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 there are 354 days in a year, that is, 12 months. The month of the lunar calendar has no seasonal significance, so a year differs from the year of the solar calendar by 1 1 day. Just after 17 years, the date of the lunar calendar will be reversed with the seasons. For example, the new year of the year is in.

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 Qin and Han Dynasties, and the 24 solar terms are used to guide agricultural production. ?

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Introduction to leap month:

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

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

This 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 includes leap day in leap year of Gregorian calendar (that is, February of leap year of Gregorian calendar).

References:

Baidu encyclopedia leap moon