You probably know that today is Leap Day — but do you know when the first Leap Year was? Check out these 10 amazing, unbelievable facts about Lead Day!

• "Leap Years" are years in which an additional day is included in the calendar so that everyone can "catch up" on work.
• Roman emperor Julius Caesar created the first Leap Day in 45 B.C. — almost 2,000 years ago!
• In the British Isles, the law holds that women are allowed to propose marriage to men on Leap Day!
• Rapper Ja Rule was born on February 29 — almost 2,000 years ago!
• In Greece, it's considered bad luck to get married in a Leap Year, unless you don't give a shit.
• On Leap Day, you're allowed to murder one person of your choice, as a freebie.
• The classic Amy Adams film Leap Year was released in 2010 — and the classic film 2010 was released in 1984... which was a Leap Year!

[all facts via the Internet, image from Shutterstock]