Eid al-Adha (Arabic: عيد الأضحى ‘Īdu l-’Aḍḥā) "Festival of Sacrifice" or "Greater Bairam" is a religious festival celebrated by Muslims (including the Druze) worldwide to commemorate the willingness of Ibrahim to sacrifice his son Ishmael as an act of obedience to God. However, God provided a ram in place once Ibrahim demonstrated his willingness to follow God's commands.
Eid al-Adha is the latter of two Eid festivals celebrated by Muslims, whose basis comes from the Quran. (Muslims in Iran celebrate a third, non-denominational Eid.) Like Eid al-Fitr, Eid al-Adha begins with a short prayer followed by a sermon (khuṭba).
Eid al-Adha annually falls on the 10th day of the month of Dhul Hijja (ذو الحجة) of the lunar Islamic calendar. The festivities last for three days or more depending on the country. Eid al-Adha occurs the day after the pilgrims conducting Hajj, the annual pilgrimage to Mecca in Saudi Arabia by Muslims worldwide, descend from Mount Arafat. It happens to be approximately 70 days after the end of the month of Ramadan.