Era
1864-1936
1
1883-1945
1
1883-1995
1
1888-1985
1
1898?-1948
1
1899-1986
1
1900-1999
4
1900-2099
2
1920-1970
1
1928-
1
1930-1946
2
1931-1939
1
1939-1975
5
1945-1976
1
1946-1974
1
1950-
1
1962-
1
1970-1973
1
1973-1988
1
1975-1982
2
1982-
1
1988-
1
19th century
7
20e siècle
3
20th century
21st century
10
21th century
1
Civil War, 1936-1939
4
S XIX
1
S XX
2
SXX
2
Siglo 20
6
Siglo XX
6
Since 1900
1
s. 20
1