Leap years account for the Earth’s 365.2420-day orbit, with complex rules deciding when an extra day is added to February. Congress could be headed for a tipping point, irreversible decline Tennessee ...

It's not every year that you see February 29 on the calendar -- and it's not technically every four years either. Thursday is officially leap day. For some, its birthdate, or a day for special deals ...

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) every four year phenom ...

Add Yahoo as a preferred source to see more of our stories on Google. Happy early birthday, leaplings! Though 2026 is not a Leap Year, you still get a birthday month February (or March, for some ...