Market Holidays

The New York Stock Exchange is open from Monday through Friday 9:30 a.m. to 4:00 p.m. ET and will observe the holidays below:

2008
New Year's Day	January 1
Martin Luther King, Jr. Day	January 21
Washington's Birthday / President's Day	February 18
Good Friday	March 21
Memorial Day	May 26
Independence Day^***	July 4^***
Labor Day	September 1
Thanksgiving Day^***	November 27^***
Christmas	December 25
2009
New Year's Day	January 1
Martin Luther King, Jr. Day	January 19
Washington's Birthday / President's Day	February 16
Good Friday	April 10
Memorial Day	May 25
Independence Day	July 3 (observed)
Labor Day	September 7
Thanksgiving Day^***	November 26^***
Christmas^***	December 25^***

^** Washington's Birthday was first declared a federal holiday by an 1879 act of Congress. The Monday Holiday Law, enacted in 1968, shifted the date of the commemoration of Washington's Birthday from February 22 to the third Monday in February, but neither that law nor any subsequent law changed the name of the holiday from Washington's Birthday to President's Day.
Although the third Monday in February has become popularly known as President's Day, the NYSE's designation of Washington's Birthday as an Exchange holiday (Rule 51) follows the form of the federal holiday outlined above (section 6103(a) of title 5 of the United States Code).

^† The NYSE Trading Floor will close early on Tuesday, July 3rd, 2007; Friday, November 23rd, 2007 (the day after Thanksgiving); and Monday, December 24, 2007. The Trading Floor will close at 1:00 p.m. Crossing Session I order entry will begin at 1:15 p.m. with order executions at 1:30 p.m., and Crossing Sessions II, III and IV orders will be accepted beginning at 1:00 p.m. for continuous executions until 1:30 p.m. on these dates.

^*** The NYSE Trading Floor will close early on Thursday, July 3, 2008; Friday, November 28, 2008 (the day after Thanksgiving); and Wednesday, December 24, 2008. The Trading Floor will close at 1:00 p.m. Crossing Session I order entry will begin at 1:15 p.m. with order executions at 1:30 p.m., and Crossing Sessions II, III and IV orders will be accepted beginning at 1:00 p.m. for continuous executions until 1:30 p.m. on these dates.

^**** The NYSE Trading Floor will close early on Friday, November 27, 2009 (the day after Thanksgiving) and Thursday, December 24, 2009 . The Trading Floor will close at 1:00 p.m. Crossing Session I order entry will begin at 1:15 p.m. with order executions at 1:30 p.m., and Crossing Sessions II, III and IV orders will be accepted beginning at 1:00 p.m. for continuous executions until 1:30 p.m. on these dates.

Source: NYSE.com