What is a normal year and a leap year?

1, average year: refers to the year when there is no leap day in the solar calendar or no leap month in the lunar calendar; Refers to a year in which crop harvest is very common.

2. Leap year: It is established to make up for the time difference between the number of days in a year and the actual period of revolution of the earth caused by man-made calendar regulations.

Second, the days are different.

1, average year: If there are 365 days in a year, it is an average year.

2. Leap year: 1 year has 366 days as leap year.

Third, the algorithm is different.

1. Average year: divide the number of days in the current year by 4. If there is a remainder, it is the average year.

2. leap year: divide the number of days in that year by four. If it is a leap year, there is no remainder.

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