How to record 12 time in ancient times?

In ancient China, one day and night was divided into twelve sections, each called one hour, which is now two hours. In the name of time, counting from eleven o'clock in the evening, the first hour is midnight, from eleven o'clock to one o'clock at midnight.

Time (corresponding to the zodiac)

From twenty-three to one midnight

Clown time is from one to three.

From three to five in Yin Shi.

Shi Mao is five to seven.

From seven to nine in the morning

From nine to eleven.

From eleven to thirteen noon

From thirteen to fifteen.

From fifteen to seventeen.

From seventeen to nineteen.

From nineteen to twenty-one

From 2 1 to 23: 00 in Shihai.

Recycling, one cycle is 12. Often used with Tiangan, 60 cycles.

Guibiao is the earliest astronomical instrument created by China people to measure the length of the 24 solar terms and the tropic year by using the motion law of the sun's shadow.

The sundial is a kind of timer developed on the basis of standard watches. The sundial has fixed arms or needles, and there are also plates engraved with numbers and scales. Divide the plate into many parts and observe the position where the shadow is cast on the plate, and you can tell the different times (in the old TV series, when Liu Bei visited the Three Kingdoms, the plate in Zhuge Liang's yard was a sundial). The sundial can be timed accurately to the minute (15 minutes).

Leaking on the arrow carved by bamboo and wood, according to the length of its ups and downs on the water day and night, it is carved into 100 spaces, and each space is an instant, so it is called "a hundred times". Since the Western Han Dynasty, 12 hour has been used to indicate the change of one day and night. Today, each hour is 2 hours. Twelve hours are named after twelve earthly branches (Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai). The time from 1 1 to children, from 1 to 3 o'clock to clowns, and so on.