No Leap Second
INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)
Paris, 09 January 2023
Bulletin C 65
To authorities responsible for the measurement and distribution of time:
INFORMATION ON UTC – TAI
NO leap second will be introduced at the end of June 2023.
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.