Zach Snyder to Host Snyder Cut 'Justice League' HBO Max Fan Screening Todd Spangler, provided by FacebookTwitterEmail HBO Max next week will throw an exclusive fan watch party of “Zack Snyder’s Justice League,” the much-hyped, four-hour version of the DC superhero movie, featuring a live video discussion with Snyder himself. The special watch party will kick off at 4 p.m. PT/7 p.m. ET on March 18, the day the movie is slated to premiere on WarnerMedia’s HBO Max streaming service. The event is being produced by co-viewing platform Scener, available at snydercut.scener.com (where fans can register to attend). An active HBO Max subscription is required to join the watch party — but otherwise, there’s no additional charge to attend.