This year Eid al-Adha, the Festival of Sacrifice, falls on the evenings between Thursday, August 31st through Friday, September 1st.
Eid al-Adha is one of the holiest days in Islam. It honors the willingness of Ibrahim to sacrifice his son to show submission to Allah’s command. Just when Ibrahim was about to kill his son Ishmael upon Allah’s command, God put a sheep in his place. Muslims use Eid al-Adha to celebrate Ibrahim’s complete obedience to the will of God and is a reminder of their own willingness to sacrifice anything to follow God. Some Muslims will sacrifice a cow, goat or sheep in honor of Eid al-Adha. Muslims will often take a day off work, wear their best clothes, and attend a prayer service at their Mosque (per Metro UK).
CLICK and check out this super informative vid from The Telegraph (it will only take you a minute, promise!).