The two major U.S. stock exchanges are the Nasdaq and New York Stock Exchange, or NYSE. Combined, they are what most people refer to as the "stock market."

Here's a look at the stock market holidays for 2015, when the exchanges will either be closed or otherwise not follow their usual 9:30 a.m. to 4 p.m. trading hours:

Date Holiday New York Stock Exchange Nasdaq
Jan. 1 New Year's Day Closed Closed
Jan. 19 Martin Luther King Jr. Day Closed Closed
Feb. 16 Presidents Day Closed Closed
April 3 Good Friday Closed Closed
May 25 Memorial Day Closed Closed
July 3 Independence Day (observed) Closed Closed
Sept. 7 Labor Day Closed Closed
Nov. 26 Thanksgiving (U.S) Closed Closed
Nov. 27 Day after Thanksgiving Market close at 1 p.m. Market close at 1 p.m.
Dec. 24 Christmas Eve Market close at 1 p.m. Market close at 1 p.m.
Dec. 25 Christmas Day Closed Closed

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