Tenna (天和) was a Japanese era name (年号,nengō, "year name") after Enpō and before Jōkyō. This period spanned the years from September 1681 through February 1684. The reigning emperor was Reigen-tennō (霊元天皇).
''Tenna gannen (天和元年): The new era name of Tenna (meaning "Heavenly Imperial Peace") was created to mark the 58th year of a cycle of the Chinese zodiac. The previous era ended and the new one commenced in Enpō 9, on the 29th day of the 9th month.
February 5, 1681 (Tenna 1, 28th day of the 12th month): The Great Tenna Fire in Edo.
1681 (Tenna 2): A famine afflicts Heian-kyō and the nearby areas.
March 3, 1683 (Tenna 3, 5th day of the 2nd month): Yaoya Oshichi was burned at the stake for arson.
1683 (Tenna 3): Tokugawa shogunate grants permission for Mitsui money exchanges (ryōgaeten) to be established in Edo.
1683 (Tenna 4): The assassination of Hotta Masatoshi signals the end of government characterized by financial sobriety and stringency, and the beginning of a swing towards extravagance and the expansive spending policies of Tsunayoshi's chamberlains.