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The Last Time The Clock Read 23:59:60 Was On December 31, 2016. It Will Not Happen Again This June | Collector
The Last Time The Clock Read 23:59:60 Was On December 31, 2016. It Will Not Happen Again This June
IFLScience

The Last Time The Clock Read 23:59:60 Was On December 31, 2016. It Will Not Happen Again This June

The next opportunity may come on New Year's Eve this year, but it all depends on the distribution of Earth's mass, and the Moon.

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