How to calculate the ancient years and months?

The answer is a bunch of idiots, and words have long since disappeared.

In our country, years, months and days are marked by dry branches.

In other words, every day, every month, every month, a branch is assigned.

See the calculation method below.

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Chronological method of stem and branch

1. Decadal Chronology is a traditional chronological method in China.

1. The meaning of trunk and branch: trunk and branch are the general names of heavenly stems and earthly branches.

Dry refers to heaven, * * * has 10 symbol:

1 2 3 4 5 6 7 8 9 10

Methyl ethyl propyl butyl hexyl heptyl octyl non decyl

Refers to the earth, * * * with 12 symbol:

1 2 3 4 5 6 7 8 9 10 1 1 12

The child is ugly, and the mother hasn't applied this afternoon.

2. The combination of stem and branch is used for dating. That is to say, the ten-day stem and the twelve-day branch are combined to form the stem and branch for dating. According to this arrangement method, 60 branches can be formed after six rounds of arrangement 10 symbols and five rounds of arrangement 12 symbols for ground branches on the same day. If it continues to be discharged, it will return to its original state again and again, which is what the folks call "sixty years of turning to Jiazi".

2. View the perpetual calendars of different time periods. For example: 15 16-2060 calendar, remember the branches of 500 years, and you will know at a glance.

Sixty years jiazi (branch table)

1 2 3 4 5 6 7 8 9 10

Jia Chubing Yin Dingmao Wu Renshen Gui You

1 1 12 13 14 15 16 17 18 19 20

Jia Haibing, Ding Chou, Mao Xin, Wu Guiwei

2 1 22 23 24 25 26 27 28 29 30

Shen Jia Yi Youbing Xu Ding Wu Haizi ugly Geng Yin Xin Mao Renchen ghost silk

3 1 32 33 34 35 36 37 38 39 40

Shen Dingyou, Wu Jia's art of war, the Reform Movement of 1898, has praised Angel's ugly people.

4 1 42 43 44 45 46 47 48 49 50

Chen Jia, Bess, Bing Wuding, Wu Shen, Ji You, Geng Xu, Xin Hai, Ren Zi, Gui Chou.

5 1 52 53 54 55 56 57 58 59 60

Jiayin, Yi Mao, Chen Bing, Ding Si, Wu Wu and Xin You have not signed up yet, so they are temporarily not responsible.

According to the corresponding year of Sixty Years Jiazi (Branch Table), it will be deducted upward or downward. For example, the year of the Revolution of 1911 was191(branch 48), and the year of the Reform Movement of 1898 was branch 35, which was earlier than the year of 1911 196543.

The calculation should be made in AD. In a certain year, we can talk about 60 years (referring to 60 years), the remainder is less than 60, and then subtract 3 from the remainder (the calendar year when trunks and branches began to be used is 4 years).

For example, 2002: 2002÷60, the remainder is 22, then 22-3, and the number is 19. Looking up the 60-year Jiazi (table of branches and branches)No. 19, we can see that it is noon.

3. Understanding the "Twelve Earthly Branches" in combination with reality

1. Match twelve animals with twelve earthly branches to form the Year of the Zodiac. (See the picture below) If the year of the main branch contains the word "zi", it is the year of the rat, and all the people born in this year are "rats"; The Year of the Ox is a year of ugliness, and all the people born in this year belong to the ox. And so on. (as shown in the following table)

Zodiac year

1 2 3 4 5 6 7 8 9 10 1 1 12

Rat, ugly cow, black snake, black horsetail, Yang Shen Houyou chicken, Gou Haizhu

2. Twelve branches represent twelve o'clock.

There are twenty-four hours in a day, but in our tradition, it is represented by twelve hours, that is, one hour is two hours. (as shown in the following table)

24-hour and 12-hour comparison table

Ugly son, ugly son, ugly son, ugly son.

23-0 1:0 1-03:03-05 :05-07:07-09:09- 1 1

Apply for Wu Hai at noon.

1 1- 13: 13- 15: 15- 17: 17- 19: 19-2 1:2 1-23

Fourth, push the stem and branch to record the year from AD.

In order to facilitate the operation and make the retrieval more intuitive, we borrowed 60 branch tables and numbered them as table 1, as shown below:

Sixty watches

Jiazi 0 E Ugly 1 C Yin 2Ding Mao 3 E Chen 4 5 6 7 8 9

JOE 10 Yihai 1 1 Bingzi 12 Ding Chou 13 Wuyin 14 Bazaar 15 Chen Geng 16 New Temple16.

