Ten'en (天延) was a Japanese era (年号,, nengō,, lit. "year name") after Tenroku and before Jōgen. This period started in December 973 and ended in July 976. The reigning emperor were En'yu-tennō (円融天皇).
Ten'en (天延) was a Japanese era (年号,, nengō,, lit. "year name") after Tenroku and before Jōgen. This period started in December 973 and ended in July 976. The reigning emperor were En'yu-tennō (円融天皇).