The film was screened out of competition at the Cannes Film Festival in May 2007. The film also screened in the Toronto International Film Festival in September 2007. While considered part of a loose trilogy following "The Decline of the American Empire" and "The Barbarian Invasions", Arcand acknowledged in a 2007 interview "Days of Darkness" had more similarities to his less successful 2000 film "Stardom". In 2018, Arcand's "The Fall of the American Empire" followed similar themes as "Decline" and "The Barbarian Invasions".