Happenings: One Poster Happenings: One Amazon » eBay » The film "Happenings: One" is 21 minute from 1962.. Happenings: One Details Title: Happenings: OneYear: 1962Duration: 21m Rate this title Have you seen Happenings: One? Rate it between 1 to 10 below. Log in to your account if you want to rate this title.