In the state of Maine, Patriots' Day in 2025 will be observed on Monday, April 21. This date is determined by the statutory designation of the holiday, which aligns with its observance in Massachusetts.
The date of Patriots' Day is legally established as the third Monday in April. This rule was implemented to create a three-day weekend, shifting the observance from the fixed historical anniversary of the Battles of Lexington and Concord (April 19, 1775). To determine the date for any given year, one identifies the third Monday of that April. In 2025, the Mondays in April fall on the 7th, 14th, 21st, and 28th, making April 21 the third Monday of the month.
As an official state holiday in Maine, the observance on April 21, 2025, means that state, county, and municipal offices, along with public schools and many businesses, will be closed. For numerous school districts, this holiday also signifies the start of a week-long spring vacation. While events like the Boston Marathon are central to the day in Massachusetts, communities throughout Maine hold their own local patriotic commemorations and civic activities.