, alternatively romanized as Jō-ō or Shōō, was a after Keian and before Meireki. This period spanned the years from September 1652 through April 1655.Nussbaum, Louis-Frédéric. (2005). "Jō-ō" in n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see .
Change of era
1652 : The era name was changed to Jōō (meaning "receiving answers"), which was to mark the death of the third shogun, Tokugawa Iemitsu. The previous era ended and a new one commenced in Keian 5, on the 18th day of the 9th month.
The name of this new era came from the Book of the Jin: "The Xia and the Shang dynasties follow their destinies, so the House of Zhou came when it was time." (夏商承運、周氏応期)
Events of the Jōō era
October 3, 1653 (Jōō 2, 12th day of the 8th month)<!-- NengoCalc 承応二年八月十二日 -->: A violent fire destroyed a large part of the Imperial palace and many temples which were nearby. Shortly thereafter, several girls, aged 12–14 years, were imprisoned for having started this fire and others in Heian-kyō.
August 18, 1654 (Jōō 3, 6th day of the 7th month)<!-- NengoCalc 承応三年七月六日 -->: A famous priest, Ingen, arrived at Nagasaki from China. His intention was to reform the practice of Buddhism in Japan.<ref......