Eid al-Adha (Arabic: عيد الأضحى ʿīd al-aḍḥā, [ʕiːd ælˈʔɑdˤħæː], “Festival of the Sacrifice”), also called the “Sacrifice Feast” or “Bakr-Eid”, is the second of two Muslim holidays celebrated worldwide each year, and considered the holier of the two. It honors the willingness of Ibrahim (Abraham) to sacrifice his son, as an act of submission to God’s command, before God then intervened sending his angel Jibra’il (Gabriel) and informs him that his sacrifice has already been accepted. The meat from the sacrificed animal is preferred to be divided into three parts. The family retains one third of the share; another third is given to relatives, friends and neighbors; and the remaining third is given to the poor and needy.
In the Islamic lunar calendar, Eid al-Adha falls on the 10th day of Dhu al-Hijjah and lasts for four days on the 13th day. In the international (Gregorian) calendar, the dates vary from year to year drifting approximately 11 days earlier each year.
http://www.onegreeting.com/