A regnal year is a latin word meaning kingdom.
Kansei (1789–1801)
Kyōwa (1801–1804)
Bunka (1804–1818)
Bunsei (1818–1830)
Tenpō (1830–1844)
Kōka (1844–1848)
Kaei (1848–1854)
Ansei (1854–1860)
Man'en (1860–1861)
Bunkyu (1861–1864)
Genji (1864–1865)
Keio (1865–1867)
Meiji (1868–1912)
Taishō (1912–1926)
Shōwa (December 25, 1926 – January 7, 1989)
Heisei (January 8, 1989 – present)