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  2. MIDRANGE-L
  3. September 2002

Time zone handling

Dumb question time:

How is the time stored internally? What is the preferred method of handling
the time?

On Unix, the time is stored internally in GMT, and a timezone offset is used
to display the time in the user's local time zone. DST is handled
automatically for display, and ignored internally (since GMT has no DST).

In MVS, the recommendation is to set the system clock to GMT, and an
IPL-time parameter is used to display the time in the local timezone. DST
may or may not be handled automatically, depending on a lot of factors.

Right now, my AS/400's clock is off by an hour or so, so I need to reset it.
QUTCOFFSET is +00:00, so it thinks the time is in GMT. (It's not.) Should I
set it to my local time, or GMT? Should I set QUTCOFFSET, or leave it at 0?
What do I do when DST ends?

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