Article
Eid celebration in Sholakia, Bangladesh. The largest Eid congregation.
There are two main holidays in Islam that are celebrated by Muslims worldwide: Eid al-Fitr and Eid al Adha. The timing of both holidays are set by the lunar Islamic calendar, which is based upon the cycle of the moon, and so is different from the more common, European, solar-based Gregorian calendar. Every year, the Gregorian dates of the Islamic holidays change.