INTERNATIONAL   EARTH   ROTATION   SERVICE   (IERS) 
                    SERVICE INTERNATIONAL DE LA ROTATION  TERRESTRE




BUREAU CENTRAL 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
Internet: iers@obspm.fr                            Paris, 16 April 1999


                                                   Bulletin D 80










                               ANNOUNCEMENT OF DUT1




        From the


                               27 May 1999, 0h UTC


    until further notice, the value of DUT1 to be disseminated with the 
    time signals will be




                                  DUT1 = + 0.5 s
                                  



        Bulletin D 81 should be issued in June 1999.