3:44:44 -	LMT	1898 Jun 28