INTERNATIONAL EARTH ROTATION SERVICE (IERS) SERVICE INTERNATIONAL LA ROTATIO TERRESTRE BUREAU CENTRAL DE L'IERS OBSERVATOIRE DE PARIS 61, Av. de l'Observatoire 75014 PARIS (France) Tel. (33) 1-40 51 22 26 Telex : 270776 OBS Internet : services@obspm.fr Bulletin D 58 Span : MESIOA::SERVICES FAX : (33) 1 - 40 51 22 91 ANNOUNCEMENT OF DUT1 From the 1 January 1996, 0h UTC until further notice, the value of DUT1 to be disseminated with the time signals will be DUT1 = + 0.5 s Note the change of sign due to the introduction of a leap second on 1 January 1996. Bulletin D 59 will be issued in December 1995.