丙へい夜や

noun

third division of the night (approx. 11pm to 1am)

Archaic term from the traditional Chinese timekeeping system, dividing the night into five watches. 丙夜 corresponds to the third watch, roughly 11 p.m. to 1 a.m. Not used in modern everyday Japanese.

• 古こ典てん文ぶん学がくでは、丙へい夜やは夜よるの第だい三さんの刻こく限げんとして登とう場じょうする。

  In classical literature, 丙夜 appears as the third period of the night.