The Hajj (Arabic: حج‎ Ḥajj) is the pilgrimage to Mecca, Kingdom of Saudi Arabia. It is the largest pilgrimage in the world, and is the 5th pillar of Islam, are religious that must be carried out at least once in their lifetime by every able-bodied Muslims who can afford to do so. The Hajj is a demonstration of the solidarity of the Muslim people, and their submission to God ( Allah in the Arabic language).

The pilgrimage occurs from the 8th to 12th day of Dhu Al-Hijjah, the 12th and last month of the Islamic Calendar. Because the Islamic calendar is a Lunar calendar, eleven days shorter than the Gregorian Clendar used in the Western world, the Gregorian date of the Hajj changes from year to year. Ihram is the name given to the special state in which Muslims live while on the pilgrimage.