1# @(#)systemv 7.3
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 (which occurred before
8# the old rules were written).
9#
10# If you need the old rules, uncomment ## lines and comment-out Link lines.
11# Compile this *without* leap second correction for true conformance.
12
13# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
14## Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
15## Rule SystemV min 1973 - Oct lastSun 2:00 0 S
16## Rule SystemV 1974 only - Jan 6 2:00 1:00 D
17## Rule SystemV 1974 only - Nov lastSun 2:00 0 S
18## Rule SystemV 1975 only - Feb 23 2:00 1:00 D
19## Rule SystemV 1975 only - Oct lastSun 2:00 0 S
20## Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
21## Rule SystemV 1976 max - Oct lastSun 2:00 0 S
22
23# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
24## Zone SystemV/AST4ADT -4:00 SystemV A%sT
25## Zone SystemV/EST5EDT -5:00 SystemV E%sT
26## Zone SystemV/CST6CDT -6:00 SystemV C%sT
27## Zone SystemV/MST7MDT -7:00 SystemV M%sT
28## Zone SystemV/PST8PDT -8:00 SystemV P%sT
29## Zone SystemV/YST9YDT -9:00 SystemV Y%sT
30## Zone SystemV/AST4 -4:00 - AST
31## Zone SystemV/EST5 -5:00 - EST
32## Zone SystemV/CST6 -6:00 - CST
33## Zone SystemV/MST7 -7:00 - MST
34## Zone SystemV/PST8 -8:00 - PST
35## Zone SystemV/YST9 -9:00 - YST
36## Zone SystemV/HST10 -10:00 - HST
37# For now...
38Link America/Halifax SystemV/AST4ADT
39Link America/New_York SystemV/EST5EDT
40Link America/Chicago SystemV/CST6CDT
41Link America/Denver SystemV/MST7MDT
42Link America/Los_Angeles SystemV/PST8PDT
43Link America/Anchorage SystemV/YST9YDT
44Link America/Puerto_Rico SystemV/AST4
45Link America/Indianapolis SystemV/EST5
46Link America/Regina SystemV/CST6
47Link America/Phoenix SystemV/MST7
48Link Pacific/Pitcairn SystemV/PST8
49Link Pacific/Gambier SystemV/YST9
50Link Pacific/Honolulu SystemV/HST10
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 (which occurred before
8# the old rules were written).
9#
10# If you need the old rules, uncomment ## lines and comment-out Link lines.
11# Compile this *without* leap second correction for true conformance.
12
13# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
14## Rule SystemV min 1973 - Apr lastSun 2:00 1:00 D
15## Rule SystemV min 1973 - Oct lastSun 2:00 0 S
16## Rule SystemV 1974 only - Jan 6 2:00 1:00 D
17## Rule SystemV 1974 only - Nov lastSun 2:00 0 S
18## Rule SystemV 1975 only - Feb 23 2:00 1:00 D
19## Rule SystemV 1975 only - Oct lastSun 2:00 0 S
20## Rule SystemV 1976 max - Apr lastSun 2:00 1:00 D
21## Rule SystemV 1976 max - Oct lastSun 2:00 0 S
22
23# Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL]
24## Zone SystemV/AST4ADT -4:00 SystemV A%sT
25## Zone SystemV/EST5EDT -5:00 SystemV E%sT
26## Zone SystemV/CST6CDT -6:00 SystemV C%sT
27## Zone SystemV/MST7MDT -7:00 SystemV M%sT
28## Zone SystemV/PST8PDT -8:00 SystemV P%sT
29## Zone SystemV/YST9YDT -9:00 SystemV Y%sT
30## Zone SystemV/AST4 -4:00 - AST
31## Zone SystemV/EST5 -5:00 - EST
32## Zone SystemV/CST6 -6:00 - CST
33## Zone SystemV/MST7 -7:00 - MST
34## Zone SystemV/PST8 -8:00 - PST
35## Zone SystemV/YST9 -9:00 - YST
36## Zone SystemV/HST10 -10:00 - HST
37# For now...
38Link America/Halifax SystemV/AST4ADT
39Link America/New_York SystemV/EST5EDT
40Link America/Chicago SystemV/CST6CDT
41Link America/Denver SystemV/MST7MDT
42Link America/Los_Angeles SystemV/PST8PDT
43Link America/Anchorage SystemV/YST9YDT
44Link America/Puerto_Rico SystemV/AST4
45Link America/Indianapolis SystemV/EST5
46Link America/Regina SystemV/CST6
47Link America/Phoenix SystemV/MST7
48Link Pacific/Pitcairn SystemV/PST8
49Link Pacific/Gambier SystemV/YST9
50Link Pacific/Honolulu SystemV/HST10