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 23 35
http://iers.obspm.fr
email: services.iers@obspm.fr Paris, 20 December 2018

Bulletin D 139




ANNOUNCEMENT OF DUT1


From the

17 January 2019, 0h UTC

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


DUT1 = -0.1 s


Bulletin D 140 should be issued in April 2019



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