[evla-sw-discuss] Fw: Bulletin C number 36 -- Leap Second Alert

[Walter Brisken]

I thought this wasn't going to happen in the course of EVLA transition, 
but it looks like it will...

Begin forwarded message:

Date: Fri, 4 Jul 2008 10:27:31 +0200
From: EOP Product Center <services.iers at obspm.fr>
Subject: Bulletin C number 36



      INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)

SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE
REFERENCE

SERVICE DE LA ROTATION TERRESTRE
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.iers at obspm.fr
http://hpiers.obspm.fr/eop-pc

                                               Paris, 4 July 2008

                                               Bulletin C 36

                                               To authorities
responsible for the measurement and
 					      distribution of
time


                                    UTC TIME STEP
                             on the 1st of January 2009


  A positive leap second will be introduced at the end of December 2008.
  The sequence of dates of the UTC second markers will
be:
                           2008 December 31,     23h 59m 59s
                           2008 December 31,     23h 59m 60s
                           2009 January   1,      0h  0m  0s

  The difference between UTC and the International Atomic Time TAI is:

   from 2006 January 1, 0h UTC, to 2009 January 1  0h UTC  : UTC-TAI = -
33s from 2009 January 1, 0h UTC, until further notice       : UTC-TAI =
- 34s
  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
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