If you look at your calendar this week, you will see an unusual date: Feb. 29. That’s because 2024 is what’s known as a leap year — and while those in the Northern Hemisphere might not be th ...

This replaced the Roman calendar, which followed the movements of the Sun and Moon and required more regular leap days, weeks and even months to keep everything in line. These leap months ...

The emperor Caesar adopted a 365-day calendar and added 10 days to it, including a leap day in February every four years, writes Calendar.com. Eventually, the calendar we all know was adopted by ...