Tuesdays and Thursdays as far as I know. I interviewed Tuesday, 10/30, and I know they had interviews today also (Thursday 11/1). The day is pretty cool overall, the tour is nice and the school is amazing. But the panel interview format sucks. I even had a good panel and it still felt really lame. Anyway, good luck, hopefully they'll be accepting some of us in December!
I have to correct my earlier post. There were interviews Tuesday 10/31 and today, 11/2. So I'm thinking they interview Tuesdays and Fridays now. There were none yesterday. Sorry about that!
