HOUSE BILL NO. 6186 A bill to designate the third Monday in April of each year as Patriots' Day. the people of the state of michigan enact: Sec. 1. To commemorate the American Revolutionary War battles of Lexington, Concord, and Menotomy, the legislature declares that the third Monday in April of each year shall be known as "Patriots' Day". HOUSE BILL NO. 6186 A bill to designate the third Monday in April of each year as Patriots' Day. the people of the state of michigan enact: Sec. 1. To commemorate the American Revolutionary War battles of Lexington, Concord, and Menotomy, the legislature declares that the third Monday in April of each year shall be known as "Patriots' Day".