Those who live by the IRS April 15 Brainwash Rule shall perish by it.  April 15 is just another spring day (except here in Phoenix, where we hit 100 degrees at a record early date yesterday, it's going to be another summer day).  I used to schedule appointments by 30, 45 and 60 minute intervals, depending on the complexity, but I call myself semi-retired now and most of my remaining clients prefer to send me their stuff.  If they are the type who will wet their pants if returns are not done by some arbitrary date, I'm trying to cut back on work anyway so I can provide more help to those who come to me for advice based on experience and education, not just for clerical work.