"Night and Day " is a song written by Cole Porter for the 1932 play The Gay Divorcee; it subsequently became an American standard and has been peformed and recorded by dozens of artists, notably Frank Sinatra.
Night and Day is the 1946 movie about Cole Porter's life, which stars Cary Grant.
Night and Day is also the name of a recorded anthology of Cole Porter's music.
Night and Day is a novel by Virginia Woolf set in Chelsea . It begins "It was a Sunday evening in October".