Era
20th century
87
1945-
77
1912-1945
45
1989-
37
21st century
24
1868-
23
Edo period, 1600-1868
19
Allied occupation, 1945-1952
18
19th century
17
1868-1912
16
1933-1945
14
1926-1945
13
1945-1989
13
Meiji period, 1868-1912
13
1600-1868
12
Bombardment, 1945
11
To 1868
11
Tokugawa period, 1600-1868
7
Restoration, 1853-1870
6
World War, 1939-1945
6
1760-1849
5
1918-1945
5
1931-1945
5
1333-1600
4
1794-1858
4
Kamakura-Momoyama periods, 1185-1600
4
Tertiary
4
1185-1600
3
1644-1912
3
1878-1967
3
1880-1964
3
18th century
3
1901-1989
3
1912-1949
3
1949-
3
Eocene
3
Heian period, 794-1185
3
Period of civil wars, 1480-1603
3
1831-1904
2
1864-1910
2
1868-1945
2
1885-1923
2
1886-1943
2
1900-1945
2
1911-2006
2
1912-1926
2
1912-1928
2
1921-
2
1928-1937
2
1929
2
more ...