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                                   
            

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            email: services.iers@obspm.fr                      Paris,  12 October 2026
            

            

                                                               Bulletin D 147
            

            

            

             
            

            

                                           ANNOUNCEMENT OF DUT1
            

            

            

                    From the
            

            

                                       29 October 2026, 0h UTC
            

            

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

                time signals will be
            

            

            

                                              DUT1 =  -0.1 s
            

                                              
            

            

                    Bulletin D 148 may be issued in february 2027
            

                     
            

                     
            

                  
            

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