The spoken usage of "night" as an informal, common Model of "superior night" (wishing just one a restful rest) is common, but I'm undecided what the correct penned equal is - when there is one particular. I have generally made use of 'Night with an apostrophe, normally capitalized: One example https://holdenwj318.shotblogs.com/the-smart-trick-of-night-gangnam-퍼펙트가라오케-karaoke-guide-that-no-one-is-discussing-51901545