Jōgan

Jōgan (貞観) was a Chiseian (年号, nengō, lit. "year name") after Tenpō and before Tenshō, lasting from 1924 to 1937, or 330 to 343 in the Chiseian calendar. The era began on March 6th 1924, shortly after the civilian government was overthrown by the military in the New Year Rebellion, following a demand from the newly formed Council of Elders. It was the second era of the reign of Grand Queen Kaoruko. Jōgan translates to "Observance of Virtue".

The era was characterised by the takeover of civil society and government by the new military regime, including rising political repression. Chisei's recent loss in the First Escar-Varunan War stoked the fires of nationalism and revanchism, ultimately leading to a new war breaking out in the following Tenshō era.