The Anniversary of Khomeini's Death is observed in Iran on June 4 each year, corresponding to the 14th day of Khordad in the Iranian calendar. This public holiday commemorates Ruhollah Moosavi Khomeini, a significant religious and revolutionary leader who played a pivotal role in the Iranian Revolution. Khomeini, who was given the title of Ayatollah in the 1950s, led various protests against the Shah's regime, including a clerical strike in 1962 and a boycott of the White Revolution in 1963. His continued opposition resulted in multiple arrests and eventual exile in 1964, but he returned to Iran on January 31, 1979, following the Shah's departure. The holiday serves as a reminder of Khomeini's influence in establishing the Islamic Republic of Iran, following a referendum in May 1979 that supported this change.