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Hello Neil,

You wrote:
>It's based on Universal Time Coordinated (UTC) not Greenwich Mean Time
>(GMT).

UTC is required to be within 1 second of GMT so it is essentially the same
thing -- at least with the accuracy required by business applications.

>As the UK observes BST (British Summer Time - not BSE the mad cow thing)
>the time in Greenwich will move ahead one hour in the Spring (the week
>before North America does, Europe & North America can't even agreen on a
>start date for this stupid Daylight Savings Time - at least they agree on
>the ending date) but UTC doesn't change.  SO - If you set QUTCOFFSET and
>your location observes DST, you need to alter QUTCOFFSET as well in the
>Spring (-1 hour) and the fall (+1 hour) when you alter your clock.

Although Greenwich local time moves an hour (as does local time wherever
daylight savings time/summer time is implemented) GMT itself does not move.
Regardless, because the AS/400 uses the local time for system time the UTC
offset must be changed when the system time is changed.

The primary difference between GMT and UTC is that GMT is administered by
the British and UTC is administered by the French.  The move from GMT to UTC
was probably some concesion forced on the UK by the EU in return for
reducing some agricultural excess (e.g., UK butter mountain or some such).

Regards,
Simon Coulter.

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