Ancient imperial palace solar terms tell the time

2.2 1:00-23:00 is the second duty day.

3. 23:00-0 1:00 is the third night.

4.0 1:00-03:00 is the fourth duty day.

5.03:00-05:00 is the fifth duty day.

In the ancient imperial palace, the staff on duty were divided into four classes, which were called "Class Five". Therefore, there are five classes in one night, and the time between the two classes is 2.4 hours. One moment is a watch, the third day is a watch, the whole time is a watch, ugly is a watch, and Yin is a watch.

Extended information The original description of time by the working people in ancient times mainly referred to obvious astronomical phenomena, animal biological clocks and daily routines, such as crowing, pingdan, supernatural, Japanese-Chinese and human orders. Later, they gradually used the readings of timing equipment to describe time. Later, they gradually added five elements to the readings of these timing equipment.

Divide a day and night into 12 hours, expressed by 12 earthly branches, and each hour is equal to two hours in modern times. Comparison between ancient and modern times: from 11: 00 p.m. to 1: 00 a.m. the next day, from 1: 00 to 3: 00 in ugly times, from 3: 00 to 5: 00 in Yin Shi, and so on. Every two hours, it is Shi Mao, Chen Shi, Shi Si, Noon, Weishi, Youshi, Urumqi and Shihai.

References:

Baidu encyclopedia-time