How is the birthday calculated?

Monthly trunk and annual trunk branches refer to 1 chart and monthly table.

If the annual stem is a or self, then the stem in the first month of that year is C Yin; If the annual stem is B or G, the stem in the first month of that year is Wuyin; If the annual work is C or Xin, the work in the first month of that year is Geng Yin;

If the annual stem is Ding or Ren, then the stem in the first month of that year is Ren Yin; If the year's work is the Reform Movement of 1898 or the year's work in the first month of that year is Jiayin.

Time: 23: 00 to 0: 59 am

Ugly time: 65438+ 0-2: 59 am

Yin Shi: 3 am to 4: 59 am.

Shi Mao: From 5 am to 6: 59 am.

Morning: 7: 00 a.m. to 8: 59 a.m.

Shi Si: 9: 00- 10: 59.

Noon: 1 1 p.m. 12: 59

No time: 13 pm-14: 59 pm

Application time: 15- 16: 59 pm

Unified time: 17- 18: 59 pm

Time: 19 pm-20: 59 pm

Shihai: 2 1 pm-22: 59 pm

Please refer to the daily schedule in Figure 2 for daily trunk lines and branch lines.

If the daily work is Jia or himself, then the daily work is Jia; If the trunk of the day is B or G, the trunk of the day is C; If the Japanese stem is C or Xin, the Japanese stem is Wuzi; If the daily work is Ding or Ren, the daily work is Geng Zi; If a day's work is e or decyl, then a day's work is not nut.

Extended data:

Heavenly stems and earthly branches: In ancient China, people took heaven as their work and the earth as their support.

There are ten kinds of heavenly stems, including: A, B, C, D, E, Ji, G, Xin, Man and Ghost.

There are twelve earthly branches: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai.

Heavenly stems and earthly branches used to record the sun. Ten heavenly stems and twelve earthly branches are combined into sixty units in turn. Odd aerial stems are matched with odd ground branches, and even aerial stems are matched with even ground branches. From Jiazi to Guihai, there are sixty, which are called Sixty Jiazi.

In ancient China, people used this method to record the year, month and day, and so on.

In ancient China, people divided a day and a night into twelve hours, but in modern times, one hour is equivalent to two hours, representing five o'clock and six o'clock in the morning in Shi Mao, and so on. By analogy, these four hours, noon, untimely, Shenshi, Youshi, Qishi, Zishi, Ugly and Yin Shi are a whole day and night.

Heavenly stems and earthly branches is not only a tool for ancient people in China to calculate the life span of stars, but also a calendar for calculating time, which is related to the history, culture and daily life of China.

References:

Baidu encyclopedia-birthday