Islamic Revolution Day, also known as 22 of Bahman, is a significant annual event in Iran. It commemorates the Iranian Revolution's climactic phase, which saw the Ayatollah Ruhollah Khomeini return to the country and the overthrowing of the Mohammad Reza Shah Pahlavi. The revolution, which took place in 1979, marked a shift from a monarchial system to an Islamic Republic.

Islamic Revolution Day is a public holiday in Iran, meaning institutions and businesses are often closed for the day. Parades and mass meetings are organized, especially in Tehran, where thousands gather at Azadi Square to celebrate. Citizens take to the streets across various cities, demonstrating unity and expressing support for their country's doctrines. The rise of the Islamic Republic aimed to bring social justice, economic stability, and international independence.

During the celebrations, Iranians also rejoice in their cultural and historical heritage. The day doubles as a celebration of Iran's rich culture and traditional values, which have survived hundreds of years. This holiday also serves as a day on which Iranians reflect on the ideals and goals of their revolutionary leaders, fostering a sense of national pride and an opportunity to understand the nation's unique history and political landscape.