Events

By place

Africa

• The caliphate of Ubayd Allah al-Mahdi Billah (of the Fatimid dynasty) is established after he enters the former Aghlabid capital of Raqqada, in modern Tunisia.

By topic

Religion

• The Benedictine monastery of Cluny is founded.

• Gabriel I of Alexandria becomes Pope of the Coptic Orthodox Church.

Births

• Hedwig of Saxony, mother of Hugh Capet

Deaths

• December 23—Naum of Preslav, Bulgarian scholar

• King Alfonso III of Leon

• Wei Zhuang