Plan your time accordingly.

 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 23 35
FAX       : 33 (0) 1 40 51 22 91
Internet  : services.iers@obspm.fr

                                            Paris, 9 January 2017


                                            Bulletin C 53

                                            To authorities responsible
                                            for the measurement and 
                                            distribution of time             



                         INFORMATION ON UTC - TAI


NO leap second will be introduced at the end of June 2017.
The difference between Coordinated Universal Time UTC and the 
International Atomic Time TAI is :

    from 2017 January 1, 0h UTC, until further notice : UTC-TAI = -37 s

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
                                           Director
                                           Earth Orientation Center of IERS
   Observatoire de Paris, France