WW era

Pre-WWI

1831
1845 - 1852
1853 - 1856
1864
1865
1866
1870 - Approx. 1890
1870 - 1871
1889
Approx. 1891 - 1905
8 February 1904 - 5 September 1905
June 22, 1905

WWI

1914 - 1918
Jun 28, 1914
June 28, 1914
Jun 28, 1914 - 1918
Jun 28, 1914
Aug 4 1914
Feb 4, 1915
May 7, 1915
1917
1917
Nov 29 1917
November 11, 1918
1919

Between WWs

1918 - 1922
1929 - 1939
January 30, 1933
1934
1936 - 1939

WW2

march 12 1938 - march 13 1938
1939 - Feb 1945
1939
5/10/1940
1941
june 22 1941 - june 23 1941
December 7, 1941
June 6 1944
February 4, 1945 - February 11, 1945
April 30, 1945 - May 1945

Long events

1809 - 1882
1871 - 1940
1889 - 1945
1900 - Present
1946 - 1958
1958 - 2014