Shōan (Japanese era, 1299–1302)

Background: the nengō system

Japan's era-name system, commonly called nengō, assigns a name to a span of years and is used alongside regnal and civil dating. The term "year name" reflects that practice: eras could be changed for a variety of reasons, including imperial succession, auspicious omens, natural disasters, or political decisions. Shōan is one such short era within this long-running calendrical tradition.

Chronology and rulers

Shōan covered parts of the years 1299–1302. During this interval the imperial throne was occupied by two emperors: Go-Fushimi and Go-Nijō. The era follows Einin and is immediately succeeded by Kengen, showing the sequence of era names used to mark time in medieval Japan.

Context and significance

Shōan falls within the broader Kamakura period, when real political power was largely exercised by the shogunate and its regents rather than the court. Although the era itself is brief, it forms part of a patchwork of short named eras typical of medieval Japan. Such eras are useful for historians tracing legal documents, temple records, and court chronicles.

Quick facts

• Era name: Shōan (正安)
• Duration: April 1299 – November 1302
• Emperors during Shōan: Go-Fushimi; Go-Nijō
• Preceded by: Einin; succeeded by: Kengen

For research or citation purposes, Shōan is primarily of interest to scholars of medieval Japanese chronology and the institutional history of the imperial court and Kamakura bakufu. Records dated by era name allow precise placement of events within the shifting political framework of the time.