Era
1945-
41
1868-1912
28
1912-1945
23
Since 1945
18
1868-
13
Meiji period, 1868-1912
12
1945-1989
10
19th century
7
20th century
7
Allied occupation, 1945-1952
7
Since 1868
7
1600-1868
6
1868 - 1912
6
1937-1945
6
2011
6
1912 - 1945
5
1926-1945
5
1939-1945
5
1888-1912
4
1939 - 1945
4
To 1868
4
1834-1894
3
1889
3
Guangxu, 1875-1908
3
Meiji period, 1888-1912
3
1644-1912
2
1875-1908
2
1900-1999
2
1912-1949
2
1913-2002
2
1914-1918
2
1926-1989
2
1937-
2
1945 - 1989
2
1945-1964
2
1965-
2
Shōwa period, 1926-1989
2
Tokugawa period, 1600-1868
2
1600 - 1868
1
1794-1858
1
17th century
1
1800-1899
1
1841-1909
1
1853-1942
1
1854-
1
1859-1894
1
1862-1936
1
1863-
1
1864-1910
1
1868
1
more ...