[ntp:questions] Leap second to be introduced in June

Marco Marongiu brontolinux at gmail.com
Mon Jan 5 14:29:27 UTC 2015


Get ready, fellows. It's coming again.

-- bronto


-------- Forwarded Message --------
Subject: Bulletin C number 49
Date: Mon, 05 Jan 2015 14:25:49 +0100
From: IERS EOP Product Center <services.iers at obspm.fr>
Reply-To: IERS EOP Product Center <services.iers at obspm.fr>
To: bulc.iers at obspm.fr




     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 (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, 5 January 2015

                                              Bulletin C 49

 To authorities responsible for the measurement and distribution of time



                                   UTC TIME STEP
                            on the 1st of July 2015


 A positive leap second will be introduced at the end of June 2015.
 The sequence of dates of the UTC second markers will be:		
		
                          2015 June 30,     23h 59m 59s
                          2015 June 30,     23h 59m 60s
                          2015 July  1,      0h  0m  0s

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

  from 2012 July 1,    0h UTC, to 2015 July 1  0h UTC  : UTC-TAI = - 35s
  from 2015 July 1,    0h UTC, until further notice    : UTC-TAI = - 36s



 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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