I'm not especially attached to any specific start time. Personally, I've got all day, so whenever things work best for everybody else works for me.
Having said that, we need a starting point, so I'm going to propose that we aim for 10 AM Eastern Daylight Time. EDT is UTC-400 (a.k.a. 4 hours behind GMT), if that helps people.
(If we do have people from Europe, then we might want to go for an earlier time, as that is a fairly late start for Europe.)
I don't know what else people have going on that day. If you want a different time, please just say so.
From my perspective, I've got the whole day off, and I'll get up early or stay up late if I have to so that the collab can actually happen. I'm very flexible in terms of start time.