What is a leap year?

About leap year, I think only the older generation in the family will know something about it. However, some young people want to know, what is leap year?

1, leap year is set up 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, and the year to make up for the time difference is leap year.

2. The year to make up the time difference is leap year. Leap year * * has 366 days (respectively 1 day, 29 days, 3 1 day, 30 days, 3 1 day, 30 days, 3 1 day, 3 1 day.

3. Where there is a leap day (February 29th) in the solar calendar, a leap (year old) is a leap. Time difference between lunar calendar and tropic year.

Please note that leap year (a term in Gregorian calendar) is not directly related to leap month (a term in lunar calendar). The Gregorian calendar is only divided into leap years and peace years, with 365 days in a normal year and 366 days in a leap year (one more day in February); There may also be leap months in a normal year (for example, 20 17 is a normal year, and there are leap months and leap months in the lunar calendar).

This is all about leap years.