***************************************************************************= *** dorismail 09-Jan-2015 23:24:09 Message No 0955 ***************************************************************************= *** Author: "Lemoine, Frank G. (GSFC-6980)" Subject: Announcement by IERS of Leap Second to be introduced in UTC on June =20=20=20=20 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 =3D - 35s from 2015 July 1, 0h UTC, until further notice : UTC-TAI =3D - 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 ever= y six months, either to announce a time step in UTC or to confirm that the= re will be no time step at the next possible date. Daniel Gambis Head Earth Orientation Center of I= ERS Observatoire de Paris, France 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=20 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 Cliquez sur l'url suivante=20 https://www.mailcontrol.com/sr/BdyIpcSy1arGX2PQPOmvUnS2K3gDJIy662krrvPPhG3d= 2pgICZ+Lme+XBsNTSlGCLG+AURmxu!Ic91rCvtNOsA=3D=3D=20=20 si ce message est ind=E9sirable (pourriel). Please do not reply directly to this message, but send comments and suggestions to IDS.central.bureau@cls.fr