What is heavenly stems and earthly branches?

Heavenly stems and earthly branches, referred to as Ganzhi for short, is used to arrange year numbers and dates in the summer calendar.

Tiangan is: A, B, C, D, E, G, Xin, Ren and Gui, also called Tiangan; The earthly branches are: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai, also known as the Twelve Earthly Branches. Branches are still divided into yin and yang: A, C, E, G, Ren for yang dryness, B, D, Ji, Xin, classified as yin dryness; Zi, Yin, Chen, Wu, Shen and Xu are the Yang branches, while Ugliness, Mao, Si, Wei, You and Hai are the Yin branches. A heavenly stem and a terrestrial branch are arranged in pairs, with the heavenly stem in front and the terrestrial branch behind, the heavenly stem from the nail, the terrestrial branch from the child, the yang stem with the yang branch, and the yin stem with the yin branch (the yang stem without the yin branch and the yin stem without the yang branch). Sixty combinations are called "Sixty Jia Zi". In the past, people in China used to recycle calendar year, calendar month, calendar day and calendar time.

1 .jiazi 2. Ugly B 3 Bing Yin 4. Ding Mao 5. Chen Wu 6. Keith 7. Wu Geng 8. Xin Wei

9. Ren Shen 10. Gui You 1 1. JOE 12. Yihai 13. Bing Zi 14. Ding Chou 15. Wuyin 16. Ji.

17. Chen Geng 18. Xinsi 19. Renwu 20. Guiwei 2 1. Shen Jia 22. Yiyou 23. Xu Bing 24. Ding hai.

25. Wu Zi 26. Ugly 27. Geng Yin 28. Xinmao 29. Yan Chen 30. Your company 3 1. Wu Jia 32. the Kingdom of Wei（220-265 A.D）

33. bing Shen 34. Dingyou 35. The reform movement of 1898. Jihai 37. Gengzi 38. Xin Chou 39. Ren Yin 40. Guimao

4 1 .Chen Jia 42. Yisi 43. Bingwu 44. Ding Wei 45. Wu Shen 46. Ji You 47. Geng Xu 48. Xinhai

49. Renzi. Guichou 5 1. Good news 52. Mao yi 53. Chen Bing 54. Butyl 55. Five, five, six Not yet.

57. Geng Shen 58. Heart has 59. Ren Xu 60. Guihai

Tree trunk and branch chronology

For example, Jia Zi is the first year, Ugly B is the second year, and Bing Yin is the third year ... Sixty years is a week. Week after week, starting from the year of Jiazi, starting from the week, and starting again and again. For example, 1929 is the lunar year, 1930 is the year of Gengwu ... and 1989 is the lunar year. The four years and Gengwu years we see on the calendar are arranged according to the chronology of trunks and branches. Divide the Gregorian calendar year by the remainder of 60, and then subtract 3 to get the monthly branch number of that year, and then check the above branches to get the age of the branches. If the serial number is less than or equal to zero, add 60 to the branch serial number. For example, find 199 1 year; 199 1÷60=33 Remaining 1 1, annual serial number of stem and branch = 1 1-3=8. Check the list of cadres and branches, and you will know that this year is the year of Wei Xin. Another example is to find the main branch of 1983: 1983÷60=33+3, and the main branch serial number =3-3=0, plus 60. Check the main branch table and know that the year is Guihai.

Dry-branch moon method

The method of keeping the moon in the main branch is not widely implemented, mainly to let astrologers calculate the eight characters. The method is as follows: in the first year of the year, the first month is the third lunar month; B or Geng Year, the first month is Wuyin; The first month of Year C or Year Xin is Geng Yin, the first month of Year Ding Nian or Year Ren is Ren Yin, and the first month of Year E or Year decyl is Jia Yin. The main branch of the first month is known, and the rest months can be inferred in the order of sixty sons.

Dry branch method

The first day of onychomycosis, the second day of ugliness, the third day of bingyin ... 60 days a week. At the weekend, it starts from Jiazi Day and goes on and on. For example, in the fourth year of the lunar calendar (1989), the first day of the first month is Ding You Day, and the second day is the Reform Day ... The seventh day of March is exactly 60 days, so the second day of March is Ding You Day again.

Chronology of cadres and branches

The earthly branches in daytime are also certain, so 12 earthly branches are allocated in 24 hours, and at night 1 1 point to 1 point, 1 point to 3 o'clock, and the rest are pushed. The day is inferred from the day, and its song is as follows:

A has given birth to a, and B, G and C come first.

Bing Xin started in Wu, and was destined to be a boxer.

You can't do it, but you can't.

That is, if the day is A or his own, the child should be accompanied by A when he was a child; If the day is b or g, it should be accompanied by c as c; On the day of Bingxin, Wu was the son of Wu; Ding Renri is a boxer; Pentecost is a seedless day. When you know your child's main branch, you can infer the rest.