Anniversary of the 1299 Coup (Rise of Reza Shah), Esfand 3. On this day in 1299 in the Iranian calendar, a military coup led by Reza Khan Mirpanj and Seyyed Zia'eddin Tabataba'i took place in Tehran, resulting in significant changes to Iran's political structure. The event involved the entry of military forces into the capital and the seizure of key centers of power, leading to the dismissal of the existing government and the beginning of a new era of governance. The coup of Esfand 3 is considered a turning point in modern Iranian history. Following this event, Reza Khan gradually consolidated power and eventually became monarch in 1304, founding the Pahlavi dynasty. The coup was carried out with the participation of approximately 2,500 military personnel and the support of certain political and military figures of the time. Its aftermath included extensive reforms in the country's administrative and military structures and major changes in Iran's domestic and foreign policies. In the Shahanshahi calendar, the anniversary of this coup was officially recognized as a significant event. This observance was specifically added to the calendar in the year 2479 Shahanshahi to commemorate the rise of Reza Shah and the subsequent transformations. During the Pahlavi era, the day was marked by official ceremonies and commemorations in some governmental and military institutions. The importance of this event continues to be noted by researchers and those interested in contemporary Iranian history.
