To align Coordinated Universal Time with Earth’s rotation, a second occasionally gets added to the year. That may change in ...

It takes 365 days, 5 hours, 48 minutes and 45 seconds for Earth to orbit the sun. Cue Leap Years. Next week sees an extra day in the 2024 calendar—a leap day. You’ll remember the last leap year. It ...

Add Yahoo as a preferred source to see more of our stories on Google. (Getty Images/iStockphoto) Every four years, an additional day is added to the month of February, which makes 29 February is a ...

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...