was a after Kōhei and before Enkyū. This period spanned the years from August 1065 through April 1069.Nussbaum, Louis-Frédéric. (2005). "Jiryaku" in ; n.b., Louis-Frédéric is pseudonym of Louis-Frédéric Nussbaum, see Deutsche Nationalbibliothek Authority File . The reigning emperors were and .Titsingh, Isaac. (1834). Annales des empereurs du japon, pp. 162-166; Brown, Delmer et al. (1979). Gukanshō, pp. 311-314; Varley, H. Paul. (1980). Jinnō Shōtōki. p. 197-198.
Change of Era 1065 : 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.Brown, p. 313.
Events of the Jiryaku Era April 3, 1066 (Jiryaku 2, 6th day of the 3rd month): Halley's comet appeared in the east at first light.Pankenier, David et al. (2008). 1068 (Jiryaku 4, 14th day of the 8th month): Ceremonies for starting construction on rebuilding the Coronation Hall, which had been destroyed by fire.Kitagawa, Hiroshi et al. (1975). The Tale of the Heike, p. 74. 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).Titsingh, p. 166; Brown, p. 313; Varley, p. 44; 1 distinct act of senso is unrecognized prior to Emperor Tenji; and all sovereigns except Jitō, Yōzei, Go-Toba, and Fushimi have senso and sokui in the same year until the reign of Emperor Go-Murakami.
Notes
References Brown, Delmer M. and Ichirō Ishida, eds. (1979). Gukanshō: The Future and the Past. Berkeley: University of California Press. ; 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. ; 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. ; 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. ; OCLC 6042764
External links National Diet Library, "The Japanese Calendar" -- historical overview plus illustrative images from library's collection