Return of Ruhollah Khomeini to Iran, Bahman 12. On this day in 1979, Ruhollah Khomeini returned to Tehran from exile in France after 15 years. His arrival at Mehrabad Airport was greeted by a massive crowd, with estimates suggesting several million people gathered in the streets and around the airport to welcome him. This event marked a pivotal moment in the course of the 1979 Iranian Revolution and rapidly accelerated political changes in the country. Following Khomeini's return, strikes and public protests intensified, placing significant pressure on the existing government. In the days that followed, revolutionary institutions began to form, and many officials of the previous regime either resigned or were removed from their positions. These developments paved the way for major changes in Iran's political structure. Khomeini's return and the subsequent events are considered among the most significant occurrences in modern Iranian history. The anniversary is commemorated each year in Iran with various ceremonies and events, holding a prominent place in the collective memory of the nation. This observance was officially designated in the national calendar after the victory of the Islamic Revolution in 1979 due to its decisive role in shaping contemporary Iranian history. According to Islamic Republic sources, this observance is registered and presented in the official calendar in this form and with these descriptions.