Everyone know there are 365 days in a year, right? Wrong! To be exact, there are 365.24219 days per year. But we can't have a day that's just over 5 hours 48 minutes, so long time ago "they" decided to slip in an "intercalary" day every four years (sort of). So that gave us a leap year every four years. And today is a leap day.
If it's your birthday today, let me wish you four extra special Happy Birthdays :)
How are you spending your leap day?