I think they go into March-April of next year, since application deadlines for a lot of schools aren't until February or March and they take 2-3 weeks to get back to the applicants. However, keep in mind that the later you interview, the harder it will be to secure a spot at the school as most of their class is already full. I've heard Pacific has had a full class while still conducting interviews, so they put you on wait list even if they really like you.