The first day of fasting for the Muslim holy month of Ramadan in Mecca, Saudi Arabia will be either Wednesday, February 18 or Thursday, February 19, depending on the sighting of the new moon. Other countries follow their own moon sightings. Some use astronomical calculations for lunar phases, while others rely on traditional local sightings to confirm the start of the new month. Recommended Stories list of 3 itemsend of list Ramadan is determined by the Islamic lunar calendar, which begins with the sighting of the crescent moon. Saudi Arabia and other Muslim-majority countries rely on the testimonies of moon sighters to determine the start of the month. How is the Ramadan moon sighted? For the moon to be visible, the crescent must set after the sun. This allows the sky to be dark enough to spot the small sliver of the new moon. After the sun sets on the night of February 17, the 29th day of the month of Shaban in the Hijri calendar, moon sighters face west with a clear view of the horizon for …