Powder House Day is observed in New Haven, Connecticut, on or around April 22 each year. This event commemorates the historical events of April 22, 1775, when New Haven joined the American Revolution. The celebration typically features a historical reenactment by the Second Company of the Governor’s Foot Guard, which includes members dressed in bright red coats and tall bearskin hats. The reenactment begins after a memorial service at Center Church on the Green, followed by a march to City Hall. During the reenactment, actors portray Captain Benedict Arnold and his lieutenant as they confront local officials about obtaining gunpowder to support the revolutionary cause. The event highlights Arnold's initial role in the Revolution, despite his later betrayal. Powder House Day has been a memorial event in New Haven since 1904 and is usually celebrated on the Saturday closest to April 22.