Strictly speaking, the 20th century ran from January 1, 1901 to December 31, 2000, although most people prefer to think of it in the sense of the 1900s, which ran from 1900 to 1999.
Years
- 1902
- 1904
- 1905
- 1906
- 1908
- 1910
- 1914
- 1918
- 1921
- 1923
- 1925
- 1926
- 1927
- 1928
- 1929
- 1930
- 1931
- 1932
- 1933
- 1936
- 1937
- 1938
- 1939
- 1942
- 1944
- 1945
- 1946
- 1947
- 1949
- 1950
- 1951
- 1952
- 1954
- 1955
- 1956
- 1957
- 1958
- 1959
- 1961
- 1962
- 1963
- 1965
- 1966
- 1967
- 1968
- 1969
- 1973
- 1975
- 1976
- 1977
- 1979
- 1980
- 1981
- 1982
- 1983
- 1984
- 1985
- 1986
- 1987
- 1988
- 1989
- 1990
- 1991
- 1992
- 1993
- 1994
- 1995
- 1996
- 1997
- 1998
- 1999
- 2000