When will in-yin arrive?

The human voice is 3-5 am. In ancient China, the twelve earthly branches divided a day into 12 time periods, which were represented by the twelve earthly branches respectively. Now the human yin is 3-5 o'clock.

When will in-yin arrive?

Twelve o'clock is boxer, Xin Chou, Ren Yin, Gui Mao, Chen Jia, Yi Si, Wu Bing, Ding Wei, Wushen, Ji You, Geng Xu and Xinhai.

The ancients named the time mainly according to the time when animals appeared in the zodiac.

Human voice is one of the main branches, with a rank of 39. The first is Xin Chou, and the last is Gui Mao.