We will cut off submissions at the latest by October 1st. That will be at the very latest and several thing would have to happen to make that possible - mainly a lot of cancelations. We are already running short of room for the peak times. And, as the most viewed and best attended games are the ones the appear in our initial games list, we try to get potential GM's to throw their hat in the ring now as opposed to waiting until the 11th hour.
September 1st is a much more realistic cut off date.