SCHEDULE « All Events This event has passed. The Glimmerglass Festival: Oklahoma! July 8, 2017 - August 22, 2017 Event Navigation « The Glimmerglass Festival: Young Artist Program The Glimmerglass Festival: The Siege of Calais » + Google Calendar+ iCal Export Details Start: July 8, 2017 End: August 22, 2017 Website: https://glimmerglass.org/festival/mainstage/oklahoma/