Full moon the first full moon of 2000. The true time of a full moon may differ from this approximation by up to about 14.5 hours as a result of the non-circularity of the moon's orbit. See New moon for an explanation of the formula and its parameters. The age and apparent size of the full moon vary in a cycle of just under 14 synodic months, which has been referred to as a full moon cycle. Full moons are traditionally associated with temporal insomnia (inability to sleep), insanity (hence the terms "lunacy" and "lunatic") and various "magical phenomena" such as lycanthropy.
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