As observed by the Federal Reserve:

January 1
January 21 
February 18 
May 27 
July 4
September 2 
October 14 
November 11 
November 28 
December 24
December 25

New Year's Day
Martin Luther King, Jr., Day
Presidents' Day
Memorial Day
Independence Day
Labor Day
Columbus Day
Veterans' Day
Thanksgiving Day
Christmas Eve (close at 1:00PM)
Christmas Day