Two Day PHTA Certified Pool and Spa Operator CPO Certification Class: 8:00am to 5:00pm Thursday & Friday. You should arrive no later than 7:45 — Lecture on both days starts at 8:00am promptly. You need to bring a government- issued picture ID (i.e. Drivers License, Passport etc.), calculator, pencil and paper. A continental breakfast and snacks will be provided both days and you will be free to choose your own lunch options.