Today is Saturday, March 21, the 80th day of 2026. There are 285 days left in the year. Today in history: On March 21, 1963, the United States closed Alcatraz Federal Penitentiary; over 1,500 inmates had been jailed at the island prison off the coast of San Francisco, California, over its three decades of use. Also on this date: In 1873, the Spanish National Assembly abolished slavery in Puerto Rico, then a Spanish colony; enslaved people were required to work for three more years for their former owners. In 1933, Germany’s Nazi government established its first concentration camp in the...