Ten'en
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Ten'en (天延) was a Japanese era (年号, nengō; "year name") after Tenroku and before Jōgen. This period spanned the years from December 973 through July 976. The reigning emperor was En'yū-tennō (円融天皇).
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Ten'en (天延) was a Japanese era (年号, nengō; "year name") after Tenroku and before Jōgen. This period spanned the years from December 973 through July 976. The reigning emperor was En'yū-tennō (円融天皇).