423 BC

Centuries: 6th century BC – 5th century BC – 4th century BC

Decades: 470s BC 460s BC 450s BC 440s BC 430s BC – 420s BC – 410s BC 400s BC 390s BC 380s BC 370s BC

Years: 428 BC 427 BC 426 BC 425 BC 424 BC – 423 BC – 422 BC 421 BC 420 BC 419 BC 418 BC

Events

• Xerxes II, King of Persia, is assassinated by order of his half-brother and rival claimant Sogdianus.
• Sogdianus, King of Persia, is assassinated by order of his half-brother and rival claimant Darius II of Persia.
• Darius II becomes sole ruler of the Persian Empire.

Births

Deaths

• Xerxes II, King of Persia (assassination).
• Sogdianus, King of Persia (assassination).