Shōka (正嘉) was a Japanese era name (年号, nengō, lit.
"year name") after Kōgen and before Shōgen.
This period spanned the years from March 1257 to March 1259.
[1] The reigning emperor was Go-Fukakusa-tennō (後深草天皇).
[2] This article about a Japanese era name is a stub.