Ecclesiastical full moon century AD computists of some churches, among which were the Church of Rome and the one of Alexandria, had begun to calculate their own periodic sequences of dates of paschal full moon, to be able to determine their own dates of Easter Sunday. The motivation for these experiments was a dissatisfaction with the Jewish calendars that Christians had hitherto relied on to fix the date of Easter. These Jewish calendars, according to their Christian critics, sometimes placed Nisan 14, the paschal full moon and the day of preparation for the Jewish Passover, before the spring equinox (see Easter). The Christians
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