In ancient times, one day 12 hour. What time do they mean in modern times?

Zi Shi, Chou Shi, Yin Shi, Shi Mao, Chen Shi, Shi Si, noon, Wei Shi, Shen Shi, You Shi, Shu Shi and Shi Hai correspond to 23: 00 to 1, 1 to 3: 00, 3: 00 to 5: 00, 5: 00 to 7: 00 and respectively. 15 hours to 17 hours, 17 hours to 19 hours, 19 hours to 2 1 hour, 2 1 hour to 23 hours.

In ancient China, the twelve-hour system was widely used, and each earthly branch corresponded to a fixed time period (hour). In ancient China, one day and night was divided into twelve sections, each called one hour, which is now two hours. Every hour has a fixed name. From eleven o'clock at night, the first hour is midnight, that is, from eleven o'clock to one o'clock at midnight.

Extended data

The history of time

1, 12 hour system

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, twelve o'clock was divided into two parts, namely, the beginning of the son, the beginning of the son, the beginning of ugliness, and the beginning of 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 annals, a day is morning, evening, noon and noon. Night is a, b, c, d and e (later represented by five tables). In ancient times, it was regarded as night watch, sea watch, home watch, home watch, home watch, home watch, home watch and home watch. There are five classes at night, and drums are played according to the class, with five points for each class.

4. Fifteen-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.