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Events

May 15 - The three-year-old Constantine VII, the son of Emperor Leo VI, is crowned as co-emperor of the Byzantine Empire by Patriarch Euthymius I at Constantinople. The ceremony is held in the Hagia Sophia. After the rituals, Constantine is crowned and becomes Leo's successor.
Europe
August 3 - Battle of Eisenach: An invading Hungarian force defeats the East Frankish army under Duke Burchard, killing him, together with Duke Egino and Rudolf I, bishop of Würzburg. The Hungarians devastate Thuringia and Saxony as far north as Bremen, returning home with many spoils.
Duke Atenulf I of Benevento attacks the Saracens at the Garigliano River, with the assistance of Naples and Amalfi. Crossing the river, Atenulf defeats an Arab army and reaches the walls of their fortified camp. However, the sudden withdrawal of the Neapolitans renders the siege useless.
Ireland
September 13 - Battle of Belach Mugna: In an alliance with the kings Cerball mac Muirecáin of Leinster, Cathal mac Conchobair of Connacht, and Cellach mac Cerbaill of Osraige, High King Flann Sinna defeats the forces of King Cormac mac Cuilennáin of Munster near Castledermot.
Arabian Empire
August 13 - Abbasid caliph al-Muktafi died and he was succeeded by his nominated heir, his younger brother Jafar.

File:Abbasid Dinar, struck under the reign of Al-Muktafi Billah.png|200px|thumb|Gold dinar of Al-Muqtafi, Abbasid caliph

December 17 - Husayn ibn Hamdan leads a revolt to depose the newly-appointed Abbasid Caliph Al-Muqtadir in Baghdad. He installs his uncle Abdallah ibn al-Mu'tazz and kills vizier Al-Abbas ibn al-Hasan al-Jarjara'i, but fails to murder Al-Muqtadir. This leads, finally, to the coup's collapse.
Winter - Snow falls in Baghdad. According to Arabic writings, even rivers are frozen.
China
March 26 - Emperor Taizu of Later Liang has the 15-year-old Li Zhu, the last Tang Dynasty emperor, poisoned. Li Zhu receives the posthumous name of Ai.
May 1 - Emperor Wang Jian of Former Shu puts his adoptive son Wang Zongji to death. He orders Wang Zongji's associates to be exiled.
June 9 - The generals Zhang Hao and Xu Wen assassinate Yang Wo. He is succeeded by his 11-year-old brother Yang Longyan as ruler of the Wu Kingdom.
June 18 - Xu Wen murders Zhang Hao and takes over as Yang Longyan's regent, and sole commander of the imperial guard. He becomes de facto ruler of the Wu Kingdom.