also: しょうきゅう
noun
Jōkyū era (1219–1222)
Japanese era name (年号) spanning 1219.4.12 to 1222.4.13. Also read as Shōkyū, but Jōkyū is standard. Primarily encountered in historical contexts, especially the Jōkyū War (承久の乱).
承久の乱は1221年に起こった。
The Jōkyū War broke out in 1221.
この文書は承久三年のものである。
This document is from the third year of the Jōkyū era.
The era name 承久 was adopted in the Kamakura period. The exact derivation is uncertain; it is conventionally associated with the kanji 承 (receive, succeed) and 久 (long time).