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Ten'yō (天養) was a Japanese era name (年号, nengō, lit. "year name") after Kōji and before Kyūan. This period spanned the year from February 1144 through July 1145.^[1] The reigning emperor was Konoe-tennō (近衛天皇).^[2]

• February 6, 1144 Ten'yō gannen (天養元年): The new era name was created to mark an event or series of events. The previous era ended and a new one commenced on March 27, 1144 (Kōji 3, on the 22nd day of the 2nd month).^[3]

• 1144 (Ten'yō 1, 7th month): A new era name was created because a comet was sighted in the sky in the 7th month of Ten'yō gannen.^[4]
• 1145 (Ten'yō 1, 8th month): The empress Taiken-mon In, mother of former-Emperor Sutoku died.^[4]
• 1145 (Ten'yō 1): The emperor went to Iwashimizu Shrine and to the Kamo Shrines.^[4]

• 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