Ansei (安政) was a Japanese era after Kaei and before Man'en and spanned from November 27 (?), 1854 to March 18 (?), 1860. The reigning emperor was Komei.

Change of Era

Due to the disasters of a fire at the Imperial Palace, earthquakes, and the arrival of the Black Ships (Commodore Perry's ships), the era was changed to Ansei (roughly "Quiet/peaceful Government")

Source of Name

From a quote "庶民安政、然後君子安位矣" ("Peaceful rule of the masses, peaceful succession"??)

Events

• December 2, Ansei 2 (1855) - Ansei Earthquake in the area of Edo (modern-day Tokyo)
• Ansei 5 (1858) - Treaty of Peace and Amity (Treaty of Kanagawa) signed
  • Beginning of Ansei Purge at the order of Ii Naosuke
• March 3, Ansei 7 (1860) the disturbance outside the Sakuradamon occurs

The Ansei Purge took place in 5th (1858) and 6th (1859) year of Ansei era.

Ansei	1st	2nd	3rd	4th	5th	6th	7th
Gregorian	1854	1855	1856	1857	1858	1859	1860