Date Holiday
January 1st New Years Day
Third Monday in January Martin Luther King Jr.´day
Third Monday of February President´s day
Last Monday of May Memorial Day                         
July 4th Independence Day
First Monday of September Labor Day
(September 11* Patriot´s Day*)
October 12th Columbus Day
Fourth Thuersday of November       Thanksgiving
December 25 Christmas

Federal Holidays:

(Gesetzliche Feiertage in den Vereinigten Staaten)

Source: www.usa.gov