nightly — coming or occurring each night: his nightly walk to the newsstand.
part-time — employed to work, used, expected to function, etc., less than the usual or full time: a part-time clerk.
late — occurring, coming, or being after the usual or proper time: late frosts; a late spring.
night — the period of darkness between sunset and sunrise.
late-night — of or occurring late at night: a late-night TV talk show.
noun evening
twilight — the soft, diffused light from the sky when the sun is below the horizon, either from daybreak to sunrise or, more commonly, from sunset to nightfall.
sunset — the setting or descent of the sun below the horizon in the evening.
dusk — the state or period of partial darkness between day and night; the dark part of twilight.
nightfall — the coming of night; the end of daylight; dusk.