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Leap Year Day
February 29, 2020
In a leap year, the extra day is added at the end of February, giving it 29 days instead of 28. The extra day is called a leap day, or an intercalary day. It takes the earth a little bit less than 365 ¼ days (365.242 days) to orbit the Sun (solar year). For this reason, the full day is only added every 4 years.