Shen Jia 20 Yiyou 2 1 Bingyou 22 Dinghai 23 Wuzi 24 Ugly 25 Gengyin 26 Xinmao 27 Renchen 28 Guisi 29

Wu Jia 30 B 3 1 Shen Bing 32 Ding You 33 Wu Xu 34 Jihai 35 Geng Zi 36 Xin Chou 37 Ren Yin 38 Gui Mao 39

Chen Jia 40 1441Bingwu 42 Ding Wei 43 Wushen 44 Ji You 45 Geng Xu 46 Xinhai 47 Renzi 48 Ghost Financing 49

Jiayin 50 Mao Yi 5 1 Chen Bing 52 Ding Si 53 Wu Wu 54 Wiki 55 Geng Shen 56 Xin You 57 Ren Xu 58 Gui Hai 59

This table is applicable to the calculation before and after A.D., and the specific methods are as follows:

1, find the branch one year after AD (set to y). The method is: divide y by 60 to get the remainder, then subtract 4, and finally look up the stem corresponding to the corresponding ordinal number in the table 1 according to the obtained result, which is the stem of the year.

For example, find the trunk and branch of 19 1 1: 19 1 ÷ 60, and the remainder is 5 1. Subtract 4 to get 47. 47 in table 1 corresponds to Xinhai, namely 19655. Because the period of the main branch year is 60 years, when the remainder of Y÷60 is less than 4, it is necessary to borrow the number of 60 in a period of the main branch year, such as 198 1 divided by 60, and the remainder is 1, which is not enough for direct reduction. After adding 60, it is equal to 57. Look up the table and you will know 19866. I can make an analogy.

2. Find the branch of one year BC (set as x). The method is: divide X by 60 to find the remainder, then subtract the remainder from 57, and then look up the corresponding branch in the table 1 according to the obtained result, which is the branch of the current year.

For example, find the trunk and branch of 22 1 BC: 22 1÷60, and the remainder is 4 1, 57-4 1 = 16. Look-up table 1 16 corresponds to Chen Geng, that is, 22 BC1. Similarly, because the chronology of trunks and branches has a period of 60 years, when the remainder is greater than 57, it needs to be borrowed for another 60 years. For example, find the main branch in 479 BC (the year when Confucius died): 479 divided by more than 60 59, 57 minus 59 is not enough, and 59 minus 60 equals 58. Look-up table shows that the corresponding main branch in that year is Ren Xu. The rest can be analogized.

The above method is simple and easy. As long as you remember the table 1, you can deduce the result directly by mental arithmetic without pen and paper.

Fifth, quickly check the lunar calendar method of cadres and party branches

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; In the year of C or Xin, the first month is Geng Yin; Ding Nian or Ren Nian, the first month is Renyin; In the year of 1898 or Guisi, the first month was Jiayin. The first month is calculated according to the main branch, and other months can be calculated according to the main branch. See the table below for details:

January, February, March, April, May, June, August, September, October, November and December.

I. Si Bingyin Ding Maoji Shen Jia Yi Hai Bing Zi Ding Chou

B, Geng Wuyin, Ji Mao, Chen Geng, Xin Si, Task Gui, Not Shen Jia, Yi You, Bing Xu, Ding Hai, Woods, Ugly.

C, Xin Gengyin, Xin Maogui, B, Bing Shen, Ding You, Ji Haigeng, Qiu

Ding, Ren Renyin, Gui Mao, Yi Si,,, Wu Shen,, Xin Hai, Ren Zi, Gui Chou.

E, Gui Jiayin, Yi Mao, Bing Chen, Ding Si, Wu Wu, No, Xin You, Ren Xu, Gui Hai, Jia Zi, Yi Chou.

As can be seen from the above, in the lunar month, the earthly branches are fixed, but the heavenly stems are not fixed, and they can only be discharged after calculation. Note: Lunar leap month is not recorded.

For example, 2006 is the year of "Xu Bing" and "Chetian Gan" is the subtitle of "C". In the third line of the above table, the first month is Geng Yin, the second month is Xin Mao, the third month is Ren Chen, and so on.

Sixth, the method of quickly checking the date of dry branches

The formula for calculating the branch date from the known date is:

g = 4C+[C/4]+5y+[y/4]+[3 *(M+ 1)/5]+d-3

z = 8C+[C/4]+5y+[y/4]+[3 *(M+ 1)/5]+d+7+I

Where c is the number of centuries minus one, y is the last two digits of the year, m is the month and d is the number of days. 65438+ 10 and February are calculated according to 65438+March and 65438+April of the previous year. Odd months i=0 and even months i=6. The remainder of g divided by 10 is heavenly stems, and the remainder of z divided by 12 is earthly branches.

When calculating, the number with [] indicates rounding.

For example, check the trunk and branch days of April 1 day, 2006. Substitute the numerical value into the calculation formula.

g = 4 * 20+[20/4]+5 * 06+[06/4]+[3 *(4+ 1)/5]+ 1-3 = 197

Divided by 10, the remainder is 7, and the seventh place is' Geng'.

z = 8 * 20+[20/4]+5 * 06+[06/4]+[3 *(4+ 1)/5]+ 1+7+6 = 2 13

Divided by 12, the remainder is 9, and the ninth branch is' Shen'.

The answer is: April 2006 1 day is Geng Shen day.