📄 systemv
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# @(#)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 (which occurred before# the old rules were written).## 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# 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# For now...Link America/Halifax SystemV/AST4ADTLink America/New_York SystemV/EST5EDTLink America/Chicago SystemV/CST6CDTLink America/Denver SystemV/MST7MDTLink America/Los_Angeles SystemV/PST8PDTLink America/Anchorage SystemV/YST9YDTLink America/Puerto_Rico SystemV/AST4Link America/Indianapolis SystemV/EST5Link America/Regina SystemV/CST6Link America/Phoenix SystemV/MST7Link Pacific/Pitcairn SystemV/PST8Link Pacific/Gambier SystemV/YST9Link Pacific/Honolulu SystemV/HST10
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