NEW YORK (AP) — Leap year. It's a delight for the calendar and math nerds among us. So how did it all begin and why? Have a look at some of the numbers, history and lore behind the (not quite) ...

When are leap years and why don't they happen every four years exactly? Leap years happen almost every four years. That means 2024 and 2028 will both be leap years. But still, there are some ...

Note: The video in the player above is from a previous report. This year, there's an extra day in the calendar: February 29, 2024. Stream NBC 5 for free, 24/7, wherever you are. That's because 2024 is ...

Feb. 29 is a bonus day in 2024 – which happens only every four years. The last leap year was 2020. Typically, February has only 28 days. Our shortest month gets a day longer in 2024, as it does every ...