Sorry guys, last interview of the year is this cmoing Monday, March 15th. Usually we interview well into April but we started earlier this year and have been interviewing larger groups from what I can tell. This way we can get the ball rolling earlier, which is great considering how slow the UC's are traditionally known to be.
The admissions office always says that there is a few acceptances available even for late interviews, but I really don't know anyone that has been accepted without going on the waitlist first with a late interview. Generally though, I would assume to go onto the alternate list and then waiting for decisions in June (when the list moves A LOT). I think my class had 30-40 students come in off the waitlist, so there's a great chance of being accepted.