15 selected
- Not filled in
- Jamaica - British colony (1660-1961)
- Jamaica - Independent State within Commonwealth (1962-present)
- Japan - Edo period (1603-1868)
- Japan - Heisei epoch (1989-2019)
- Japan - Komei epoch (1846-1867)
- Japan - Mutsuhito epoch (1867-1912)
- Japan - Reiwa epoch (2019-present)
- Japan - Showa epoch (1926-1989)
- Japan - Taisho epoch (1912-1926)
- Japanse bezetting van China (1932-1945)
- Jersey - British Crown Dependency (1204-present)
- Jordan - Kingdom (1949-present)
- Judea - Hasmonean (140-40 BC)
- Judea - Herodian dynasty (40 B.C.-93)
- Judea - Procuratoren (6-135)