When Is Hajj or the Pilgrimage to Makkah in 2015?

Muslim Pilgrims Attend Friday Prayer In Makkah
Muhannad Fala'ah/Stringer/Getty Images News/Getty Images

Hajj, the pilgrimage to Makkah, is one of the greatest religious observances in Islam. And in 2015 it fell between September 21-26, 2015.

Note: The exact dates of Islamic holidays cannot be determined in advance, due to the nature of the ​Islamic lunar calendar. Estimates are based on expected visibility of the hilal (waxing crescent moon following a new moon) and may vary according to location. Since the Hajj takes place in Saudi Arabia, however, the world Muslim community will follow Saudi Arabia's determination of the Hajj dates.

2015 Holidays Index