Start Date for PPL Online Courses Date: May 14 Event Category: Professional and Part-time Learning Website: durhamcollege.ca/ppl Details: + Google Calendar+ iCal Export Related Events May 13 Start Date for PPL In-Person Courses Learn more about this event. May 28 Last Day to Register for PPL Semester Courses Learn more about this event. Jun 03 Start Date for PPL Monthly Online Courses Learn more about this event.