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RE: <date> tag: format and timezone

From: John Barstow <John_Barstow_at_gfsg.co.nz>
Date: 2003-05-23 00:53:49 CEST

From: Jeff Cave
>> From: John Barstow [mailto:John_Barstow@gfsg.co.nz]
>> Sent: Thursday, May 22, 2003 4:39 PM
>> Correct; the "Z" does in fact represent UTC time. Note that there is a
>> slight difference between UTC and GMT; UTC time is actively
>> maintained by
>> the keepers of the world's atomic clocks, who adjust it to account for
>> variations in the earth's rotation.

> Little off topic... could you point me to information on that. That's just
one of those
> amusing little tidbits I *have* to read up on.

The decision to introduce a leap second in UTC is the responsibility of the
International Earth Rotation Service (IERS).

There's a good overview at http://tycho.usno.navy.mil/leapsec.html; the U.S.
Naval Observatory is the primary timekeeper in the United States - if you
live in that country you might want to use their NTP servers. Lots of links
on their timekeeping page (http://tycho.usno.navy.mil/time.html)

John C Barstow

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Received on Fri May 23 00:55:25 2003

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