xref: /illumos-gate/usr/src/data/zoneinfo/systemv (revision 566b4223c74de6cad48ddbedf35a12d6a511c8c5)
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# Old rules, should the need arise.
5# No attempt is made to handle Newfoundland, since it cannot be expressed
6# using the System V "TZ" scheme (half-hour offset), or anything outside
7# North America (no support for non-standard DST start/end dates), nor
8# the changes in the DST rules in the US after 1976 (which occurred after
9# the old rules were written).
10#
11# If you need the old rules, uncomment ## lines.
12# Compile this *without* leap second correction for true conformance.
13
14# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
15Rule	SystemV	min	1973	-	Apr	lastSun	2:00	1:00	D
16Rule	SystemV	min	1973	-	Oct	lastSun	2:00	0	S
17Rule	SystemV	1974	only	-	Jan	6	2:00	1:00	D
18Rule	SystemV	1974	only	-	Nov	lastSun	2:00	0	S
19Rule	SystemV	1975	only	-	Feb	23	2:00	1:00	D
20Rule	SystemV	1975	only	-	Oct	lastSun	2:00	0	S
21Rule	SystemV	1976	max	-	Apr	lastSun	2:00	1:00	D
22Rule	SystemV	1976	max	-	Oct	lastSun	2:00	0	S
23
24# Zone	NAME		GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
25## Zone	SystemV/AST4ADT	-4:00	SystemV		A%sT
26## Zone	SystemV/EST5EDT	-5:00	SystemV		E%sT
27## Zone	SystemV/CST6CDT	-6:00	SystemV		C%sT
28## Zone	SystemV/MST7MDT	-7:00	SystemV		M%sT
29## Zone	SystemV/PST8PDT	-8:00	SystemV		P%sT
30## Zone	SystemV/YST9YDT	-9:00	SystemV		Y%sT
31## Zone	SystemV/AST4	-4:00	-		AST
32## Zone	SystemV/EST5	-5:00	-		EST
33## Zone	SystemV/CST6	-6:00	-		CST
34## Zone	SystemV/MST7	-7:00	-		MST
35## Zone	SystemV/PST8	-8:00	-		PST
36## Zone	SystemV/YST9	-9:00	-		YST
37## Zone	SystemV/HST10	-10:00	-		HST
38