On 05/27/2015 05:05 AM, Mark Morgan Lloyd wrote:
Gordon Cooper wrote:
We were taught that 24.00 did not exist. Time went from 23.59
to 00.00. The same rule can be applied to 11.59 am & pm.
Except where there's a leap second.
speaking of which, guess what is coming up...
[quote]
Date: Mon, 05 Jan 2015 14:25:49 +0100
From: IERS EOP Product Center <services.i...@obspm.fr>
Reply-To: IERS EOP Product Center <services.i...@obspm.fr>
To: bulc.i...@obspm.fr
INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
SERVICE DE LA ROTATION TERRESTRE DE L'IERS
OBSERVATOIRE DE PARIS
61, Av. de l'Observatoire 75014 PARIS (France)
Tel. : 33 (0) 1 40 51 22 26
FAX : 33 (0) 1 40 51 22 91
e-mail : services.i...@obspm.fr
http://hpiers.obspm.fr/eop-pc
Paris, 5 January 2015
Bulletin C 49
To authorities responsible for the measurement and distribution of
time
UTC TIME STEP
on the 1st of July 2015
A positive leap second will be introduced at the end of June 2015.
The sequence of dates of the UTC second markers will be:
2015 June 30, 23h 59m 59s
2015 June 30, 23h 59m 60s
2015 July 1, 0h 0m 0s
The difference between UTC and the International Atomic Time TAI is:
from 2012 July 1, 0h UTC, to 2015 July 1 0h UTC : UTC-TAI = - 35s
from 2015 July 1, 0h UTC, until further notice : UTC-TAI = - 36s
Leap seconds can be introduced in UTC at the end of the months of
December
or June, depending on the evolution of UT1-TAI. Bulletin C is mailed
every
six months, either to announce a time step in UTC or to confirm that
there
will be no time step at the next possible date.
Daniel Gambis
Head
Earth Orientation Center
of IERS
Observatoire de Paris, France
[/quote]
;) O:)
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