Hōan

Hōan was a Japanese era name after Gen'ei and before Tenji. This period spanned the years from April 1120 through April 1124. The reigning emperors were Emperor Toba of Japan and Emperor Sutoku of Japan.

Change of era

February 1, 1120 Hōan gannen: The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Gen'ei 3, on the 10th day of the 4th month of 1120.
Events of the ''Hōan'' era
1121 : The priests of Mount Hiei set fire to Mii-dera.
February 25, 1123 : In the 17th year of Emperor Toba's reign, Toba was forced to abdicate by his father, retired-Emperor Shirakawa. Toba gave up the throne in favor of his son Akihito, who would become Emperor Sutoku. Toba was only 21 years old when he renounced his title; and he had already reigned for 16 years: two in the nengō ''Tennin, three in Ten'ei, five in the nengō Eikyū, two in Gen'ei, and four in the nengō Hōan. At this time, Toba took the title Daijō-tennō.'' The succession was received by his son.
1123 : Emperor Sutoku is said to have acceded to the throne.