Ecclesiastical full moon a transliteration of the Aramaic word meaning Passover. The date of Easter is determined as the first Sunday after the "paschal full moon" falling on or after March 21 (the ecclesiastical fixed date for the Spring Equinox; the actual Equinox can fall on March 19, 20 or 21). This "full moon" does not currently correspond directly to any astronomical event, but is instead the 14th day of a lunar month, determined from tables. It may differ from the date of the actual full moon by up to two days. The use of tables instead of actual observations of the full
Splitting of the moon describes an actual event at the time of the Prophet, but it clearly refers to the end of the world. Some Muslim scholars argue that an astronomical event must have happened at that time, which made it appear as if the moon had been split in two, because the phenomenon was seen at least in India as well. One such possible lunar event could be a large asteroid hitting the moon, and the plume and debris from the strike blocking enough lunar view to make it appear as if the Moon had split in two. A second possibility could be