Introduction to the Earth Exercise (Why does China set 24 solar terms? How does it calculate the big moon and the small moon? Arrange a normal year and an operation year? What is the dry branch method

Introduction to the Earth Exercise (Why does China set 24 solar terms? How does it calculate the big moon and the small moon? Arrange a normal year and an operation year? What is the dry branch method? Seek the best. Set 24 solar terms to guide agricultural production, adjust the monthly order and control operation.

According to the phase of the moon, in our traditional calendar, the date and time of the conjunction of the sun and the moon are calculated one by one, and the date of each conjunction is set as the first day; Determine the size of a month according to the number of days contained in two consecutive conjunctions. If there are 30 days, this month is a big month. If it only contains 29 days, it is an abortion.

Arrange the normal year and leap year according to the number of moons corresponding to the tropic year (1 tropic year = 12.3683 moons).

The trunk and branches have ten days of trunk: A, B, C, D, E, G, Xin and Ren; There are twelve branches in the earth: the ugly child did not apply for the afternoon. The sky is dry and the things are dry, and the branches are circularly matched. 60 is a week, and the cycle is repeated.

I hope it helps you.