The time and date of my convocation was just announced. It’s on June 21 at 10:00am. That’s the same day as the summer solstice. There is a website with more information about the ceremony, but most of the pages just say “Information coming soon.”
I don’t know how many tickets I’ll be allowed, but I know in the past students have always been running around trying to buy extra tickets for all of their family members to see them graduate.