284

Year 284 (CCLXXXIV) was a leap year starting on Tuesday of the Julian calendar. 

 Events 
 By place 
 Roman Empire 
 The Bagaudae, a group of peasants, revolt in Gaul against the Roman Empire. The Dardani, a region in Illyria, becomes a Roman province.  
 Emperor Numerian travels through Bithynia (Asia Minor).  He is murdered on his way home to Rome. 
 November 20 – Gaius Aurelius Valerius Diocletianus, age 39, is made emperor. 
 Sabinus Julianus, Roman usurper against Emperor Carinus, revolts in Pannonia. He attacks northern Italy and makes himself emperor. 
 Winter – Diocletianus moves with his army across the Balkans.

 By topic 
 Religion 
 Patriarch Rufinus I succeeds Patriarch Dometius as Patriarch of Constantinople.

 Births 
 Jin Huidi, Chinese emperor of the Jin Dynasty (d. 313)

 Deaths 
 Diophantus, Greek mathematician (approximate date)
 Marcus Aurelius Numerian, Roman Emperor 
 Sun Hao, last emperor of the Kingdom of Wu (b. 242)
 Xin Xianying, daughter of Xin Pi (b. 205)

Category:280s