equinoctial (3) | (adj.) - equal + night = relating to the equinox; one of the two days of the year when day time and night time are equal. |
noctambulist (3) | (noun) - night + walker = sleepwalker; one who walks in their sleep. |
noctilucent cloud (5) | (noun) - night + shine = a thin luminous cloud, often colored, seen at twilight in the upper skies. |
nocturnal (2) | (adj.) - from the Latin word = relating to, occurring in, or active at night. Nocturnally is the adverb form. |
nocturne (5) | (noun) - from the Latin word = a painting dealing with evening or night; a dreamy piano composition. |