Most systems today keep internal time in GMT / UTC/ or whatever acronym
you have for it, and convert for display. This functionality is
generally exposed as system calls.

Since most of my current programming is java, I use the java functions.
However, at one time I had picked up a Delphi UTC conversion package off
the internet that was just a thin wrapper around Windows API calls.

For C programming, start with "man timezone".

<The following Blatantly plagarized from the man timezone page ... >

SEE ALSO
ctime() , localtime() , mktime() , strftime() , the Base
Definitions volume of IEEE Std 1003.1-2001, Chapter 8, Environment
Variables, <time.h>

On Tue, 2005-06-28 at 09:46 +0000, willogibbo wrote:
> Adam,
>
> Thanks. Yes, I was beginning to realise that a UDF is what's required
> - I haven't yet had a go at UDFs so was hoping there might be an
> easier way!
>
> The server I'm running is Linux based, but I presume that there will
> be ways of getting UTC, timezone setting & hence local time info from
> Linux?
>
> Will
>
>
>
> >
> > Hello Will,
> >
> > The solution is not simple, however it can be done using UDF's. If you
> > are using a windows setup, the Timezone information can be read from
> > the registry.
> >
> > The parameters I pass into the UDF function are the Timezone name and
> > local time and it returns the gmt time as a timestamp. But it gets
> > stored the same way as any other timestamp field.
> >
> > Adam
>
>
>
>
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>
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>
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>
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