A global Islamic calendar can be published by precalculating the presence of the Al-Hilal (the first visible crescent moon on earth).
From a historical angle, all of the events and celebrations of Islamic history are recorded in the Hijra Calendar
The Muslim calendar, based purely on lunar cycles, was first introduced by the second Caliph, `Umar ibn Al-Khattab using the event of Hijra
The first ten days of Dhul-Hijjah have been singled out especially for great merits and excellences like no other days in the Islamic calendar
In August 2006, the Fiqh Council of North America announced the exact date for the start of Ramadan based solely on astronomical calculations rather than actual sightings of the new moon. Many around the world protested the validity of such a decision. The debate over visual sighting versus astronomical calculations is not new. This three-part