Hi Doctortobe,
I don't think anyone in my interview group was notified within 24hours. I have heard that it takes a week, but on interview day, they told me they send out letters in two weeks, so I would wait 2 weeks, then maybe call (if you want the info over the phone)-I personally would rather have it via mail . This one guy i met at NOVA said they called him a few days after the interview-but I don't know if that is typical. Plus, some of the admissions people have been out to the conference in california(?), so maybe that delays the process. Good luck.🙂