All CGSIC:
On Behalf Of IERS, EOP Product Center Sent: Bulletin C Number 68
INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE ET DES SYSTEMES DE REFERENCE
SERVICE DE LA ROTATION TERRESTRE DE L’IERS OBSERVATOIRE DE PARIS 61, Av. de l’Observatoire 75014 PARIS (France)
Tel: +33 1 40 51 23 35
e-mail: services.iers@obspm.fr
Paris, 04 July 2024
Bulletin C 68
To authorities responsible for the measurement and distribution of time
INFORMATION ON UTC – TAI
NO leap second will be introduced at the end of December 2024.
The difference between Coordinated Universal Time UTC and the International Atomic Time TAI is:
from 2017 January 1, 0h UTC, until further notice: UTC-TAI = -37 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.
Christian BIZOUARD
Director,
Earth Orientation Center of IERS
Observatoire de Paris, France
