|When is Patriots' Day in 2015?|
The date of Patriots' Day 2015 is on Monday, April 20th.
|What is Patriots' Day?|
Patriots' Day, sometimes spelled Patriot's Day, is an annual civic holiday, celebrated in Massachusetts, Maine, and Wisconsin, that commemorates the anniversary of the Battles of Lexington and Concord that occured on April 19th, 1775. The Battles of Lexington and Concord were the first battles of the Revolutionary War in the United States. Patriots' Day is celebrated every year on the third Monday in April.
The Boston Marathon is held every year in Boston, Massachusetts, United States on Patriots' Day.