Dow holiday

A Dow holiday is a weekday on which the New York Stock Exchange (NYSE) is not open, and so no opening price for the Dow Jones Industrial Average is published. The geohashing algorithm states that it such cases, the opening price from the previous day of active trading should be used.

There are indeed other holidays on which the NYSE closes early; however, an opening price is still published on these days and can be used.

2008 Holidays =

Holiday	Date in 2008	Use opening price from
New Year's Day	Tuesday, January 1, 2008	Monday, December 31, 2007
Martin Luther King, Jr. Day	Monday, January 21, 2008	Friday, January 18, 2008
Presidents Day	Monday, February 18, 2008	Friday, February 15, 2008
Good Friday	Friday, March 21, 2008	Thursday, March 20, 2008
Memorial Day	Monday, May 26, 2008	Friday, May 23, 2008
Independence Day	Friday, July 4, 2008	Thursday, July 3, 2008
Thanksgiving Day	Thursday, November 27, 2008	Wednesday, November 26, 2008
Christmas Day	Thursday, December 25, 2008	Wednesday, December 24, 2008

2009 Holidays =

Holiday	Date in 2009	Use opening price from
New Year's Day	Thursday, January 1, 2009	Wednesday, December 31, 2008
Martin Luther King, Jr. Day	Monday, January 19, 2009	Friday, January 16, 2009
Presidents Day	Monday, February 16, 2009	Friday, February 13, 2009
Good Friday	Friday, April 10, 2009	Thursday, April 9, 2009
Memorial Day	Monday, May 25, 2009	Friday, May 22, 2009
Independence Day*	Friday, July 3, 2009	Thursday, July 2, 2009
Thanksgiving Day	Thursday, November 26, 2009	Wednesday, November 25, 2009
Christmas Day	Friday, December 25, 2009	Thursday, December 24, 2009

• Note: Independence Day falls on a Saturday in 2009, and so is observed on Friday by the NYSE.

See also

NYSE Calendar