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    A positive leap second will be introduced at the end of December 2016
    From: Andrés Ruiz
    Date: 2016 Jul 6, 12:02 +0200
    FYI:


    -----Mensaje original-----
    De: bulc.iers-request{at}sympa.obspm.fr [mailto:bulc.iers-request{at}sympa.obspm.fr] En nombre de IERS EOP Product Center
    Enviado el: miércoles, 06 de julio de 2016 11:58
    Asunto: Bulletin C number 52: corrected version




         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 1 40 51 23 35


                                                  Paris, 6 July 2016
                                                               
                                                  Bulletin C 52
                                    
     To authorities responsible for the measurement and distribution of time                                         


                                       UTC TIME STEP
                                on the 1st of January 2017
                          

     A positive leap second will be introduced at the end of December 2016.
     The sequence of dates of the UTC second markers will be:
                              2016 December 31, 23h 59m 59s
                              2016 December 31, 23h 59m 60s
                              2017 January   1,  0h  0m  0s
                  
     The difference between UTC and the International Atomic Time TAI is:

      from 2015 July 1, 0h UTC, to 2016 January 1 0h UTC   : UTC-TAI = - 36s
      from 2017 January 1, 0h UTC, until further notice    : UTC-TAI = - 37s 

     
      
     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.
     
     
                                                  Christian Bizouard
                                                  Head
                                                  Earth Orientation Center of IERS
                                                  Observatoire de Paris, France


    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/
       
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