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Jiryaku (治暦) was a Japanese era name (年号, nengō, lit. "year name") after Kōhei and before Enkyū. This period spanned the years from August 1065 through April 1069.^[1] The reigning emperors were Go-Reizei-tennō (後冷泉天皇) and Go-Sanjō-tennō (後三条天皇).^[2]

• 1065 Jiryaku gannen (治暦元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Kōhei 8, 2nd day of the 8th month of 1065.^[3]

• April 3, 1066 (Jiryaku 2, 6th day of the 3rd month): A broom star appeared in the east at first light.^[4]
• 1068 (Jiryaku 4, 14th day of the 8th month): Ceremonies for starting construction on rebuilding the Coronation Hall, which had been destroyed by fire.^[5]
• 1068 (Jiryaku 4, 19th day of the 4th month): In the 4th year of Emperor Go-Reizei's reign (後冷泉天皇4年), he died at age 44; and the succession (senso) was received by his son. Shortly thereafter, Emperor Go-Sanjo is said to have acceded to the throne (sokui).^[6]

• 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
• Kitagawa, Hiroshi and Bruce T. Tsuchida. (1975). The Tale of the Heike. Tokyo: University of Tokyo Press. OCLC 262297615
• Nussbaum, Louis-Frédéric and Käthe Roth. (2005). Japan encyclopedia. Cambridge: Harvard University Press. ISBN 978-0-674-01753-5; OCLC 58053128
• Pankenier, David W., Zhentao Xu and Yaotiao Jiang. (2008). Archaeoastronomy in East Asia: Historical Observational Records of Comets and Meteor Showers from China, Japan, and Korea. Amherst, New York: Cambria Press. ISBN 9781604975871 ISBN 1604975873; OCLC 269455845
• Titsingh, Isaac. (1834). Nihon Odai 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

• National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection