How to calculate the lunar leap month?

An additional month in each leap year. In the lunar calendar, the length of the first lunar month (29.5306 days) is the average of one month, which is 65438+February in the whole year, which is about 10 and 2 1 hour different from the tropic year (365.2422 days), so it is leap in turn, one month in three years, two months in five years and seven months in nineteen years.

What is the contradiction between the tropic year and the lunar year? Remember first: the total length of the tropic year is 365.2422 days, and the length of the first lunar month is 29.5306 days.

12 lunar months constitute a lunar year, with a length of 29.5306× 12=354.3546 days, which is 10.88 days less than the regression and about 1/kloc-0 less than the monthly 0.9 1 day.

Lunar leap month runs once every three years, twice every five years, and 19 runs seven times!

1949 leap July 1952 leap may 1955 leap March 1957 leap August 1960 leap June 1963 leap April1963 leap April.

1982 leap April 1984 leap October 1987 leap June 1990 leap may 1993 leap March 1995 leap August1995 leap August.