World of Tanks Classic, Season I

Highlander944, on Mar 29 2012 - 17:13, said: Wargamming.
This is my first and our clan's first tourney like this. I see we are in Div 11 and there are 9 battles scheduled. I understand that the first battle begins Saturday at 8pm EDT, is this correct? Now my question is this. Is the second battle at 8:15 or 8:20? For other Tourney's it was a match with the first to get 3 wins, but this is different. So I'm assuming the battles have to start at given intervals. Since a match can take 15 minutes, I'm guess that interval is like 20 minutes.
Or... is there only one match per night? That would mean we only play each team once.
Could you please detail exactly how this works.
Thank you.