There are typically 365 days in a year, but in 2024 we get 366. Here's the history behind February's bonus day.

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 ...

The original Roman calendar divided the year from March to December into 10 months of either 29 or 31 days, based on lunar ...

An unusual quirk in the traditional Chinese calendar means the occasion Lunar New Year's Eve, also known as danian sanashi, ...

Every fourth year, those extra quarter-days get added to the calendar to make one full day – February 29. 2 This means every leap year has 366 days! 3 A leap year happens when the year can be ...

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 ...

So, a leap day was added to the calendar every four years to account for the quarter day. Whenever a leap year comes around, there are always a few errors that pop up around the world. Last year ...

What to know about February and leap year. Why do we have a leap years? Leap years account for the inaccurate measure of time on the 365-day calendar. Technically it takes 365.242190 days for the ...