April 26, 1521: After Charles V promises to take firmer measures against his doctrines, Luther leaves the Diet of Worms. A month later, his teachings are formally condemned (see issue 34: Luther's Early Years).
April 26, 1877: Residents of Minnesota observe a state-wide Day of prayer, asking deliverance from a plague of grasshoppers that had ruined thousands of acres of crops. The plague ended during that summer.
April 26, 1992: Worshipers celebrate the first Russian Orthodox Easter in Moscow in 74 years.