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.
The Moon is made of green cheese cheese" in this proverb simply refers to a young cheese (sometimes "cream cheese" is used), though modern people may interpret the color reference literally. There was never an actual historical popular belief that the Moon is made of green cheese ("cf.", Flat Earth and the myth of the Flat Earth). It was typically used as an example of extreme credulity, a meaning that was clear and commonly understood as early as 1638. There exists a family of stories in comparative mythology in diverse countries that concern a simpleton who sees a reflection of the Moon and mistakes it for a