Praelector, John Latimer, explains the graduation ceremony 

Sending our Caius graduands heartfelt congratulations and well wishes on what would have been your graduation day in Cambridge. If you can't come to Caius, we are determined to come to you to celebrate this wonderful achievement, mark the start of a new chapter and tell you that 'Once a Caian, Always a Caian'. We are looking forward to keeping in touch, helping you along the way, and of course welcoming you back to College when it is safe to do so.