The First Monday dates are on the calendar above. You can do your own calculations. On YOUR calendar, locate the FIRST Monday of each month. Choose the Thursday, Friday, Saturday and Sunday BEFORE that FIRST Monday. You can’t go wrong. Of course, the calendar makes it much easier. Dealers open up about 8 a.m. and close around 6 p.m. Some vendors stay open until dark. The Main Gate and West entrances have handicap accessible parking and mobility scooters available to rent for around $7/hour.