1# @(#)systemv 7.2
2
3# Old rules, should the need arise.
4# No attempt is made to handle Newfoundland, since it cannot be expressed
5# using the System V "TZ" scheme (half-hour offset), or anything outside
6# North America (no support for non-standard DST start/end dates), nor
7# the change in the DST rules in the US in 1987 (can't split between
8# Canada, with no changes, and the US)
9#
10# Be sure to compile this *without* leap second correction for true conformance.
11
12# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
13Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
14Rule SystemV min 1973 - Oct lastSun 2:00 0 S
15Rule SystemV 1974 only - Jan 6 2:00 1:00 D
16Rule SystemV 1974 only - Nov lastSun 2:00 0 S
17Rule SystemV 1975 only - Feb 23 2:00 1:00 D
18Rule SystemV 1975 only - Oct lastSun 2:00 0 S
19Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
20Rule SystemV 1976 max - Oct lastSun 2:00 0 S
21
22# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
23Zone SystemV/AST4ADT -4:00 SystemV A%sT
24Zone SystemV/EST5EDT -5:00 SystemV E%sT
25Zone SystemV/CST6CDT -6:00 SystemV C%sT
26Zone SystemV/MST7MDT -7:00 SystemV M%sT
27Zone SystemV/PST8PDT -8:00 SystemV P%sT
28Zone SystemV/YST9YDT -9:00 SystemV Y%sT
29Zone SystemV/AST4 -4:00 - AST
30Zone SystemV/EST5 -5:00 - EST
31Zone SystemV/CST6 -6:00 - CST
32Zone SystemV/MST7 -7:00 - MST
33Zone SystemV/PST8 -8:00 - PST
34Zone SystemV/YST9 -9:00 - YST
35Zone SystemV/HST10 -10:00 - HST
2
3# Old rules, should the need arise.
4# No attempt is made to handle Newfoundland, since it cannot be expressed
5# using the System V "TZ" scheme (half-hour offset), or anything outside
6# North America (no support for non-standard DST start/end dates), nor
7# the change in the DST rules in the US in 1987 (can't split between
8# Canada, with no changes, and the US)
9#
10# Be sure to compile this *without* leap second correction for true conformance.
11
12# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
13Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
14Rule SystemV min 1973 - Oct lastSun 2:00 0 S
15Rule SystemV 1974 only - Jan 6 2:00 1:00 D
16Rule SystemV 1974 only - Nov lastSun 2:00 0 S
17Rule SystemV 1975 only - Feb 23 2:00 1:00 D
18Rule SystemV 1975 only - Oct lastSun 2:00 0 S
19Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
20Rule SystemV 1976 max - Oct lastSun 2:00 0 S
21
22# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
23Zone SystemV/AST4ADT -4:00 SystemV A%sT
24Zone SystemV/EST5EDT -5:00 SystemV E%sT
25Zone SystemV/CST6CDT -6:00 SystemV C%sT
26Zone SystemV/MST7MDT -7:00 SystemV M%sT
27Zone SystemV/PST8PDT -8:00 SystemV P%sT
28Zone SystemV/YST9YDT -9:00 SystemV Y%sT
29Zone SystemV/AST4 -4:00 - AST
30Zone SystemV/EST5 -5:00 - EST
31Zone SystemV/CST6 -6:00 - CST
32Zone SystemV/MST7 -7:00 - MST
33Zone SystemV/PST8 -8:00 - PST
34Zone SystemV/YST9 -9:00 - YST
35Zone SystemV/HST10 -10:00 - HST