Each month, World Wrestling Entertainment holds one or two annual pay-per-view events. One event is usually three hours long and features six to twelve matches. Jan-Royal Rumble, Feb-No Way Out, March/April-WrestleMania, April-Backlash, May-Judgment Day, June-One Night Stand&Vengeance, July-The Great American Bash, Aug-SummerSlam, Sept-Unforgiven..