How many days are there in a month and how many months are there in a year?

Lunar months are divided into big month and small month, with 30 days for big month and 29 days for small month.

There are 383-385 days in the lunar year, and the average lunar year is generally 353-355 days, which makes the average number of days in a year consistent with the number of days in the tropic of cancer.

Therefore, this calendar conforms to both the moon and the periodic movement of the earth around the sun. The "leap method" sets 7 leap months every 19, and the year with leap months is 383 days or 384 days, which is called leap year.

Correspondence between lunar calendar and solar calendar;

The basis for determining the name of the month in the lunar calendar is determined by "Zhong Qi". That is, the month containing "rain" is the first month; February is a month with "vernal equinox"; March is the month of Grain Rain; April is a month with "small fullness"; The month with "summer solstice" is May.

June is the month of "great summer heat"; July is the month of "summer heat"; August is the month of autumnal equinox; September is the month of "first frost"; 10 is the month of "light snow"; 1 1 month is the month of "winter solstice"; 1February is a "cold" month.

Extended data

Calculation method of lunar calendar:

The lunar calendar is a kind of lunar calendar, with the cycle of the moon phase as the month length and the year of the return of the sun as the age. By setting leap months, the average calendar year adapts to the tropic year.

According to the first year of Xuanyuan Emperor, the ancestor of China, this year's year is 20 16, which is the year of the monkey in the first year of the lunar calendar, 47 13. Our traditional calendar is 2697 years earlier than the Gregorian calendar prevailing in the west, so we can use +2697 to get the year of our traditional calendar.

With regard to the origin of the lunar calendar, a large number of ancient books recorded that the lunar calendar began in the era of the Yellow Emperor, and its rules of combining yin and yang calendars are generally considered to have originated in the Shang Dynasty. The method of determining the lunar calendar is given by the lunar cycle. The new moon is on the first day, and the lunar month is about 29 and a half days long, so the lunar month has 30 days and the abortion has 29 days.

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