2016 to be a second longer: US naval observatory

On December 31 this year, a “leap second” will be added to the world’s clocks at 23 hours, 59 minutes 59 seconds Coordinated Universal Time, the US Naval Observatory has announced. This corresponds to 4:29:59 am IST, on January 1, 2017 when the extra second will be inserted at the US Naval Observatory’s (USNO) Master Clock Facility in Washington, DC. Since 1972, 26 additional leap seconds have been added at intervals varying from six months to seven years, with the most recent being inserted on June 30, 2015.