This is the text I got in an email to the APPIC-Match list about what to do with interview notifications, for reference:
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[2] INTERVIEW NOTIFICATION
We would like to remind applicants and Training Directors about the APPIC Match Policy regarding interview notification. This policy is designed to make the interview notification and scheduling process considerably easier and less stressful for applicants.
Match Policy #4 states:
4. For Phase I of the Match, internship programs that conduct
on-site or telephone interviews must make a reasonable effort
to notify every applicant who submits a complete set of
application materials as to his/her interview status.
a. Sites that conduct open houses to which all applicants are
invited and conduct no other interviews are exempt from this
interview notification requirement (this process should be
clearly stated in the APPIC Directory Online and/or sites'
publicity materials).
b. Notification of interview status for Phase I of the Match
must occur no later than the interview notification date
that appears in the program's APPIC Directory Online listing
and/or other publicity materials, and may be communicated
via e-mail, telephone, regular mail (to be received no later
than the interview notification date), or other means.
c. For Phase II of the Match, notification of interview status
is not required.
While APPIC continues to recommend a December 15th interview notification date, some internship sites are unable to meet this recommended (i.e., optional) date.
Thus, applicants should consult the APPIC Directory Online to determine the specific interview notification date for each APPIC-member program to which they applied.
It is important for applicants to understand that Training Directors work very hard to meet this notification date, and notifications can sometimes arrive at the last minute. Furthermore, some sites don't send all of their notifications out on the same day. Applicants should contact a site to inquire about their interview status only if they haven't heard from that site by the end of the day on its published interview notification date. Applicants should never make assumptions about their interview status with a site until they have received the notification from that site. In the event that you don't receive an interview notification in a timely manner, then (1) check your "junk mail" or "spam" folder to see if it ended up there, and/or (2) contact the site the day after that site's interview notification date to inquire about your status.
It is imperative that all Match participants be very familiar with the APPIC Match Policies. The complete Match Policies may be found at
http://www.appic.org/Match/Match-Policies .
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I interpret this to mean that, if you haven't heard from a site before their notification deadline, it doesn't matter what shows up here, you should wait. If you haven't heard and it's the day AFTER their deadline, email the training director or admin to follow up (and check your spam filter). So, if your site said 12/4/15 as the notification date on APPIC and you haven't heard, you're well within your rights to follow-up.