When is the second watch?

Second, 2 1-23 o'clock, a total of two hours 120 minutes.

In the past, there were five classes in one night, each class lasted about two hours, divided into eight quarters, and the last moment of an hour was the last minute.

A watch, 19-2 1 min; Second, look, 2 1-23; Night, midnight, 23- 1 (midnight); Four more, ugly, 1-3 points; Even, cloudy, 3-5 o'clock (even cock crow); 7 am, 7-9 am

Extended data:

The way of dividing time in ancient times:

Heavenly stems and earthly branches is twenty-two Chinese characters used in ancient times, including ten heavenly stems, namely, A, B, D, E, G, N, N; There are twelve branches, namely Zi Chou Yin Mao and Tatsumi Shen You Xu Hai at noon.

Divide 24 hours a day and night into 12 hours. They are Zi Shi, Chou Shi, Yin Shi, Shi Mao, Chen Shi, Shi Si, Noon Shi, Wei Shi, Shen Shi, You Shi, Qi Shi and Shi Hai.

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