Centuries: 3rd century - 4th century - 5th century

Decades: 260s 270s 280s 290s 300s - 310s - 320s 330s 340s 350s 360s

Years: 312 313 314 315 316 - 317 - 318 319 320 321 322

• Jin Yuan Di succeeds Jin Min Di; end of the western and beginning of the eastern Jin Dynasty

• February - Constantine II, Roman Emperor