February is packed with interesting observances, but one that stands out is Leap Day—and the Leap Year that makes it possible ...

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 ...

Since Leap Year occurs once every four years — 2020, 2024 and 2028 is the next one, for example — this "Leap Day math" applies to people born Feb. 29. (Scroll down for a list of celebrities ...