Happy Leap Day! The rare date Feb. 29 is coming up − though it only crops up every four years, it is indeed real. But what about Feb. 30 or March 32?

When the Julian calendar was changed to the Gregorian calendar in 1582, the tradition of adding a leap day to February continued. 2024 is party time for leap year babies ...

2024 is a leap year, meaning we add one day to the end of February and make the year 366 days long instead of the usual 365.

Over the course of centuries, a calendar with no leap years would eventually become totally out of sync with the seasons as we know them. Let’s see what would happen. Leap years exist because we ...

In honor of Leap Day, this read is for the history nerds. Ever wonder how America caught our calendar up with the rest of the world? In September 1752, we skipped over 11 days.

To address this issue, Julius Caesar introduced the Julian calendar, a solar calendar, which included a leap year system. The tradition of adding a leap day to February persisted when the Julian ...

Why do we have Leap Day? The Leap Year rules were originated in the Julian Calendar, established in 46 BC by Julius Caeser, but the system wasn't perfect.

Leap day is February 29. Here's why we get an extra day this year and why we have a leap year (almost) every four years.

While there’s plenty of things to note in the calendar for 2024, one of the biggest is that this year is a leap year. But what exactly does that mean, how often does it happen and why?