tobold.org

correct • elegant • free

△ comp.protocols.time.ntp △

◅ msntp-1.4 bails out under Linux

C9X FCD - 7.23.2.6 Normalization of broken-down times ▻

Proposed New Standard Time Scale UTS

In article <8upkma$p94$1@green.twinsun.com>,
Paul Eggert <eggert@twinsun.com> wrote:
>You are talking about UTC marker dates (e.g. 1998-12-31 23:59:60 UTC),
>but ITU Recommendation 460-4 does not require the use of marker dates.
>The standard also allows the UTC time scale to be expressed as a
>second-count since an origin, which is what I'm referring to.

Where does it say this?

In Annex I.B, the recommendation says, of TAI:

    It is in the form of a continuous scale, e.g. in days, hours, minutes
    and seconds from the origin 1 January 1958.

And in I.C, of UTC:

    It corresponds exactly in rate with TAI but differs from
    it by an integral number of seconds.

    The UTC scale is adjusted by the insertion or deletion of seconds
    (positive or negative leap-seconds) to unsure [sic] approximate
    agreement with UT1.

Then in I.2.2, we have:

    A positive leap-second begins at 23h 59m 60s and ends at 0h 0m 0s
    of the first day of the following month.  In the case of a negative
    leap-second, 23h 59m 58s will be followed one second later by 0h 0m
    0s of the first day of the following month.

Incidentally, TF.460-5 is currently in force, but I don't have a copy of
that.

Tim.
--
Tim Goodwin   | "Not ideal, I grant you, but life's
Leicester, UK | like that." -- Ian Batten

Original headers:

From: tjg@star.le.ac.uk (Tim Goodwin)
Newsgroups: comp.protocols.time.ntp,comp.std.internat
Subject: Re: Proposed New Standard Time Scale UTS
Date: 14 Nov 2000 11:51:29 -0000
Organization: A poorly-installed InterNetNews site
Message-ID: <8ur90n$61b$1@fozzie.star.le.ac.uk>
References: <8st2li$dg2$1@pegasus.csx.cam.ac.uk>
  <8uoelq$egj$1@sic.twinsun.com> <3A0FCBA2.D348E274@signature.nl>
  <8upkma$p94$1@green.twinsun.com>

△ comp.protocols.time.ntp △

◅ msntp-1.4 bails out under Linux

C9X FCD - 7.23.2.6 Normalization of broken-down times ▻