1. On April 21, 1831, the University of Michigan was founded in Ann Arbor. The school was originally called the "Catholepistemiad," which means "a university comprising all the branches of knowledge."

2. In 1956, Detroit Tigers player and manager Mickey Cochrane was inducted into the Baseball Hall of Fame. Cochrane is considered one of the best catchers in baseball history and helped lead the Tigers to two World Series championships.

3. On April 21, 1967, anti-Vietnam War protesters held a large demonstration in Ann Arbor. The protest was one of many that took place across the country during this time period.

4. On this day in 1986, the Michigan State Spartans won the NCAA Men's Basketball Championship, defeating the Indiana Hoosiers 74-64. It was the first national championship for the Spartans since 1979.

5. April 21, 2015 was declared "Queen's Day" in honor of the band Queen, who performed their first ever concert in the United States at Michigan State University's Jenison Fieldhouse on this day in 1974. The proclamation was made by the mayor of East Lansing, where the concert took place.