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  3. September 2007

RE: Converting Unix Jan 01 1970 UTC epoch datetime stamp to iSeries ESTdatetime stamp

On Mon, 17 Sep 2007, Mike Cunningham wrote:

I did find similar code but this looks to me like it will adjust the time based on the current value in QUTCOFFSET not the value it was at the time the unix timestamp was made. So if "today" is December 1 and the time difference is -05:00 but the unix stamp was made June 1 when the offset was only -04:00 the result will be off 1 hour won't it?

There is a C API called localtime that given the time in seconds since the UNIX epoch will return the date and time in the local time zone appropriate for that time. So if you are in a timezone which changes between standard and daylight savings time and you give localtime() a time which is would have a different UTC offset than is currently active it will use the UTC offset that is appropriate.

James Rich

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