No Leap Second December 2018

On July 5th, 2018, Christian Bizourd, Director, Earth Orientation Center of IERS, Observatoire de Paris, France, announced that NO leap second will be introduced at the end of December 2018.

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.

To read the full announcement, please navigate to