...is in fact extended to April 17. Here it is straight from the horse's mouth. I had heard some say 16th and some say 17th. This clears it up.
Being the devious character I am, I have to wonder, could we not somehow have all 365 days declared legal holidays in various parts of the country and therefore avoid paying taxes altogether? I can see it now....
(What was that old Johnny Paycheck song?)