Leap months occur every few years.

Leap moon comes once every few years, and there is a lot of knowledge in it. Don't miss it if you want to know. Welcome to read the following!

How often is the leap month?

Every two or three years. There is a summary of "seven leaps in nineteen years" among the people. In the lunar calendar, because the average number of days in a year 12 months (called "lunar month" for the time being) is less than that in the solar calendar 1 1 day, the calendar stipulates that a leap month must be added every two or three years to make up for the difference of about one month. How often is the leap month?

And because this difference is not a regular number, it is not very regular when leap months need to be added. However, with the increase of years, people have summed up the law of "seven leap months in nineteen years", that is to say, there should be seven leap months in the China lunar calendar in nineteen years.

The Year of the Rooster has 384 days. What is a "double spring leap month"?

In the solar calendar, the earth revolves around the sun for a tropic year, with 365 days in a normal year and 366 days in a leap year. The traditional lunar calendar in China is based on the moon's profit and loss cycle, with a month of about 29.5306 days, 12 months of 354 days or 355 days, less than the solar calendar 1 1 day.

In this way, three years later, the solar calendar is 33 days longer than the lunar calendar. If there is such a big difference in the number of days between the lunar calendar and the solar calendar, there will be a strange thing of "wearing clothes in the first month and heavy snow in June". How often is the leap month?

In order to solve this contradiction, the ancients adopted the method of setting leap month. The current leap year method is "seventeen leap years in nineteen years", that is, seven leap years are added to 19 lunar year. Because there is a leap month in the leap year of the lunar calendar, there are about 383 to 385 days in a year, while the average year of the lunar calendar generally has 353 to 355 days.

Therefore, the Gregorian calendar leap year calculation rule of "leap every four years, not leap in a hundred years, leap again in four hundred years" is not feasible here ~

What's the difference between leap year and leap month?

Leap year is a term in the Gregorian calendar. According to the Gregorian calendar, there are 97 leap years every 400 years, and the years that don't meet every 100 years can be divisible by 4, which is a leap year, and February this year is 29 days; February in other years is 28 days. Except for February, there is no difference between the days of a normal year and a leap year. How often is the leap month?

Leaping moon is a term in the China lunar calendar. Because the lunar calendar is a lunar calendar, we should give consideration to both the moon and the sun. Since15th or16th is a full moon, each month is about 29.5 days. Generally 12 months has only 355 days. This year's accumulation will be out of touch with the season (because the period of revolution on Earth is 365 days). Therefore, one month should be added every three years or so, so that the long-term average length of lunar year is the same as that of Gregorian year, which is about 365.2425 days. The added month is called leap month. The leap month in the lunar calendar is probably the seventh leap month in the nineteenth year.

Gregorian calendar 1982 to 2042 and lunar leap year leap month comparison table:

1982 May 23rd, leap April, small non-year.

1984165438+1October 23rd is the leap year of October.

1987 leap June 26th Xiaoding Mao Year

1June 23, 990, leap in May, Xiao Gengwu year

1April 22, 993, leap in March, the year of Little Gui You.

1September 25, 995, leap in August, the year of Little Yihai.

1June 24, 998 leap year may small wuyin year

200 1 May 23rd leap April Xiao Xin Sinian.

March 2004, 2 1, leap February, Xiao Jia Shen nian.

July leap.

2009-06-23 May of the Clown Year

20 12 may 2 1 leap April, the year of Xiao renchen.

2014101October 24th, leap in September, Xiao Wu's good year.

2065438+July 23, 2007, leap June, the year of Dading.

May 23, 2020, leap into April, the year of little boxer.

March 22, 2023, February of leap year.

June 2025-07-25, the fourth year is a leap year.

May 2028-06-23, the year of Xiaowushen.

2031April 22, leap in March, little Xinhai year

Leap into the winter moon, small and ugly year.

2036-07-23 Leap June is the Great Ice Festival.

May leap in 2039-06-22.

March 22, 2042, leap February, a small year of Africa.

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