The exact time of the child

Sub-hour means from 23: 00 pm to the next morning 1.

Zishi is a time point in the traditional 24 solar terms in China, which refers to the time from 1 in the evening to1in the morning. The exact time will be influenced by some geographical locations and specific years, because the sub-time is determined according to the position of the sun on the ecliptic.

This is a common division method in the ancient time system of China. Ten are A, B, C, D, E, Ji, G, Xin, Ren and Gui, and twelve are Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. In this way, it can be combined into sixty jiazi for chronology and chronology.

In ancient times, time was usually divided into day and night according to sunrise and sunset. The day is called day or daylight, and the night is called night or luminous. People use sundials, water clocks and other tools to measure the passage of time.

Time division in ancient China

In ancient China, 24 hours were divided into 12 hours on average, and each hour was about 2 hours. This system originated from observing the position change of the sun, and each moment corresponds to a branch of the earth.

Every ancient civilization has its own calendar system, such as China's lunar calendar, julian calendar, Hebrew origin and so on. According to the observation of celestial movement and seasonal changes, these calendar systems divide time into different units such as year, month and day.

It should be noted that the ancient time division is more complicated and unique than the modern time system, and the time systems of different civilizations and regions may be different, but China used time as time in ancient times.