INTERNATIONAL EARTH ROTATION SERVICE (IERS) SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE SERVICE DE LA ROTATION TERRESTRE 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 Internet: iers@obspm.fr Paris, 11 January 2002 Bulletin D 87 ANNOUNCEMENT OF DUT1 From the 14 February 2002, 0h UTC until further notice, the value of DUT1 to be disseminated with the time signals will be DUT1 = -0.2 s Bulletin D 88 should be issued in July 2002.