About 2 million Muslims from more than 70 countries journey to the holy city of Mecca each year to make the spiritual pilgrimage known as the Hajj. The pilgrimage is one of five Pillars of Islam that form the framework of Islamic life. All Muslims who are physically and financially able are expected to perform the Hajj at least once. The Hajj begins on the eighth day of Dhul-Hijjah (month for Hajj), the 12th month of the Islamic year, and lasts for as long as six days.