I added this as an update to the original post, but thought I should do a new post as well so everyone sees it.
It appears that 17:00 UTC is the most common choice for everyone for the new time, so that’s what we’ll go with. New chat time starts tomorrow (Thursday, 5/8).
I’ve already made the change in the sidebar and in the blue Welcome box at the top. See everyone tomorrow at the new time. 🙂