A year is normally made up of 365 days, however every four years, it becomes 366 days in a year and that extra day is vital for our calendars to stay aligned with the Earth and sun. It takes exactly 365 days, 5 hours, 48 minutes and 45 seconds for the Earth to circle around the sun. If there was no extra day then every four years, we would lose about 6 hours per year. After 100 years, our calendar would be out of line by 24 days and it would be summer when winter is supposed to be. Happy Birthday to all of the leap-year babies out there!
