One day 12 o'clock schedule

23: 00 to 0 1 hour.

Ugly, from 0 1 to 03: 00.

Yin Shi, that is, from 3 am to 5 am.

Shi Mao, that is, from 5 o'clock to 7 o'clock.

Chen Shi, that is, from 07: 00 to 09: 00.

Shi Si, from 09: 00 to 1 1: 00.

At noon, that is from 1 1 to 13.

Not yet, that is, from 13 to 15.

The application time is from 15 to 17.

Unitary time, from 17 to 19.

When, that is, from 19 to 2 1.

Time at sea, that is, from 2 1 to 23: 00.

Ten-hour system

Appeared in the pre-Qin period. Five minutes during the day and five minutes at night. According to Sui Shu. Tianwenzhi, the day is early, late, middle and late; Night is A, B, C, D, E (later expressed by the five watch). In other words, it is more important-in ancient times, it was regarded as a watch at night, a watch at sea, a watch in childhood, a watch in childhood, an ugly watch and a watch in Yin Shi.

Divide the night into five classes, beat drums according to each class, and each class has five points. One hour per shift is equivalent to two hours now, which is 120 minutes, so each point in each shift only takes 24 minutes. It can be seen that "cooking at four o'clock and sailing at five o'clock" is equivalent to "65438+ cooking at 0: 00 to 3: 00 in the middle of the night and sailing at 3: 00 to 5: 00". "5: 00 and 3: 00" are equivalent to 3: 00 and 72 minutes in the morning, namely 4: 00 and 1 1: 00 and 96 minutes in the evening, namely 0: 36.