Decades: 570s 580s 590s 600s 610s - 620s - 630s 640s 650s 660s 670s

Years: 617 618 619 620 621 - 622 - 623 624 625 626 627

• Hegira - Muhammad and his followers withdraw from Makkah to Medina - starting year of the Islamic calendar.

• Prince Shotoku, Japanese prince, one of the first Japanese to support Buddhism