April 15th falls on a Sunday this year—but as many appraisers and taxpayers know instead of Monday April 16th, tax returns don’t have to be posted until Tuesday April 17th.  Why? “April 16th is Emancipation Day, a legal holiday in the District of Columbia,” says tax attorney Charles Rubin, partner with Tescher Gutter Chaves Josepher Rubin Ruffin & Forman, P.A. (Boca Raton, FL).  Under a federal statute enacted decades ago, D.C. holidays have a nationwide impact on tax issues.  “Thus the whole country gets until the 17th to file returns.”