[181376] in North American Network Operators' Group

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Re: REMINDER: LEAP SECOND

daemon@ATHENA.MIT.EDU (Harlan Stenn)
Mon Jun 22 14:04:02 2015

X-Original-To: nanog@nanog.org
From: Harlan Stenn <stenn@ntp.org>
To: Tony Finch <dot@dotat.at>
In-reply-to: <alpine.LSU.2.00.1506221312330.3102@hermes-1.csi.cam.ac.uk>
Date: Mon, 22 Jun 2015 17:58:54 +0000
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org

Tony Finch writes:
> Harlan Stenn <stenn@ntp.org> wrote:
> 
> > It's a problem with POSIX, not UTC.
> >
> > UTC is monotonic.
> 
> The problems are that UTC is unpredictable, and it breaks the standard
> labelling of points in time that was used for hundreds (arguably
> thousands) of years before 1972.

You mean back when seconds were rubbery, and before the earth's
rotational speed could be easily and accurately measured, or at least
when the wobbles at that level of accuracy became so noticeable that
they could no longer be ignored?

H

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