Tunguska event / First leap second added to UTC - June 30
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On this day in 1908, an explosion occurred near the Podkamennaya Tunguska River in Russia that was likely caused by a meteorite or comet bursting. / 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://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.
