"Wake Me Up When September Ens" is the fourth single from Green Day's seventh studio album, American Idiot. Released on June 13, 2005, the single peaked at number six in the United States, becoming Green Day's second Top 10 single. It also peaked at number eight in Canada and the UK, while making number thirteen in Australia. The song is well known for its music video, which paints an intimate portrait of a wartime situation.