The special days of the Islamic year
The Islamic year has several sacred and notable days, set by the lunar Hijri calendar, so they move about eleven days earlier each Gregorian year. The four sacred months are Dhul-Qadah, Dhul-Hijjah, Muharram, and Rajab.
Dates and differences
The dates shown are calculated from the Umm al-Qura calendar and may differ by a day from local moon sighting. Some occasions, such as the Mawlid and mid-Shaban, are observed by some Muslims and not by others, and the exact date of events like Isra and Miraj is not firmly established. They are listed here for reference, not as a ruling.
The most emphasized days
Among the most emphasized in authentic practice are the Day of Arafah (fasting for those not on Hajj), Ashura (fasting the ninth and tenth of Muharram), seeking Laylat al-Qadr in the last ten nights of Ramadan, and the two Eids.