The spoken usage of "night" as an informal, acquainted Variation of "superior night" (wishing one a restful rest) is common, but I am unsure what the proper penned equal is - when there is a person. I have often utilized 'Night with the apostrophe, generally capitalized: By way of example, https://franciscoz0l31.blogunteer.com/36733047/the-greatest-guide-to-night-gangnam-퍼펙트가라오케-karaoke-guide