February is packed with interesting observances, but one that stands out is Leap Day—and the Leap Year that makes it possible! If you’re wondering “When is the next leap year?” or curious about why we ...

Why does Leap Year occur once every 4 years? Our calendar is not entirely in sync with our planet’s trip around the sun. If your birthday is on Feb. 29, what date do you use for official ...

Leap years help to keep the 12-month calendar matched up with Earth’s movement around the Sun. After four years, those leftover hours add up to a whole day. In a leap year, we add this extra day ...

We've used leap years for over 2,000 years so our calendars are more in sync with the Earth’s rotation around the Sun. What is a leap year? Generally we define a year as 365 days, but a full ...