The spoken use of "night" as a casual, familiar Model of "great night" (wishing a person a restful rest) is popular, but I'm undecided what the correct penned equivalent is - when there is one particular. I've often used 'Night using an apostrophe, generally capitalized: "Working day and night time" https://datingwebsitesoulmate68887.blogadvize.com/45928258/the-night-gangnam-퍼펙트가라오케-karaoke-guide-diaries