GOLDEN NUMBER

By referring to the astronomical tables at the beginning of the Prayer Book, it will be seen that a large proportion of them are simply calculations of the day on which Easter will fall in any given year, and, by consequence, the moveable feasts depending on it. In the early Church, it is well known that there were many and long disputes on this point, the Eastern and Western Churches not agreeing on the particular day for the celebration of this festival. To remove these difficulties, the Council of Nice came to a decision, from which the following rule was framed, viz. “Easter day is always the first Sunday after the full moon which happens upon or next after the 21st day of March; and if the full moon happens upon a Sunday, Easter day is the Sunday after.” To determine the time of Easter in any year, it was therefore only nece ary to find out the precise time of the above full moon, and to calculate accordingly. Now if the solar year exactly corresponded with the lunar, the time of the paschal moon would be liable to no variation, and Easter would fall on the same day of every year; but as the lunar year is really shorter than the solar, by eleven days, it follows that the paschal moon must, for a course of years, always happen at a different period in each succe ive year. If then the above rule be observed, the time of Easter may vary from the 22nd of March to the 25th of April, but somewhere within these limits it will always fall. Hence the adoption by the Council of Nice of the Metonic Cycle , by which these changes might be determined with tolerable accuracy. From the great usefulne of this cycle, its numbers were usually written on the calendar in letters of gold, from which it derived the name of Golden Number .