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 29 FAX 33 (0) 1 40 51 22 91 Internet: services.iers@obspm.fr Paris, 17 April 2015 Bulletin D 123 ANNOUNCEMENT OF DUT1 From the 28 Mai 2015, 0h UTC until further notice, the value of DUT1 to be disseminated with the time signals will be DUT1 = -0.7 s Bulletin D 124 should be issued in September 2015