N3 - 徹夜てつや
all night, all night vigil, sleepless night
N3 - 夜明けよあけ
dawn, daybreak
N3 - 夜中よなか
midnight, dead of night
N2 - 夜間やかん
at night, nighttime
N2 - 夜行やこう
walking around at night, night train, night travel
N1 - 日夜にちや
day and night, always
N1 - 夜行やぎょう
walking around at night, night train, night travel
N1 - 夜中やちゅう
all night, the whole night
N1 - 夜更かしよふかし
staying up late, keeping late hours, sitting up late at night, nighthawk