Bulletin C number 19
iers at hpopa.obspm.fr
iers at hpopa.obspm.fr
Thu Jan 13 12:55:27 UTC 2000
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 at obspm.fr
Paris, 13 January 2000
Bulletin C 19
To authorities responsible
for the measurement and
distribution of time
INFORMATION ON UTC - TAI
NO positive leap second will be introduced at the end of June 2000.
The difference between UTC and the International Atomic Time TAI is :
from 1999 January 1, 0h UTC, until further notice : UTC-TAI = - 32 s
Leap seconds can be introduced in UTC at the end of the months of December
or June, depending on the evolution of UT1-TAI. Bulletin C is mailed every
six months, either to announce a time step in UTC, or to confirm that there
will be no time step at the next possible date.
Daniel GAMBIS
Director
Central Bureau of IERS
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