What is time? How to calculate?

1. A day and a night are divided into twelve hours: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Every hour is equivalent to two hours now.

2. Twelve o'clock: 23 ~ 65438+ 0: 00 a.m., 65438+ 0 ~ 3 a.m., 3 ~ 5 p.m., 5 ~ 7 a.m., 7 ~ 9 a.m., 9 ~1p.m. and 165438. Joint time 17 ~ 19, Chu time 19 ~ 2 1 point, sea time 2 1 ~ 23.

Midnight, also known as midnight and midnight: the first hour of twelve o'clock. (23: 00 to 0 1 hour Beijing time). ?

The ugly cock crows, also known as the pheasant: the second hour of twelve o'clock. (0 1: 00 to 03: 00 Beijing time). ?

Yin Shiping Dan, also known as Dawn, Dawn and Tiandan, etc. The current position time is alternating day and night. (03: 00 to 05: 00 Beijing time). ?

Sunrise in Shi Mao, also known as the beginning of the day, dawn and rising sun, refers to the time when the sun just appeared and Ran Ran first rose (05: 00 to 07: 00 Beijing time). ?

Eating in the morning is also called breakfast. The time for the ancients to "eat in the morning" was also breakfast time (07: 00 to 09: 00 Beijing time). ?

Forty holes are also known as Yu Ri. Near noon, it is called the corner. (09: 00 to 1 1: 00 Beijing time). ?

Noon, also known as sunrise, noon, etc. : (Beijing time 1 1: 00 to 13: 00). ?

Not long ago, it was also called sunset, sun center and so on. : The sun sets in the west. (From Beijing time 13 to Beijing time 15). ?

When applying for timely feeding, it is also called day shop, late eating and so on. (From Beijing time 15 to 17). ?

As time goes by, it is also called sunset, sunset and evening: it means when the sun goes down. (Beijing time is from 17 to 19). ?

Dusk, also known as sunset, sunset glow, dusk, etc. At this time, the sun has set and the sky will be dark. The world is dark and everything is hazy, so it is called dusk. (From Beijing time 19 to Beijing time 2 1). ?

At this time, the night is deep and people have stopped taking a rest. Calm means quiet. (Beijing time 2 1 hour to 23: 00). ?

Ancient watches: watches are the units used by ancient people to measure time at night. One night is divided into five watches, each of which lasts about an hour. Ancient watches were counted by time. The first shift is from 7 pm to 9 pm, the second shift is from 9 pm to 1 1, the third shift is from 1 1, the fourth shift is from 1, and the fifth shift is from 3 pm. Note: "gēng" here is pronounced as "Jē ng" in ancient Chinese. ?

12 time comparison table of Chinese Zodiac and 12 time comparison table: The Chinese Zodiac consists of eleven kinds of animals from nature, namely rats, cows, tigers, rabbits, snakes, horses, sheep, monkeys, chickens, dogs, pigs and legendary dragons. It is used to record the year, and the order is mouse, ugly cow, Yinhu, Maotu, Chen Long and Yinhu. ?

Rats: From 1 1 at night to 1 the next day (that is, "midnight"). At this time, the mouse is the most courageous and active, so it is matched with the mouse when it is young. ?

Bull: 65438+ 0-3 am (that is, "ugly time"). At this time, the cow has eaten enough grass, and the "backward chewing" is the thinnest, slowest and most comfortable, so when it is ugly, it is matched with the cow.

Tiger: 3-5 am (that is, "Yin Shi"). According to ancient books, at this time, the tiger was the most active, fierce and hurtful, so Yin Shi and the tiger became a pair. ?

Rabbit: 5-7 am (that is, "Shi Mao"). At this time, the sun has not yet revealed its face, and the glory of the moon has not completely retired. Jade rabbit is the representative of the moon and the only animal in the myth of the Moon Palace, so it matches rabbits in Shi Mao.

Dragon: 7: 00 a.m. to 9: 00 a.m. ("Chen Shi"). Legend has it that this is when the dragon rains. Dragons are mythical animals, so Chen Shi belongs to dragons. ?

Snake: 9- 1 1 am (namely "Shi Si"). It is said that the snake at this time will not hurt people, nor will it wander on the road where people walk, but will hide in the grass, so the snake at this time belongs to snakes. ?

M: From 1 1 in the morning to 1 in the afternoon (that is, "noon"). According to the Taoist priest, at noon, the sun is at the top, the yang is at its peak, and the yin is gradually increasing. When yin and yang change columns, most animals lie down and rest, but only horses stand habitually, even when sleeping, and never lie down. In this way, it belongs to the horse at noon ?

Sheep: 65438+ 0-3 pm (that is, "untimely"). It is said that sheep urinate most frequently at this time, and the spilled urine can cure a kind of madness, so it belongs to sheep since childhood.

Monkey: 3-5 pm (that is, "Shen Shi"). At this time, monkeys like to crow the most, with the longest and loudest sound. So Shen Shi is a monkey. ?

Chicken: 5-7 pm (that is, "You Shi"). At this time, at sunset on the mountain, chickens began to enter cages and spend the night, so they belonged to chickens.

Dog: 7-9 pm (that is, "time"). When night comes, dogs will watch the house and keep vigil, which produces a special kind of vision and hearing, seeing farthest and hearing most clearly. So when you are a dog. ?

Pig: 9- 1 1 afternoon (that is, "Shihai"). At this time, pigs sleep soundly, snore loudest, muscle shake the most, and gain meat the fastest, so Shihai is a pig. ?

The ancient working people divided a day and night into twelve periods, each of which was called an hour. Twelve days can refer to either a day or any time. Twelve o'clock was created by the ancient working people in China according to the natural laws of the sun, the changes of the sky, daily production activities and living habits.

It was used in the Western Zhou Dynasty. In the Han dynasty, it was named midnight, crow, pingdan, sunrise, food time, corner, day, sundial, sunset, dusk and people's decision. It is also represented by the twelve earthly branches, with the midnight from 23: 00 to 1: 00 as the sub-hour, 1: 00 to 3: 00 as the sub-hour, and 3: 00 to 5: 00 as the Yin Shi time, which are circulated in turn. The twelve o'clock calendar is unique and has a long history. It is an outstanding contribution of the Chinese nation to the astronomical calendar of mankind and one of the splendid treasures of Chinese culture.