According to two Greek scientists the start of 2017 will have to wait one second extra.
In order to compensate for the slow rotation of the Earth around its axis, the two scientists have announced that at the end of December 31, 2016, a leap second will be added.
The deviation of an entire second is generated on the astronomical clock every 500 to 750 days.
Since 1972 the International Service Rotation and Reference Systems of the Earth (IERS) has added a total of 26 seconds. The last time was on June 30, 2015.