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词条 Pax Calendar
释义

  1. Design

  2. New Year's Day

  3. Alternative proposals by Colligan

  4. Sources and references

{{More citations needed|date=February 2017}}

The Pax calendar was invented by James A. Colligan, SJ in 1930 as a perennializing reform of the annualized Gregorian calendar.[1]

Design

Months of the Pax calendar
No. Name Days
01 January 28
02 February 28
03 March 28
04 April 28
05 May 28
06 June 28
07 July 28
08 August 28
09 September 28
10 October 28
11 November 28
12 Columbus 28
13 Pax (leap week) 7
13/14 December 28

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.

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).

In leap years, a one-week month called Pax would be inserted after Columbus.

To get the same mean year as the Gregorian Calendar this leap week is added to 71 of the 400 years in the cycle.

The years with leap week are years whose last two digits are a number that is divisible by six (including 00) or 99: however, if a year number ending in 00 is divisible by 400, then Pax is cancelled.

Duncan Steel mentions the Pax Calendar proposal:[2]

{{quote|text= 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.}}

New Year's Day

Unlike the International Fixed Calendar, the Pax calendar has a new year day that differs from the Gregorian New Year's Day. This is a necessary consequence of it intercalating a week rather than a day.

The following tables compare the Gregorian dates (left column) of New Year's Day in the Pax Calendar for various years. Dates in December occur in the preceding Gregorian year. Dates in bold are Sundays. The Pax years run sequentially down each column (from second-left to right), and a new column is begun when the year would need to go further up the column. Places marked "leap" means that there was no Pax year in the sequence which corresponded to that Gregorian date.

 Jan 04        1931   Jan 03        1932  1937  1943 Jan 02        leap  1938  1944 1949 1955  '''Jan 01  1928  1933  1939  leap 1950 1956 1961 1967''' Dec 31  leap  1934  1940  1945 1951 leap 1962 1968 1973 1979 Dec 30  1929  1935  leap  1946 1952 1957 1963 leap 1974 1980 1985 Dec 29  1930  1936  1941  1947 leap 1958 1964 1969 1975 leap 1986 Dec 28        leap  1942  1948 1953 1959 leap 1970 1976 1981 1987 Dec 27                    leap 1954 1960 1965 1971 leap 1982 1988 Dec 26                              leap 1966 1972 1977 1983 leap '''Dec 25                                        leap 1978 1984 1989''' Dec 24                                                  leap 1990
 Jan 02           2000 '''Jan 01           leap''' Dec 31           2001 2007 Dec 30 1991      2002 2008 2013 2019 Dec 29 1992 1997 2003 leap 2014 2020 2025 2031 Dec 28 leap 1998 2004 2009 2015 leap 2026 2032 2037 2043 Dec 27 1993 1999 leap 2010 2016 2021 2027 leap 2038 2044 2049  Dec 26 1994      2005 2011 leap 2022 2028 2033 2039 leap 2050  '''Dec 25 1995      2006 2012 2017 2023 leap 2034 2040 2045 2051'''  Dec 24 1996           leap 2018 2024 2029 2035 leap 2046 2052  Dec 23 leap                     leap 2030 2036 2041 2047 leap  Dec 22                                    leap 2042 2048 2053  Dec 21                                              leap 2054 

The next table shows what happens around a typical turn of the century and also the full range (18 Dec to 6 Jan) of 19 days that the Pax Calendar New Year Day varies against the Gregorian calendar.

 Jan 06                                           2301 2307 Jan 05                                           2302 2308 Jan 04                                           2303 leap Jan 03                                           2304 2309 Jan 02                 2101 2107                 leap 2310 '''Jan 01                 2102 2108                 2305 2311''' Dec 31                 2103 leap            2300 2306 2312 Dec 30                 2104 2109                      leap Dec 29                 leap 2110 Dec 28                 2105 2111   2291 Dec 27           2100  2106 2112   2292 2297 Dec 26                      leap   leap 2298 '''Dec 25                             2293 2299''' Dec 24 2091 leap                   2294 Dec 23 2092 2097                   2295 Dec 22 leap 2098                   2296 Dec 21 2093 2099                   leap Dec 20 2094                         Dec 19 2095 '''Dec 18 2096 '''

Alternative proposals by Colligan

Colligan published multiple alternative methods of organising the months, including three 12-month plans in addition to the 13-month plan, and in a follow-up work focuses on two possible 12-month calendars, in which Pax would be between September and October. He also provided two alternatives to the leap week plan, either extending one or two Mondays per year to 48 hours or making Pax a month of 28 or 21 days to be added 18 times in 400 years.[3]

Sources and references

  • {{cite book | year = 1998 | publisher = CMP Books | isbn = 0-87930-496-0 | title = Standard C Date/Time Library: programming the world's calendars and clocks | author = Lance Latham | page = 471}}
1. ^{{cite web | url=http://myweb.ecu.edu/mccartyr/colligan.html | title = Original proposal for the Pax Calendar | author = James A. Colligan | year = 1930 | publisher = Rick McCarty}}
2. ^{{cite book | year = 2000 | publisher = John Wiley & Sons, Inc. | isbn = 0-471-29827-1 | title = Marking Time: The Epic Quest to Invent the Perfect Calendar | author = Duncan Steel | page = 288, 422}}
3. ^{{cite book |last=Colligan |first=James |date=1933 |title=An unchangeable calendar without blank days and with only two days of the present calendar changed |publisher=University of San Francisco| |url=https://books.google.com/books?id=WURDAAAAIAAJ }}
{{calendars}}

2 : Leap week calendars|Specific calendars

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