Why will June 30 be longer than usual?

062715-leap second

The day will officially be a bit longer than usual on Tuesday, June 30, 2015. But you probably won’t notice it.

“Earth’s rotation is gradually slowing down a bit, so leap seconds are a way to account for that,” said Daniel MacMillan of NASA’s Goddard Space Flight Center.

Read on to find out more – Why will June 30 be longer than usual?.

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