Centuries: 3rd century - 4th century - 5th century
Decades: 290s? - 300s - 310s - 320s - 330s - 340s - 350s? - 360s - 370s? - 380s - 390s
Years: 340? 341? 342? 343? 344? 345? 346? 347? 348? 349?