X10 - April 31, 1984

WARNING - THERE WAS NO APRIL 31, 1984.  1984 is a leap year, but that has no bearing on anything since the extra day for a leap year occurs on February 29th. There are only 30 days in April, so April 31st is non-existent in any year. Watch out for these curve balls that some smart alecks might throw you.