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From: tcp-ip@ucbvax.ARPA
Newsgroups: fa.tcp-ip
Subject: Time flies when you're having fun
Message-ID: <8596@ucbvax.ARPA>
Date: Fri, 28-Jun-85 14:20:42 EDT
Article-I.D.: ucbvax.8596
Posted: Fri Jun 28 14:20:42 1985
Date-Received: Sat, 29-Jun-85 04:30:51 EDT
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 21

From: mills@dcn6.arpa

Folks,

The professional clockwatchers have decided to insert a leap-second in the
broadcast time standards at 23:59:59 UT on 30 June. This happens just
about every six months and would naturally be expected to jog our klutzy
collection of radio clocks and synchronization protocols. I have declared
an Internet Clockwatch Weekend, during which I plan to deploy spy-daemons
to watch the radio and power-line clocks closely. First, I would like
to see what our radio clocks make of the transition, second what the
power grid does and third what the synchronization protocols do.

During some part of the ICW our fuzzball clocks will be unstrapped from
their respective synchronization reference and will be allowed to free-run.
Since the accuracy of the el-cheapo crystals used in the interfaces is
only about 10 ppm, this may result in systematic offsets up to a second
in timestamps returned from our swamp rats.

Dave
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