Federal taxes are due this year on April 17th, because the 15th is on a Sunday and Monday is Emancipation Day in the District of Columbia. And last year, or maybe the year before, the federal tax filing deadline was also delayed, then by Patriot's Day, which is a state holiday in Massachusetts (celebrating the outbreak of the American Revolutionary war at the battles of Lexington and Concord).
My question is: has this been a regular periodic occurrence and I only noticed it recently? Or is this something new, deferring the federal tax filing on account of such state (and District) holidays?
Michael