Yōrō (養老) was a Japanese era name (年号, nengō, "year name") after Reiki and before Jinki. This period spanned the years from November 717 through February 724.[1] The reigning empress was Genshō-tennō (元正天皇).[2]

Change of eraEdit

  • 717 Yōrō gannen (養老元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Reiki 3, on the 17th day of the 11th month of 717.[3]

Events of the Yōrō eraEdit


  1. ^ Nussbaum, Louis-Frédéric. (2005). "Yōro" in Japan Encyclopedia, p. 1058, p. 1058, at Google Books.
  2. ^ Titsingh, Isaac. (1834). Annales des empereurs du Japon, pp. 65–67; Brown, Delmer M. (1979). Gukanshō, pp. 271–272; Varley, H. Paul. (1980). Jinnō Shōtōki. pp. 140–141.
  3. ^ Brown, p. 272.
  4. ^ Titsingh, p. 65.
  5. ^ Titsingh, pp. 65–66.
  6. ^ Asakawa, Kan'ichi. (1903). The Early Institutional Life of Japan: A Study in the Reform of 645, p. 13.
  7. ^ Titsingh, p. 66.
  8. ^ a b Titsingh, p. 67.


  • Asakawa, Kan'ichi. (1903). The Early Institutional Life of Japan. Tokyo: Shueisha. OCLC 4427686; see online, multi-formatted, full-text book at openlibrary.org
  • Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. ISBN 978-0-520-03460-0; OCLC 251325323
  • Nussbaum, Louis-Frédéric. and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
  • Titsingh, Isaac. (1834). Nihon Ōdai Ichiran; ou, Annales des empereurs du Japon. Paris: Royal Asiatic Society, Oriental Translation Fund of Great Britain and Ireland. OCLC 5850691
  • Varley, H. Paul. (1980). A Chronicle of Gods and Sovereigns: Jinnō Shōtōki of Kitabatake Chikafusa. New York: Columbia University Press. ISBN 9780231049405; OCLC 6042764

External linksEdit

Preceded by Era or nengō

Succeeded by