The day commemorates the birth of Imam Ali ibn Abi Talib (circa 600–661), a central figure in Islam, and is also observed as Father's Day in Iran.

The day for the remembrance of Muhammad's journey of Mi'raj. One of the most significant events in the Islamic calendar.

The day in Iran commemorates February 11, 1979, when the Islamic Revolution led to the fall of the monarchy.

The day in Iran commemorates the birth of the twelfth Imam in Shia Islam, who is believed to be in occultation and will reappear as a savior.

The day in Iran marks the nationalization of the country's oil industry on March 20, 1951, under Prime Minister Mohammad Mossadegh.

The day marks the Persian New Year and the arrival of spring, rooted in Zoroastrian tradition and celebrated on or around March 21.

The day in Iran marks the assassination of Imam Ali ibn Abi Talib, the first Shia Imam, who died in 661 CE.

Important religious holiday celebrated by Muslims worldwide that marks the end of Ramadan, the Islamic holy month of fasting (sawm).

Important religious holiday celebrated by Muslims worldwide that marks the end of Ramadan, the Islamic holy month of fasting (sawm).

The day in Iran marks the establishment of the Islamic Republic following a national referendum on April 1, 1979.

The day in Iran commemorates the death of the sixth Shia Imam, Ja'far al-Sadiq, in 765 CE.

The day marks the death of Ayatollah Ruhollah Khomeini (1902–1989), the leader of the Iranian Revolution and founder of the Islamic Republic.

The day commemorates the protests on June 5, 1963, against the arrest of Ayatollah Khomeini, a key moment in Iran’s revolutionary history.

One of the most important Islamic holidays, it honors the willingness of Ibrahim (Abraham) to sacrifice his son, as an act of obedience to God's command. Begins on the tenth day of the Islamic month Dhu'l-Hijjah

The day in Iran commemorates the eve of Ashura and the martyrdom of Imam Hussein, an important event in Shia Islam.

The day is observed on the 10th day of Muharram and is significant in Islam for the martyrdom of Imam Hussein and other historic events.

The day commemorates both the passing of the Prophet Muhammad and the martyrdom of Imam Hassan, significant figures in Islamic tradition.

The day in Iran marks the death of the eighth Shia Imam, Ali al-Ridha (Reza), in 818 CE.

The day in Iran commemorates the death of the eleventh Shia Imam, Hasan al-Askari, in 874 CE.

Traditional commemoration of the birth of Muhammad, falls on 12 Rabi' al-awwal

The day in Iran commemorates the death of Fatima Zahra, daughter of the Prophet Muhammad and revered figure in Shia Islam.