In my time celebrating National Days, this is one I missed. So obviously….

Here are some fun facts from NationalDayCalendar.com.

Since the beginning of time, man has been improving the way we keep it. That applies to calendars as well. Early Egyptians had a leap year in their calendar. The early Roman calendar had entire leap month from time to time to keep the days in line with the astronomical year.

It was Julius Casaer and astronomer Sosigenes who revamped the Roman calendar giving it 12 months with equally (almost) distributed days and adding a leap day every 4 years.

In 1582, Pope Gregory XIII adjusted the calendar once again. Because the Earth revolves around the sun once every 365.2421 days, one leap day every 4 years is just slightly too much. Instead of shortening the leap day, the Gregorian calendar is designed such that leap days only happen every 4 years except years evenly divisible by 100 but not 400.

I didn’t know that thing about years divisible by 100 but not 400. That’s pretty cool!

I hope you all had a wonderful leap day. It’s a bonus day!