Islam has two official holidays: Eid Al-Fitr and Eid Al-Adha. The former is celebrated at the end of the month of Ramadan, whereas Eid Al-Adha lands on the 10th day of Dhu al-Hijjah (the final month of the Islamic calendar).

It is worth nothing as well, that Shia and Sunni muslims do not celebrate the same holiday schedule, and that practices vary by nation—unsurprising considering there are 1.6 billion Muslims worldwide.