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    Another leap second
    From: Andrés Ruiz
    Date: 2008 Jul 4, 11:15 +0200

    There's somethin' wrong with the rotation of the world today I don't know what it is ...  (Aerosmith - Living on the Edge)

     

    Andrés

     

     

         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@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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