- Jul 11 Signing of the Treaty of Saint-Clair-sur-Epte between Charles the Simple and Rollo of Normandy
- Sep 2 Viking-monarch Oleg of Kiev-Russia signs treaty with Byzantines
- Oct 1 During a siege in Constantinople, the Theotokos (Mary, the mother of Jesus) appeared at the church in Blachernae holding her veil over the praying faithful, among them St. Andrew of Constantinople.
- Nov 8 Duke Conrad I chosen as King of East Francia
- Nov 10 Conrad I of Germany [Conrad the Younger] elected as King of East Francia