From 26ec4adc2acf3093acca55695900ea37a3237519 Mon Sep 17 00:00:00 2001
From: Arthur David Olson <ado@elsie>
Date: Thu, 27 Nov 1986 12:48:57 -0500
Subject: [PATCH] improvements from sun!guy

SCCS-file: systemv
SCCS-SID: 1.3
---
 systemv | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/systemv b/systemv
index dd39f91..84a4589 100644
--- a/systemv
+++ b/systemv
@@ -2,6 +2,11 @@
 
 #
 # 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)
 #
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
@@ -15,7 +20,16 @@ Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
 Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
 
 # Zone	NAME		GMTOFF	RULE/SAVE	FORMAT	[UNTIL]
+Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
 Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
-Zone	SystemV/CST5CDT	-6:00	SystemV		C%sT
-Zone	SystemV/MST5MDT	-7:00	SystemV		M%sT
-Zone	SystemV/PST5PDT	-8:00	SystemV		P%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