March 21: This Day That Year
- 1349 - Germany: Black Death riots in Efurt, 3000+ Jews killed.
- 1934 - Japan: Fire destroyed Hakodate town killing 1500+ people.
- 1943 - Assassination attempt failed on Adolf Hitler.
- 1951 - 2,900,000 US soldiers deployed in Korea.
- 1983 - Time Magazine cover causes typo (control=contol), only known typo till date.
- 1990 - Namibia becomes independent of South Africa.
- 2016 - Andrew Grove, Hungarian-American one of the founders and CEO of Intel, dies at (Age 79, born Sep 2, 1936).