Which years have leap month years?

Leap moon refers to a phenomenon in the lunar calendar. The lunar calendar arranges the big moon and the small moon according to the full moon, that is, the moon. The length of a moon is 29.5306 days, which is the cycle of the moon's profit and loss.

According to the lunar calendar, the big moon has 30 days and the small moon has 29 days, so a year is 12 months * * 354 days. Lunar months have no seasonal significance, so the difference between a year and the solar calendar is 65,438+065,438+0 days. Just after 65,438+07, the dates of the lunar calendar will be reversed in the same season. For example,

The use of such a calendar naturally cannot meet the needs of agricultural production, so the lunar calendar in China has been in parallel with the 24 solar terms since the Qin and Han Dynasties, and the 24 solar terms are used to guide agricultural production. ?

Extended data:

Introduction of leap month:

A leap month is a way to set a leap month in a calendar. In Asia (especially China), leap month refers to the lunar calendar (also known as the lunar calendar);

Every leap year is increased by one month (in order to coordinate the contradiction between the tropic year and the Han calendar year and prevent the month of the Han calendar year from being out of touch with the tropic year and the four seasons, 1 leap is set every two to three years. In ancient times, 19 leap week was used, and in Tang Dynasty, Lindeli abolished fixed leap week;

It is a leap in a month without seasons, so it is a leap in a leap. Sometimes leap month also refers to the month that contains leap day in leap year of Gregorian calendar (that is, February of leap year of Gregorian calendar).

References:

Baidu encyclopedia leap moon