HowStuffWorks via myPod

First leap second added to UTC - June 30, 1972


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At 11:59 p.m. and 60 seconds, a leap second was added to Coordinated Universal Time to synchronize clocks with Earth’s decelerating rotation.  Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers


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HowStuffWorks via myPodBy Joshua Hoover

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