I have completed all the requirements of my Masters’ degree. However, my convocation / graduation is not until October can I still apply?Date of Approval of convocation of degree

The NSRP would ultimately require proof of convocation. However, once all program requirements are completed, it is possible to apply to registration as a psychologist once the steps are completed that are noted in the following FAQ:You can let him know that the NSRP has approved his doctorate effective on the date that was indicated in the letter from the university. According to professional standards, a registrant should not use the degree to refer to him or herself in their workplace until, the date when NSRP recognizes it, we just have to include this caveat as a precaution.

http://www.nsbep.or/applicants/faq/#register_prior_convocation (this is a new development since June)