Daidō

Daidō (大同) was a Japanese era name (年号, nengō, lit.

"year name") after Enryaku and before Kōnin.

This period spanned the years from May 806 through September 810.

[1] The reigning emperors were Heizei-tennō (平城天皇) and Saga-tennō (嵯峨天皇).

[2]