GROUPON Calendar Codes:
GPN-OCCR-OP20 = Groupon Open Circuit Classroom- Open water 20m/66ft
GPN-OCCW-OP20=Groupon Open Circuit Confined Water- Open water 20m/66ft pool session
GPN-OCCO-OP20=Groupon Open Circuit Check Out - Open water 20m/66ft open water sessions
GPN-Nitrox = Groupon Nitrox Classroom
GPN-OCCR-OP20 = Groupon Open Circuit Classroom- Open water 20m/66ft
GPN-OCCW-OP20=Groupon Open Circuit Confined Water- Open water 20m/66ft pool session
GPN-OCCO-OP20=Groupon Open Circuit Check Out - Open water 20m/66ft open water sessions
GPN-Nitrox = Groupon Nitrox Classroom