How did heavenly stems and earthly branches work out what year this year is and what is the starting point of the heavenly stems and earthly branches calendar?

How did heavenly stems and earthly branches work out the year?

How to calculate "year, month, day and hour" with heavenly stems and earthly branches? I'm curious too.

After consulting some materials, I found that to use heavenly stems and earthly branches to calculate time, we must first understand the concept of "calendar".

The "trunk calendar", also known as ephemeris, solar calendar, Jiazi calendar and China Gregorian calendar, is mainly composed of four parts, namely trunk calendar, trunk calendar, trunk calendar and trunk calendar.

The dry calendar is a combination of ten days and twelve earthly branches, with twenty-four solar terms and December as the basic content.

The specific contents of the 10th and 12th trunk branches have been written before, so I won't repeat them here. You can have a look if you are interested.

60 combinations are shown in the figure.

60 combinations of trunks and branches

The 24 solar terms are as follows:

Beginning of spring, Rain, Creeping, Vernal Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu, Dashu, beginning of autumn, Chushu, Bailu, Autumnal Equinox, Cold Dew, Chufrost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

Group 60 and 24 solar terms should be familiar to everyone, so what is the construction of 65438+ February?

65438+February is the "sun month" according to the 24 solar terms.

Among the 24 solar terms, beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Daxue and Xiaohan correspond to silver moon, Uzuki, Chen Yue, Mitsuki, Wuyue, Yue Wei, Shenyue, Youyue, Moon, Haiyue, Ziyue and Ugly Moon respectively.

According to this calendar, silver moon is the first month and the beginning of a new year.

note:

The first month here is different from the lunar calendar algorithm we use now.

The lunar calendar is based on the official calendar, but it is not completely equal to the official calendar. The first day of the first lunar month is the first day of the first lunar month, the official calendar in beginning of spring is the first day of the first lunar month, and the first day of the first lunar month is not necessarily beginning of spring.

Having said that, let's talk about how to use heavenly stems and earthly branches to calculate the year, month, day and hour.

All the calculations here are related to the current lunar time, the first day of the first lunar month is the beginning of the New Year, and the solar terms in beginning of spring are the beginning of the new moon.

Refer to the above figure for the sorting of trunk and branch combinations (60 combinations of trunk and branch).

Regardless of the year, month, day and time, the chronology of the main branches is the combination of heaven and earth. Referring to the above figure, we can get the law that Jiazi appears once every 60 years, once every June (5 years) and once every 60 hours (5 days).

In fact, there are many formulas for calculating time, and the contents are somewhat complicated, so I won't show them here. If you want to know, you can look it up directly on the Internet.

Personally, I think formula calculation is easier to understand, so take formula calculation as an example.

calendar

Calculation formula of monthly expenses (from the beginning of the year to the end of the month):

At the age of Aji, C was the first, and at the age of B Geng, E was the first.

When Bing Xin was thirty, he was looking for Geng, while Ding Yin went with the flow.

If you ask where Wu Gui started, Jia Yin is a good pursuit.

This formula means:

If there is a distinction between "A" and "Self" in a year, that day in beginning of spring in that year is the beginning of "C";

If the year is marked with "B" and "G", the day of beginning of spring in that year is the beginning of "Wuyin Month";

When a year is marked with "C" and "Xin", that day in beginning of spring is the beginning of "Geng".

There are years of "Ding" and "Ren", and the day of beginning of spring in that year is the beginning of "Ren";

In the years of "Hundred Days" and "Jiaxu", that day in beginning of spring was the beginning of "Jiayin Month".

When the main branch (when the sun rises) calculation formula:

A joined a, b heptyl c for the first time,

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

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

This formula means:

If this day is marked with "a" and "self", the children's time is "a children's time";

If this day is marked with "B" and "G", the sub-time is "C sub-time";

If this day is marked with "C" and "Xin", the child time is "Wuzi time";

If this day is marked with "Ding" and "Ren", the child time is "Gengzi time";

If this day is marked with "E" and "Deck", the child's time is "when the child is not born"

The year, month and hour branches are easier to understand, while the day branch is a little more complicated.

