From Big Diamond speedway's Facebook Page.

PLEASE NOTE THE FOLLOWING SCHEDULE CHANGE! The test and tune and Enduro originally scheduled for Saturday May 4th has been moved to Saturday April 27th. Test and tune will be from 12 to 2 PM with the Enduro starting at 3PM. The AMA motorcycle racing scheduled for that day has been postponed. We are currently looking for another date to reschedule their portion of the show. We apologize for any inconvenience this may cause. Please mark your racing calendar accordingly. Hope to see you there.