How many days are there in Leap Year?
Leap year=366 days. (2020,2024,2028….)
February lasts neither 30 nor 31. February is normally 28 days. However, it lasts 29 days once in every 4 years. This difference is due to a year lasts 356 days and 6 hours. In case the extra six hours a year will be disregarded, the calendar would shift 25 days in every 100 years. Since these extra 6 hours are equal to 24 hours in every 4 years, they are included in February. This is why February lasts 29 days once in every 4 years.