Social sc geography Chapter 3 Motions of the Earth Leap year Our Earth takes 365 days and 6 hours to complete one revolution. We usually count 365 days in a year and 6 hours is left . But this 6 hours in every year becomes 24 hours . 24 hours means One day. So every four year is a leap year. A leap has 366 days instead of 365 days. One day is added to Feb ruary. So February has 29 days instead of 28days in aleap year. In leap year there are 366 Days and February has 29 days. A leap year is always divisible by 4. 2020 is a leap year because it is divisible by 4.