[time-nuts] leap second end of June 2012

Bill Dailey docdailey at gmail.com
Mon Jan 16 13:46:12 UTC 2012


     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.frhttp://hpiers.obspm.fr/eop-pc

                                              Paris, 5 January 2012

                                              Bulletin C 43

                                              To authorities responsible
					      for the measurement and
					      distribution of time


                                   UTC TIME STEP
                            on the 1st of July 2012


 A positive leap second will be introduced at the end of June 2012.
 The sequence of dates of the UTC second markers will be:		
		
                          2012 June 30,     23h 59m 59s
                          2012 June 30,     23h 59m 60s
                          2012 July  1,      0h  0m  0s

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

  from 2009 January 1, 0h UTC, to 2012 July 1  0h UTC  : UTC-TAI = - 34s
  from 2012 July 1,    0h UTC, until further notice    : UTC-TAI = - 35s

 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





http://data.iers.org/products/16/14889/orig/bulletinc-043.txt

-- 
Doc

Bill Dailey
KXØO


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