List of Gregorian Islamic observances


 * February 1: World Hijab Day
 * Second Sunday in February: International Purple Hijab Day
 * February 20: Promised Reformer Day (Ahmadiyya)
 * February 28: Teachers' Day (Arab states)
 * March 23: Promised Messiah Day (Ahmadiyya)
 * May 27: Caliphate Day (Ahmadiyya)
 * July 11: Imamat Day (Nizari Ismaili Shiʿi Muslims)