NOTE: ON THE NEW FACEBOOK 2012 this does not work. Simply go to the Events page and click the "Past Events" tab. The following page will show all of your past events sorted by most recent event at the top. Please keep in mind that you cannot edit the event times for an event that has passed. This actually shows all past events you have been invited to, not only the past events you created. NEW INFO: https://www.facebook.com/whateverthenameofthefacbookgrouporpersonis/events?key=past