An agency report indicated on Friday that International timekeepers are adding a second to the clock at midnight universal time Saturday, June 30, going into July 1. That’s 8 p.m. EDT Saturday.

The report said the  universal time would be 11:59:59 and then the unusual reading of 11:59:60 before it hits midnight.

A combination of factors, including Earth slowing down a bit from the tidal pull of the moon, and an atomic clock that’s a hair too fast, means that periodically timekeepers have to synchronise the official atomic clocks, said Daniel Gambis, head of the Earth Orientation Service in Paris that coordinates leap seconds.
ond a year.

Timekeepers add that leap second every now and then to keep the sun at its highest at noon, at least during standard time.

The experts said it was the first leap second since January 2009 and the 25th overall.

Gambis said the next one probably would not be needed until 2015 or 2016.

There should be no noticeable affect or inconvenience on computers or any other technology that requires precise timekeeping because they adjust for these leap seconds, Gambis said Friday.

Earlier this year, official timekeepers from across the world discussed whether to eliminate the practice of adding leap seconds.

They decided they needed more time to think about the issue and will next debate the issue in 2015.

So for now, Chester said, “you get an extra second, don’t waste it.”

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