Plus Deutsch is German for German, henceforth the explaination on why the Pennsylvania Dutch are called that when they are really German and not Dutch. The Dutch from the Netherlands also got their ethnic name derived from the German term Deutsch as well believe it or not. If you're Dutch, then you are from Denmark.
1 Deadline for filing a 2015 personal, partnership, or calendar year estates/trusts tax returns or extension.  The return or extension must be postmarked or transmitted for e-filing by Monday, April 18, 2016 (April 19 for Maine and Massachusetts residents).
Usually, this extension is for no more than 6 months, unless you are living abroad. If you haven't made the deadline, then you will need to file for an extension online, by mail or with help from your tax preparer. This article will tell you how to extend the deadline for taxes in the United States.