子时

子時
shí
11 pm-1 am (in the system of two-hour subdivisions used in former times)

CEDICT

  1. (literary) the hours of the rat (11:00pm to 1:00am)
  2. the hours of the rat (11:00pm to 1:00am)

Wiktionary

古代十二地支计时子时夜晚十一一时时间

重編國語辭典

Entry Composition