Zoroastrianism Timeline

Life of Zoroaster according to modern scholar estimations.

Zoroaster develops his new vision of religious truth which becomes Zoroastrianism.

Life of Zoroaster, according to Pahlavi sources.

Zoroastrianism is adopted by the Achaemenid Empire.

Zoroastrianism is continued by the Parthian Empire.

Zoroastrianism becomes Persian state religion under the Sassanian Empire.

Zoroastrian religious literature committed to writing under the reign of Shapur II of the Sassanian Empire.

Reign of Kosrau I of the Sassanian Empire; Zoroastrian religious works written and codified.

Muslim Arab conquest of Persia; Zoroastrianism/Zorvanism is suppressed and forcible conversion efforts instituted.