How did the ancients time?

It was used in the Western Zhou Dynasty. In the Han Dynasty, it was named Midnight, Crow, Pingdan, Sunrise, Food Time, Horn, Japan-China, Sundial, Sunset, Dusk and Man's Decision. It is also expressed by the twelve earthly branches, and it is the child time from 23: 00 to 1 at midnight, the ugly time from 1 to 3: 00, and the Yin Shi time from 3: 00 to 5: 00, which are recursive in turn.

2.24-hour system.

After the Song Dynasty, every 20 hours were divided into two parts, namely, early childhood, early childhood, early ugliness, and early ugliness ..... In turn, it happened to be 24 hours, which is consistent with the current 24 hours a day.

3. Ten-hour system.

Appeared in the pre-Qin period. Five minutes during the day and five minutes at night. According to Tian Wenzhi of Sui Shu, the days are morning, evening, noon and evening, and the nights are A, B, C, D and E (later represented by Wu Geng).

4. Five-hour system.

Its names are Chen Ming, Yong Ming, Dan Ming, flea (early) food, banquet (late) food, corner, center, less return, shop time, big return, high return, low return, county (hanging) east, dusk, and ding faint. See Huai Nan Zi. Astronomical training.

5, a hundred minutes.

That is to say, day and night are divided into a balanced one hundred quarters. Its production is related to the use of missing prints. May have originated in Shang Dynasty. In the Han Dynasty, it was changed to 120, and in the Southern Dynasty, it was changed to 96, 108. After many twists and turns, it was not until the introduction of European astronomical knowledge in the late Ming Dynasty that the reform of 96 engraving books was put forward and made it a formal system in the early Qing Dynasty.

6. Ancient times did not necessarily have strict temporal significance, but there were quite a few common and commonly used names.

Generally speaking, sunrise can be called Dan, Zao, Chao and Chen, and sunrise can be called evening, dusk and evening. When the sun is in the middle, it is called noon, noon and pavilion noon, when it is near noon, it is called angle, and when it is west, it is called day and sun. After sunset, it is dusk. After dusk, it's up to people. After a person is appointed, it is midnight (or midnight). After midnight, the chicken crowed. After the cock crow, it is ignorant and dull-this is the time when it is already dawn. The ancients had two meals a day, and the last meal was before sunrise, which was called eating time or eating early; After sundial, before sunset, it is time to have dinner. This time is called "time".