Unbelievable crowd at hajj 2009 Images

The Hajj (Arabic: حج‎ Ḥaǧǧ) is a pilgrimage to Mecca. It is currently the largest annual pilgrimage in the world, and is the fifth pillar of Islam, a moral obligation that must be carried out at least once in their lifetime by every able-bodied Muslim 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 7th to 13th day of Dhu al-Hijjah, the 12th month of the Islamic calendar. Because the Islamic calendar is a lunar calendar, eleven days shorter than the Gregorian calendar used in the Western world, the Gregorian date of the Hajj changes from year to year. In 2007, the Hajj was from December 17–21; in 2008 from December 6–10, and in 2009 it was from November 25–29. Ihram is the name given to the special state in which Muslims live whilst on the pilgrimage, The Hajj is associated with the life of Islamic prophet Muhammad from the 7th century.