Converting local time to GMT

I need to convert the local date and time to GMT.  I believe that GetSystemTime() will return the date/time in UTC format which is nearly the same as GMT.  I need to convert that into a string such as:

"Fri, 22 May 1998 14:06:39 -0700"

for pacific time.  More specifically, I need figure out the "-0700" value for a given PC.
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dnavarroAsked:
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nietodCommented:
There is probably a better way, but you could just use the difference between GetLocalTime and GetSystemTime.
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alexoCommented:
You can call GetSystemTime() and GetLocalTime() and check the difference on the wHour and wMinute members.

--- or (better) ---

Use the GetTimeZoneInformation() function and check the Bias, StandardBias and DaylightBias members.

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nietodCommented:
Just beat me to it.
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nietodCommented:
A good answer.  You wouldn't happen to have any sample code (C or VB) which does the calculation would you?

--Dave
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dnavarroAuthor Commented:
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