I noticed that Expo quietly posted their dates for 2022: October 19-22. Unfortunately a family trip took precedent for me since the dates weren't available during the 2021 show, and there really doesn't seem to be any pattern to the dates. Luckily I should be able to make it for Thursday night.
The website is dreadful and times out on me, so I'll post a screenshot of some of the pertinent info here. Everything else looks to be stale info from 2021.