366

Events 

 January 31 – Athanasius of Alexandria returns from his fifth exile.
 April – Emperor Valens defeats the troops of Procopius in the Battle of Thyatira.
 Valens builds a pontoon bridge across the Danube.  This lets the Visigoths travel farther north.
 The Tabula Peutingeriana, a map showing Roman places and roads, is made about this time.
 October 1 – Damasus I becomes 37th pope.

 Births 

 Yao Xing, emperor of the Chinese Qiang state Later Qin

 Deaths 

 Acacius of Caesarea, bishop and Christian leader of Arianism
 September 24 – Pope Liberius
 Marcellus, general and Roman usurper
 May 27 – Procopius, Roman usurper
 Yu Daolian, empress and wife of Jin Feidi
 Zhi Dun, Chinese Buddhist monk and philosopher