How did heavenly stems and earthly branches calculate it? What's the expression 24 hours a day? When, from what time to what time?

Heavenly stems and earthly branches's calculation

First of all, we should know that the ordinal numbers of Dryopteris Dryopteris are: 1 (A), 2 (B), 3 (C), 4 (D), 5 (E), 6 (F), 7 (G), 8 (Xin), 9 (N),1. The ordinal numbers of earthly branches are as follows: 1 (Yin), 2 (Mao), 3 (Chen), 4 (Si), 5 (noon), 6 (Not), 7 (Shen), 8 (unitary), 9 (Xu), 10 (.

The remainder of (AD -3)/ 10 is dry; The remainder of (AD 3)/12 is a branch.

For example, what year is 20 18?

(20 18-3)/ 10, and the remainder is 5, corresponding to heavenly stems; (20 18-3)/ 12, and the remainder is 1 1, corresponding to the address. So 20 18 is the year of 1898.

A day is twenty-four hours, which happens to be twelve o'clock in ancient times, thus forming the conversion relationship between two hours and one hour. Specifically, from 23: 00 to midnight 1, 1-3 ugly, 3-5 is Yin Shi, 5-7 is Shi Mao, 7-9 is Chen Shi, and 9- 16544. 13- 15 is not timely, 15- 17 is timely, 17- 19 is one yuan, 19-2 1.

Extended data

Time origin

At midnight (23:00- 1:00), people in ancient China (astronomers or Taoists) looked up at the sky for a long time and suddenly heard a small noise around them. They looked down and saw that the mouse was moving. Over time, people in ancient China found that the time for rats to haunt was midnight. Therefore, when I was a child, I was associated with mice and became a "child mouse", ranking first by the beginning of the day.

It is a major event for farmers to plow the fields with cattle and feed them well. When it's ugly (1 until 3 o'clock), the farmer will get up and feed the cows. When cows are associated with ugliness, they become "ugly cows".

Tigers are fiercest at night from three to five in the morning, and farmers often hear tigers not far away at this time. As a result, the tiger was associated with Yin Shi, and a "Yin tiger" appeared.

From five o'clock to seven o'clock, at dawn, the rabbit ran out of the nest to eat dew grass. Therefore, rabbits are associated with Shi Mao, and hence the "hairy rabbits".

From 7: 00 to 9: 00, it is smog time. It is said that dragons can fly in the clouds, and only in the fog will they "see the head but not the tail". However, dragons are legendary animals and cannot be seen in reality. Only in fog can people have the illusion of dragons. In this way, the dragon will appear in the fog of Chen Shi, and when the dragon is associated with Chen Shi, there will be a "Chen Long".

From 9: 00 to 11: 00, the fog cleared, the sun was shining, and the snake with unstable body temperature climbed out of the cave to bask in the sun. The most active moment of snakes is Shi Si. When making characters, draw the "four" into a snake's pictograph, and naturally connect the "four snakes".

11:00-13: 00, the sun is shining, and "ferocity" reminds people of one of human right-hand men-horses. A fierce horse with a red mane is a good pony, but its temper is as fierce as the midday sun. When horses are associated with noon, there is a "noon horse".

13:00- 15:00, the sun has dried the dew on the grass, which is a good time to herd sheep. As a result, "Weiyang" came into being.

15:00- 17:00, when the sun goes down, or after the rain, the weather looks refreshing. At this time, monkeys like to play and crow in the Woods. People heard it, kept it in mind, and linked this moment with monkeys, so there was a "monkey application".

17:00- 19:00, the sun is about to set, and it's time for domestic chickens to return to their nests. The peasant woman shouted everywhere and blew the chicken into the nest. This time of eating and drinking is also related to the domestic chickens entering the nest, so there is a "one-yuan chicken".

19: 00-2100, people should patrol before going to bed; Followed by them is another assistant of human beings-dogs. Just contact the dog when patrolling and become a "dog".

2/kloc-0: 00 to 23: 00, the owner was very happy to hear the sound of the fat pig arch ditch in the middle of the night. However, if you want pigs to gain weight, you have to get up and feed them. Hai Shi was naturally associated with pigs, so there was a "Hai Pig".

When the twelve characters representing twelve o'clock are combined with the Chinese zodiac, they are: Rat, Ugly Bull, Silver Tiger, Hairy Rabbit, Chen Long, Sishe, Wuma, Weiyang, Shenhou, Ji You, Dog and Haizhu.

The origin of branches: evolved from the characteristics of ancient astrology.

Polaris is considered as a means of transportation to check celestial bodies in the sky. The barrel handle of Polaris constantly changes direction on Sunday or every year as the celestial sphere rotates. Bucket handle called it a bucket building. Bucket construction machines combine the concepts of time and direction into the trunk and branch systems.

In ancient times, the day was called ten and the month was called twelve. The main branch is also called "the day of the day", that is, the twelfth day of the tenth day. "There is something in the sky, it is used in the sky, there is something underground, and it is used in the ground."

By observing the movements of the sun, the moon and the five stars, ancient astronomers divided Sunday into 28 star zones to indicate the positions of the sun, the moon and the five stars, and predicted good or bad luck by observing the changes of the stars.

Astronomically, the ecliptic plane is divided into twelve constellations, corresponding to twenty-eight stars, each of which belongs to its own. Therefore, it is generally believed that the earth-lifting image in the branch discipline comes from the astronomical image of the 28 stars.

Some people think that stems and branches are the names of ancient astrologers. The ancients looked up at the astronomical phenomena and formed twelve astrological branches with one astrological sign every month.

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