Tenbun (天文), also known as Tembun or Temmon, was a Japanese era name (年号,, nengō,, lit. "year name") after Kyōroku and before Kōji. This period started in July 1532 and ended in October 1555.[1] During this time, the emperor was Go-Nara-tennō (後奈良天皇)[2] or Go-Heizei-tennō (後平城天皇)[3].
Events of the Tenbun era
1536 (Tenbun 5, 26th day of the 2nd month): Go-Nara was formally established as emperor.[4]
1542 (Tenbun 11, 25th day of the 8th month): Imagawa Yoshimoto of Suruga Province lost battle with army of Oda Nobuhide.[5]
1543 (Tenbun 12, 25th day of the 8th month): Portuguese ship landed at Tanegashima bringing the first gun into Japan.[6]
1543 (Tenbun 13, 7th month): Flooding in Kyoto and nearby areas.[7]
♯The Northern pretenders did not recognize the Genkō era. Gentoku was used in the Northern Court until 1332. ₪The Shōkyō era was recognized only by the Northern pretenders, not by the Southern Court. ‡ Upon reunification of the Northern and Southern Courts in 1392, Genchū was discontinued. Meitoku was used until 1394.