The Makkah Prime Meridian
In the Name of Allah---the Most Beneficent, the Most Merciful. Islamic Hijri Calendar is based on the Makkah Prime Meridian. Let's explain, how Islamic Hijri Calendar is based on Makkah Prime Meridian? Most educated Muslims know that the Islamic Hijri calendar is a purely lunar calendar based on the lunation periods of the moon. The Islamic Hijri calendar was adopted by the Muslim community in the reign of Umar ibn Khattab (May Allah be pleased with him). However, very few people know that the Islamic Hijri Calendar is based on the Makkah Prime Meridian. How? Let’s explain. + − Leaflet | © OpenStreetMap contributors Imam ibn al-Jawzi al-Hanbali (May Allah have mercy on him) observes in his treatise Al-Muntaza m (an abridged and refined version of Tarikh al-Tabri ): Imam Saeed ibn al-Musayyib (May Allah have mercy on him) said: "Umar (May Allah be pleased with him) gathered the people and asked them, 'On which day should we begin the calen...