Appreciation of China Traditional Culture "Lunar Calendar"

Witty words; Punchline

Lunar calendar is a traditional calendar in China, based on the first month of the lunar calendar, so it is also called "lunar calendar". The average calendar month of the lunar calendar is equivalent to a new moon, but the leap month is set to make the average calendar year a tropic year, and 24 solar terms are set to reflect the changing characteristics of the four seasons, so it contains the same characteristics of the lunar calendar and the solar calendar.

Classical explanation

On average, there are 12 months in the lunar calendar every year, 30 days in the big month, 29 days in the small month, 6 days in the big and small months, and 354 or 355 days in the whole year. Therefore, the number of days per year is less than that of regression 10 to 1 1 day, so it is necessary to reduce this difference by adding leap months. There are 383 or 384 leap months in a year. The length of each year in the lunar calendar is based on the tropic year, but a tropic year is longer than 12 moons and shorter than 13 moons. Therefore, astronomers in the Spring and Autumn Period adopted the method of 19 years and 7 leap years, that is, 12 flat years and 12 months, and 13 months in 7 leap years are 19 lunar years.

Zu Chongzhi, a great scientist in the Southern and Northern Dynasties, worked out the Ming calendar, and adopted the leap method of 20 groups 19 years and 1 group 1 1 year, which made the average age of the lunar calendar closer to the tropic year. After the Qing Dynasty, our country made the calendar completely according to the astronomical phenomena, which made the average calendar length of the lunar calendar basically the same as that of the tropic year.

Because the lunar calendar considers the tropic year and the first month of the lunar calendar, it is of great significance in guiding agricultural production, which is why China people have never abandoned it.