GMT vs UCT

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#85

From: RSX-DEV
Date: Sat, 04 Feb 1984 06:38

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Greenwich Mean Time is solar time at the the Greenwich Meridian; it varies
with the variations in the rotation of the the earth.

Coordinated Universal Time is an absolute time which can differ from GMT
by almost a second.  Leap seconds are inserted when convenient to keep UTC
within one second of GMT.

UTC is easier to track at independent locations on earth because all you
need is the proper oscillator (I think the element used recently changed).
To track GMT, you need an observatory.

I've never heard GCT used related to time (I always thought it was Grand
Central Terminal :-)
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From: RSX-DEV@DEC-MARLBORO.ARPA
Newsgroups: net.mail.headers
Subject: GMT vs UCT
Message-ID: <197@hou3c.UUCP>
Date: Sat, 4-Feb-84 01:38:00 EST
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Posted: Sat Feb  4 01:38:00 1984
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