Club finals specific start time?

It's shocking to me that this isn't clearly posted anywhere.  There is a whole discussion on Reddit about the start time and no one can agree on it! 

https://www.reddit.com/r/EASHL/comments/1rfcf0g/are_club_finals_tonight_at_midnight_est_or/

Hey there. They start at 10 AM PST tomorrow.

There is a notice in game saying 1 day, but it would be nice if this had the time as well. I'll pass on the feedback. Thanks!

Is there going to be a way to block people from joining multiple clubs during the playoffs?

I'm not aware of any plans to block using free agents in Club Finals.

when do club finals end?

There's currently 3 days left. You can see this in game in the upper left of the WoC menu.