Historical Events on March 21
- 537
- 630
- 717
- 1152
- 1188
- 1556
- 1788
- 1800
- 1801
- 1804
- 1814
- 1844
- 1861
- 1871
- 1871
- 1913
- 1918
- 1919
- 1921
- 1925
- 1925
- 1928
- 1935
- 1937
- 1943
- 1945
- 1945
- 1945
- 1946
- 1952
- 1960
- 1963
- 1965
- 1965
- 1968
- 1970
- 1980
- 1983
- 1986
- 1990
- 1994
- 1999
- 2000
- 2006
- 2009