Once every four years, people born on February 29 actually get to celebrate their birthday. The leap day is the extra day added every fourth year to help fix the problem that while our calendar year is 365 days, the solar year – the amount of time it takes the Earth to circle the sun – is actually 365.24219 days. So if your birthday is today, we hope you have a wonderful day since you get to celebrate your birthday on your actual birthday in 2020!