I interviewed in the afternoon last week. I'm not a morning person so it was a good choice for me. The clinic was pretty empty by the time we took the tour but there were plenty of students to talk to in the sim lab. One good thing that happened was the students that help interview came in the morning and then cut out in the afternoon because they had to study. This could be good or bad, but it was one less person on the interview panel so a little less stressful if you ask me.