iHeartRadio & HowStuffWorks
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
https://www.listennotes.com/e/3085afaea912472a9a4b434aa018ff91/