When calculating daily branches, the branches are numbered first.

Classification of stems and branches

The calculation of daily trunk and branch needs to be combined with the solar calendar. To calculate the daily dry branch in which year, we need to know which solar year the daily dry branch is 65438+ 1.

New Year's Day is the month of the year, and the month is the day of the month.

Monthly element formula:

26 plus 17, double minus one in March,

April 06, May 00,

Double plus one, eight plus July 28,

September double plus three, eleven pairs plus four,

Add 39 in October and 40 in December,

Jump from March and add another month.

The number before each formula refers to the month in which the daily trunk branch is located, and the number after addition and subtraction refers to the addition and subtraction of the trunk branch.

This formula means:

It is estimated that the months where the daily trunk branch is located are February and June, with the sky trunk plus one and the ground branch plus seven.

It is estimated that the month where the daily trunk branch is located is March, and both the daily trunk branch and the ground branch are reduced by 1 branch.

It is estimated that the month where the daily trunk branch is located is April, with the sky trunk plus zero and the ground branch plus six.

It is estimated that the month where the daily trunk branch is located is May, and both the daily trunk branch and the underground trunk branch are added with zero.

It is estimated that the month where the trunk branch is located is July, and 1 is added to both trunk branch and ground branch.

It is estimated that the month in which the daily trunk branch is located is August, and the daily trunk branch is plus two, and the ground trunk branch is plus eight.

It is estimated that the month where the main branch of the sun is located is September, and both the main branch of the sun and the branch of the earth add 3.

It is estimated that the month where the daily trunk branch is located is 1 1 month, and the daily trunk branch and the ground branch are both increased by 4.

It is estimated that the month in which the Japanese branch is located is 10, with the Japanese branch plus three and the ground branch plus nine.

It is estimated that the month in which the daily branch is located is December, and the daily branch is added by four, and the ground branch is added by ten.

In every leap year, in any month between March and 1 February, the monthly branches and branches are added with1on the basis of the above addition and subtraction.

Knowing the dry branches in one month of the year, it is enough to calculate the dry branches in other months according to the law.

Knowing the trunks and branches at noon one day, the trunks and branches at other times can also be calculated according to the law.

Knowing the dry branch on a certain day of each month, the rest of the daily dry branch can also be calculated according to the law.

Taking 0: 00 on February 1 day in 2022 as an example, the calculation is as follows:

It's December 20 of the lunar calendar, and it's not the Lunar New Year yet. The last Jiazi year was 1984. According to the law, that year was the year of boxer.

According to the formula, beginning of spring Day in the year of Gengzi (February 4, 2022, the 10th day of the first lunar month) is the beginning of Wuyin month. According to the law, it is now a slight cold solar term, corresponding to the "ugly moon";

Ri Gan He Zhi, 65438+1 October 1, Ji You Day in 2022, Ji You number 6, 10, now February1,6+ 1=7 (G),/kloc-0.

According to the known date, we can know that the time is "Bingzi time";

Therefore, "February 2022 1 0: 00" means "Gengzi Year, Ugly Moon, Chen Geng Day, Bingzi Time".

The above is the calculation of "year, month, day and hour".

I don't know if you have the same problem as me. Are there any Jiazi years, Jiazi months, Jiazi days and Jiazi hours?

The answer is not now.

Because a fixed calendar is used now, the first month starts from silver moon, and the second month corresponds to 1 1 month of the lunar calendar.

Jiazi year can only correspond to Jiayin month and Bingzi month, Jiazi year can't have Jiazi month, and Jiazi year, Jiazi month, Jiazi day and Jiazi time can't exist at the same time.

This article is shared here.

China has a profound culture and a long history.

In the long river of history, countless essences have been precipitated. I want to know my own culture bit by bit.

Faced with these contents, I am a beginner. I can only share what I have learned with you within my limited ability.

The updated content is not perfect, please forgive me.

You are welcome to revise and improve this article in the comments section.

The above is about calculating the year in heavenly stems and earthly branches and sharing it with heavenly stems and earthly branches. I hope this will help you finish reading what the calendar year in heavenly stems and earthly branches is based on!