The United States Postal Service (USPS) does not recognize Patriots' Day as a postal holiday. Consequently, all post office locations maintain their regular hours, and mail delivery proceeds on its normal schedule. The distinction lies in the holiday's official status; the USPS observes only federal holidays mandated by the U.S. government.
Patriots' Day is a state-level civic holiday, officially observed on the third Monday in April in Massachusetts and Maine, with observances also held in Connecticut and Wisconsin. It commemorates the anniversary of the Battles of Lexington and Concord, the first military engagements of the American Revolutionary War. In contrast, the USPS operational calendar is governed by federal law, which designates specific nationwide holidays such as Memorial Day, Independence Day, and Labor Day. As Patriots' Day is not on this list of federal holidays, it is treated as a standard business day for all federal agencies, including the postal service.
Therefore, even in states where Patriots' Day is a major public holiday leading to the closure of state government offices, schools, and many private businesses, the federal postal system remains fully operational. Individuals and businesses can expect to send and receive mail and packages without interruption and find their local post office branches open for service.
