How does heavenly stems and earthly branches calculate time?

60 hours is a five-day cycle; Reuse after a cycle, cycle after cycle, cycle. It must be noted that time periods are divided into early time periods (early time periods) from 0: 00 to 1 and late time periods (late time periods) from 23: 00 to 24: 00, so when you meet A or yourself, 0: 00 to 1 is a time period, and 23: 00 to 24: 00 is a time period. Late night is also called midnight or night.

There is also a song that starts from a day: A also adds A, and B is the beginning; Bing Xin started from Wu, and Dingren Gengzi was born; You can't do it, but you can't.

Jia Zi, Yi Ugly, Bing Yin, Ding Mao, Chen Wu, Keith, Geng Wu, Xin Wei, Ren Shen, Gui You,

Jia Xu, Yi Hai, Bing Zi, Ding Chou, Wu Yin, Chicken Feather, Chen Geng, Xin Si, Ren Wu, Gui Wei,

Shen Jia, Yi You, Bing Xu, Ding Hai, Woods, Ji Chou, Geng Yin, Xin Mao, Ren Chen, Gui Si,

Wu Jia, Yiwei, Shen Bing, Ding You, Wuxu, Jihai, Gengzi, Xin Chou, Ren Yin, Gui Mao,

Chen Jia, Yi Si, Wu Bing, Ding Wei, Wu Shen, Ji You, Geng Xu, Xinhai, Renzi, Gui Chou,

Jia Yin, Yi Mao, Chen Bing, Ding Si, Wu Wu, Wiki, Geng Shen, Xin You, Ren Xu, Gui Hai.

Extended data

The cycle of heavenly stems 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 cycle of the underground branch is twelve, with twelve hours, twelve days, twelve months and twelve years as different cycles, which are repeated in an orderly manner and form a stable periodic law.

With the cooperation of heavenly stems and earthly branches, we created a cycle of 60 hours, 60 days, 60 months and 60 years, which was repeated in an orderly manner and formed a stable periodic law. Because the cycle of cooperation between stem and branch begins with heavenly stem "A" and earthly branch "Zi", people call this cycle with 60 as a process "Jia Zi".

Baidu Encyclopedia-heavenly stems and earthly branches

China Net-Interpretation of heavenly stems and earthly branches's Five Elements