RD Notification Date

<p>I understand that a lot of the regular decision applicants will be hearing early, but what is the official decision date that we are all guaranteed to hear by?</p>

<p>"Regular Decision Candidates
Deadline: Jan. 1 Notification: Apr. 1"
-from their website
I don't know whether that means they'll send the mail on that day, or so it arrives by that date.</p>

<p>except for the the unlikely early write, why would applicants hear early? do you have a source and if so, am i in?</p>