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a65a038146
Use bits in .RYEAR/.RLPDTM result to return a local time zone, TZONE (definable in SYSTEM;CONFIG). TZONE should be the integer timezone offset (hours West of UTC) Bit 4.4 => timezone known (otherwise, assume EST/EDT = 5) Bit 4.3 => sign bit of timezone offset Bits 3.5-3.1 => absolute value of timezone offset If DSTEU is defined and != 0, calculate daylight savings time according to European Union rules: - starts at 2:00 (standard time) on the last Sunday in March, - ends at 2:00 (standard time) on the last Sunday in October.