Patriots' Day is a state holiday in Maine observed annually on the third Monday of April.
The observance commemorates the Battles of Lexington and Concord, which occurred on April 19, 1775, and marked the beginning of the American Revolutionary War. Originally celebrated on the fixed date of April 19th, the holiday was later moved to the third Monday of the month to create a three-day weekend. Maine shares this tradition with Massachusetts, as it was part of the Commonwealth of Massachusetts until 1820.
As a result of this scheduling, the specific calendar date of Patriots' Day varies each year, but its occurrence on the third Monday in April is constant. State, county, and municipal government offices and many schools in Maine are closed in observance of the holiday.
