Muslim holidays are based on the Islamic lunar calendar, so they fall on different dates of the Gregorian calendar every year. In North America in 2016, Eid al-Fitr is set to take place on July 6, with Eid al-Adha occurring on September 12.
The beginnings of Muslim holidays are based on the sighting of the moon, so the exact dates vary depending
on the location. In North America in 2016, Ramadan begins on June 6. A special night called Laylat al-Qadr takes place during one of the last 10 days of Ramadan. The Day of Arafa begins on the evening of September 9, and the Day of Ashura begins on the evening of October 10. Most major holidays take place during the Islamic months of Muharram, Ramadan, Shawwal and Dhul-Hijjah. The Day of Ashura is on Muharram 20, Eid al-Fitr is on Shawwal 1, the Day of Arafa is on Dhul-Hijjah 9, and Eid al-Adha is on Dhul-Hijjah 10.