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Glossary History Timeline

Chōkyū (長久) was a Japanese era name (年号, nengō, literally "year name") after Chōryaku and before Kantoku. This period spanned the years from November 1040 through November 1044.^[1] The reigning emperor was Go-Suzaku-tennō (後朱雀天皇).^[2]

• 1040 Chōkyū gannen (長久元年): The new era name was created to mark an event or series of events. The previous era ended and the new one commenced in Chōryaku 4, on the 10th day of the 11th month of 1040.^[3]

• 1040 (Chōkyū 1, 1st day of the 1st month): a partial solar eclipse, predicted for midday, occurred in mid-afternoon. The delay caused complaints about the astronomers' lack of accuracy.^[4]
• 1040 (Chōkyū 1, 9th month): The Sacred Mirror was burned in a fire.^[5]
• 1041 (Chōkyū 2): The Sanjo Palace burned; and it was reconstructed.^[6]

• Ackroyd, Joyce. (1982) Lessons from History: The Tokushi Yoron. Brisbane: University of Queensland Press. ISBN 978-0-702-21485-1; OCLC 7574544
• 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 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