How to calculate the heavenly stems and earthly branches of the hour

There are 60 combinations in heavenly stems and earthly branches, corresponding to 60 hours, which means 5 days. Using heavenly stems and earthly branches time, 60 hours is a cycle of 5 days. Reuse after recycling, recycle, recycle.

23: 00 to 1: the first day of Jiazi; The third day and the second day; Three days of Wuzi; Gengzi's fourth day; The fifth day, when I was a child.

Clown 1-3: the first day of clown; Ding Chou the next day; On the third day, when you are ugly; On the fourth day, when you are ugly; The fifth day, when I was ugly.

3:00-5:00 pm: the first day, Bing Yin; Wuyin second day; On the third day, Geng Yin; The fourth day; Jiayin's fifth day.

5: 00-7: 00 in Shi Mao: the first day of Ding; When the next day is over; On the third day, Xin Mao; The fourth day; At the end of the fifth day.

7: 00 am-9: 00 am: the first day in Chen Wu; The second day in Chen Geng; On the third day, in Chen Chen; On the fourth day of Chen Jia; On the fifth day, I arrived in Chen Bing.

9: 00- 1 1: The first day has passed; At dawn the next day; On the third day; On the fourth day, in the second hour; On the fifth day, Ding arrived.

Noon 1 1- 13: the first day of Geng Wu; At noon the next day; At noon on the third day; At noon on the fourth day; At noon on the fifth day.

13- 15 End of the year: the first day in Xin Wei; At the end of the next day; At the end of the third day; At the end of the fourth day; The fifth day is over.

15: 00 to 17: the first day of application; The second day in Shen Jia; The third day in Shen Bing; The fourth day of Wushen; On the fifth day of Gengshen.

Unitary time 17- 19: grade one; The next day; On the third day, Ding Youshi; When the fourth day is over; On the fifth day, Xin Youshi.

From 19: 00 to 2 1: the first day; The second day in Xu Bing; The third day of the Reform Movement of 1898; The fourth day in Geng Xu; At the end of the fifth day.

Shihai 2 1-23:00:B The first day of Shihai; Ding went to heaven the next day; On the third day, I went to sea; The fourth day of Xinhai; The fifth day, Guihai.

Extended data

Tiangan has ten characters, the order is A, B, C, D, E, Ji, G, Xin, Ren and Gui; There are twelve characters in the earthly branch, and the order is Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai.

The operation cycle of Tiangan is ten, with ten hours, ten days, ten months and ten years as different cycles, which are repeated in an orderly manner and form a stable periodic law. The running cycle of the earthly branch is twelve, with twelve hours, twelve days, twelve months and twelve years as different cycles, which are repeated in an orderly manner, forming a stable periodic law.

With heavenly stems and earthly branches's cooperation, we created cycles of 60 hours, 60 days, 60 months and 60 years, and repeated them in an orderly manner, forming a stable periodic law. Because the cycle of heavenly stems and earthly branches's cooperation starts from the heavenly stem "A" and the earthly branch "Zi", people call this cycle with 60 as a process "Jia Zi".