also: しょうへい
noun
Jōhei era; Shōhei era
Japanese era name spanning 931–938 CE. The reading じょうへい is standard; しょうへい is a less common variant.
承平年間に平将門の乱が起こった。
The rebellion of Taira no Masakado occurred during the Jōhei era.
この文書は承平五年のものとされている。
This document is dated to the fifth year of the Jōhei era.
The era name 承平 was adopted in 931 CE during the reign of Emperor Suzaku. The exact derivation is uncertain, but it likely follows the classical Chinese practice of selecting auspicious characters.