I'd even be okay with the 1 week point as there are local applicants who we have on the wait-list that we could probably get to take the interview in that period of time. But to cancel the night before really makes little sense. And I assure you, it goes noticed! I have seen some PD's send out a message on the CORD Listserve in years past. I don't agree with doing that, but it is really unprofessional to cancel that late without some serious emergency. There are a lot of applicants nationwide who would like that interview spot!