National Borinqueneers Day is observed worldwide every April 13 to honor the contributions and sacrifices of the 65th Infantry Regiment, a Puerto Rican regiment of the United States Army. This day commemorates the regiment's distinguished service in various military conflicts, including World War I, World War II, and the Korean War, during which they earned the nickname "The Borinqueneers." The date was chosen to mark the awarding of the Congressional Gold Medal to the regiment in 2016, recognizing their impact on American history. Events held on this day celebrate the bravery and service of the veterans of the 65th Infantry Regiment and pay tribute to Puerto Rican and Hispanic service members who died in the line of duty. National Borinqueneers Day was officially established following the passage of the National Defense Authorization Act in 2020, despite a presidential veto, and the inaugural celebration took place in 2021.