Trading takes place five days a week (Monday-Friday), except on public holidays and other market holidays (when the Exchange is declared closed by Chicago Board of Trade).

Trading hours: 9:30 a.m. - 1:15 p.m. (local time)

HOLIDAYS (2012): 

Date	Holiday	Schedule
Sun-Mon, Jan 1-2	New Year's Day	Closed
Mon, Jan 16	Martin Luther King, Jr. Day	Closed
Mon, Feb 20	President's Day	Closed
Fri, Apr 6	Good Friday	Closed
Mon, May 28	Memorial Day	Closed
wed, Jul 4	Independence Day	Closed
Mon, Sep 3	Labor Day	Closed
Thu, Nov 22	Thanksgiving Day	Closed
Tue, Dec 25	Christmas Day	Closed