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-rw-r--r--timezone/systemv65
1 files changed, 40 insertions, 25 deletions
diff --git a/timezone/systemv b/timezone/systemv
index a6f79d231a..c6a6b6404b 100644
--- a/timezone/systemv
+++ b/timezone/systemv
@@ -1,35 +1,50 @@
-# @(#)systemv	7.2
+# @(#)systemv	7.3
 
 # Old rules, should the need arise.
 # No attempt is made to handle Newfoundland, since it cannot be expressed
 # using the System V "TZ" scheme (half-hour offset), or anything outside
 # North America (no support for non-standard DST start/end dates), nor
-# the change in the DST rules in the US in 1987 (can't split between
-# Canada, with no changes, and the US)
+# the change in the DST rules in the US in 1987 (which occurred before
+# the old rules were written).
 #
-# Be sure to compile this *without* leap second correction for true conformance.
+# If you need the old rules, uncomment ## lines and comment-out Link lines.
+# Compile this *without* leap second correction for true conformance.
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
-Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
-Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
-Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
-Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
-Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
-Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
-Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
-Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
+## Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
+## Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
+## Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
+## Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
+## Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
+## Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
 
 # Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
-Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
-Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
-Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
-Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
-Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
-Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
-Zone	SystemV/AST4	-4:00	-		AST
-Zone	SystemV/EST5	-5:00	-		EST
-Zone	SystemV/CST6	-6:00	-		CST
-Zone	SystemV/MST7	-7:00	-		MST
-Zone	SystemV/PST8	-8:00	-		PST
-Zone	SystemV/YST9	-9:00	-		YST
-Zone	SystemV/HST10	-10:00	-		HST
+## Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
+## Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
+## Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
+## Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
+## Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
+## Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
+## Zone	SystemV/AST4	-4:00	-		AST
+## Zone	SystemV/EST5	-5:00	-		EST
+## Zone	SystemV/CST6	-6:00	-		CST
+## Zone	SystemV/MST7	-7:00	-		MST
+## Zone	SystemV/PST8	-8:00	-		PST
+## Zone	SystemV/YST9	-9:00	-		YST
+## Zone	SystemV/HST10	-10:00	-		HST
+# For now...
+Link	America/Halifax		SystemV/AST4ADT
+Link	America/New_York	SystemV/EST5EDT
+Link	America/Chicago		SystemV/CST6CDT
+Link	America/Denver		SystemV/MST7MDT
+Link	America/Los_Angeles	SystemV/PST8PDT
+Link	America/Anchorage	SystemV/YST9YDT
+Link	America/Puerto_Rico	SystemV/AST4
+Link	America/Indianapolis	SystemV/EST5
+Link	America/Regina		SystemV/CST6
+Link	America/Phoenix		SystemV/MST7
+Link	Pacific/Pitcairn	SystemV/PST8
+Link	Pacific/Gambier		SystemV/YST9
+Link	Pacific/Honolulu	SystemV/HST10