Current leap year for all inhabitants of the planet will be longer for one day only, but still… one second. Already officially announced that December 31, 2016 after 23:59:59 will not come 00:00:00, as usual, and another second 23:59:60. Then to open the champagne…
So I decided to astronomers, our beloved Newtons. They, in particular, with high precision was determined that our planet is slightly slows down its rotation around the axis.
And oceanographers explained it to tides in the oceans and the fact that warmer ocean waters are the reason that the Earth is slowly going through its daily circulation.
In General, the international keepers of time added to the current year extra second to the speed of rotation of the planet corresponded to a precise atomic clock.
Surely, you do not think of seconds haughtily.