Cyrus the Great enters Babylon (539 BCE), Aban 7. On this date, Cyrus the Great, the Achaemenid king, entered the city of Babylon, marking the end of Babylonian rule. The event took place in 539 BCE and is considered a turning point in the history of Iran and the region. Cyrus’s entry into Babylon occurred with little military resistance, and historical accounts mention the release of captives and social changes following this event. Today, this date is recognized in Iran as a symbol of Cyrus the Great’s political leadership and tolerance. Some individuals and groups commemorate the occasion, highlighting its historical significance in the development of ancient civilizations in the region. The anniversary of Cyrus’s entry into Babylon continues to attract interest among those who study Iranian history and culture.