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The Pax calendar was invented by James A. Colligan, SJ in 1930 as a perennializing reform of the annualized Gregorian calendar. == Design == Unlike other perennial calendar reform proposals, such as the International Fixed Calendar and the World Calendar, it preserves the 7-day week by periodically intercalating an extra seven days to a common year of 52 weeks = 364 days. The common year is divided into 13 months of 28 days each, whose names are the same as in the Gregorian calendar, except that a month called ''Columbus'' occurs between ''November'' and ''December''. The first day of every week, month and year would be Sunday. In leap years, a one-week month called ''Pax'' would be inserted after ''Columbus''. To get the same mean year as the Gregorian Calendar it adds a leap week to 71 out of 400 years. It does so by adding the leap week ''Pax'' to every year whose last two digits make up a number that is divisible by six or are 99. Years ending with 00 have ''Pax'', unless the year number is divisible by 400. The Pax Calendar proposal is mentioned in the book "Marking Time: The Epic Quest to Invent the Perfect Calendar" (by Duncan Steel, John Wiley & Sons, Inc., 2000, page 288): :''"As a matter of fact, this leap-week idea is not a new one. and such calendars have been suggested from time to time. ... In 1930, there was another leap-week calendar proposal put forward, this time by a Jesuit, James A. Colligan, but once more the Easter question scuppered it within the Catholic Church."'' Colligan's original 1930 proposal is reprinted on Rick McCarty's (Website ) on Calendar reform. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pax Calendar」の詳細全文を読む スポンサード リンク
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