How to calculate the year with heavenly stems and earthly branches?

The sky is dry according to the figures at the end of the year.

BC: 0 is Xin, 1 Geng, 2 is Ji, 3 is E, 4 is D, 5 is C, 6 is B, 7 is A, 8 is decyl and 9 is nonyl. After AD: 0 is Geng, 1 Xin, 2 is Ren, 3 is Gui, 4 is A, 5 is B, 6 is C, 7 is D, 8 is E and 9 is self.

The calculated earthly branches can be divided into odd arrangement and even arrangement. (After A.D., odd-numbered spouse array, even-numbered spouse array. The situation in BC is just the opposite. )

Odd array: even array: 123456 123456. When calculating the ground branch at noon, divide the year by 6 and the last number (for example, divide 2009 by 6). Divide by 6 to get the remainder, and you can get the ground branch. However, due to the different final figures, the branches obtained are also different.

Extended data:

Since ancient times, there has been a saying in China that there are twelve branches in ten days, referred to as "branches" for short.

"Stems and branches" take their meaning from the branches of trees, probably because the ancients thought that trees adapt to the changes of the four seasons. Spring, long summer, autumn harvest and winter storage have always stood between heaven and earth with the changes of heaven and earth, and they seem to echo with heaven and earth, never delaying a minute, reminding everything in the world of the passage of these years in the changes of solar terms.

Baidu Encyclopedia-heavenly stems and earthly branches