[Progress Communities] [Progress OpenEdge ABL] Forum Post: RE: DATETIME-TZ function handling DST

[Robin Brown]

When the DATETIME-TZ function is not supplied a timezone, we calculate the timezone using the c-runtime localtime function: struct tm *localtime(const time_t *timer) The tm structure has a member named tm_isdst, indicating whether the date/time value is in daylight savings time. The OS provides this information.

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