丁てい夜や

noun

fourth division of the night (approx. 1am to 3am)

Archaic term from the traditional Chinese timekeeping system, dividing the night into five watches. 丁夜 corresponds to the fourth watch, roughly 1am to 3am. Not used in modern Japanese.

• 昔むかしの時じ刻こく制せい度どでは、丁てい夜やは丑うしの刻こくにあたる。

  In the old time system, 丁夜 corresponds to the hour of the Ox (around 1am to 3am).