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Subject:
            Re: Inter Grav. & Calends
      Date:
            Sat, 21 Dec 1996 11:32:36 -0800
      From:
            Simon Cassidy <simoncas@pacbell.net>
        To:
            East Carolina University Calendar discussion List <CALNDR-L>

Rodolphe Audette wrote:
 
>Art. 7: (translation): Therefore, in order that the vernal equinox, which
>has been fixed by the Fathers of the council of Nicaea to the XII day[before]
>the calends of April, be brought back to its proper place, we prescribe and
>ordain that, [from] the month of October of the year MDLXXXII, ten days
>starting on the third [before] the nones up to and including the eve of the
>ides be skipped, and that the day which follows the fourth [before] the nones
>(or St.Francis' day) be said the ides of October, on which day...

I would amend this translation only for the words I have put in square
brackets [], all of which I would change to the word "of". The word [before]
seems more informative but is misleading since the XII day "of" the calends of
April is actually eleven days before the 1st. of April (not twelve or XII)!

For those confused by the Kalends, Nones and Ides terminology (and so that
Ivan can implement this terminology authentically in his version of Unix Cal
:)), I give the months of March and of October1582 in this terminology:
 

MARTIUS or MARCH.                      OCTOBER 1582 A.D. (MDLXXXII)
(PERPETUAL GREGORIAN)                  (JULIAN TO GREGORIAN CHANGE)
 
ROMAN           MODERN  DOMINICAL      ROMAN           MODERN  DOMINICAL
TERMINOLOGY.    TERM.   LETTER.        TERMINOLOGY.    TERM.   LETTER.
 
I Kalends Mart. 1st.    d              I Kalends Octob.  1st. (d Julian)
--------------------------             ---------------------------------
VI   Non.       2nd.    e              VI   Non.       2nd.   (e Julian)
V    Non.       3rd.    f              V    Non.       3rd.   (f Julian)
IV   Non.       4th.    g              IV   Non.       4th.   (g Julian)
III  Non.       5th.    A              ------------------------- N.B. --
Prid.Non.       6th.    b              Ides            15th.   A Greg.
Nones           7th.    c              --------------------------
--------------------------             XVII Kal.       16th.   b Greg.
VIII Idib.      8th.    d              XVI  Kal.       17th.   c  ..
VII  Idib.      9th.    e              XV   Kal.       18th.   d  ..
VI   Idib.      10th.   f              XIV  Kal.       19th.   e  .
V    Idib.      11th.   g              XIII Kal.       20th.   f
IV   Idib.      12th.   A              XII  Kal.       21st.   g
III  Idib.      13th.   b              XI   Kal.       22nd.   A
Prid.Idib.      14th.   c              X    Kal.       23rd.   b
Ides            15th.   d              IX   Kal.       24th.   c
--------------------------             VIII Kal.       25th.   d
XVII Kal.       16th.   e              VII  Kal.       26th.   e
XVI  Kal.       17th.   f              VI   Kal.       27th.   f
XV   Kal.       18th.   g              V    Kal.       28th.   g
XIV  Kal.       19th.   A              IV   Kal.       29th.   A
XIII Kal.       20th.   b              III  Kal.       30th.   b
XII  Kal. V.E.  21st.   c  N.B.        Prid.Kal.       31st.   c
XI   Kal.       22nd.   d              (I Kal. Novemb. 1st.    d)
X    Kal.       23rd.   e              --------------------------
IX   Kal.       24th.   f
VIII Kal.       25th.   g              March, May, July, & October
VII  Kal.       26th.   A              have Nones on the 7th. day.
VI   Kal.       27th.   b              Other months have Nones on
V    Kal.       28th.   c              the 5th. day of the month.
IV   Kal.       29th.   d              All months have the Ides 8
III  Kal.       30th.   e              days after the Nones (i.e.
Prid.Kal.       31st.   f              on the 15th. or the 13th.).
(I Kal. APRILIS 1st.    g)             Prid.=Pridie & means "eve".
-----------------------------------------Simon Cassidy, Dec. 1996.

Rodolphe continued:
> Art. 9: (translation): Thereafter, in order that the equinox shall not in
> the future recede from the XII [before the] calends of April, we prescribe
> that a bissextus shall continue to be intercalated every fourth year (as is
> customary), except for centennial years; which, although they have always
> been leap years in the past, and although we still want the year MDC to be
> one, shall not all be leap years afterwards, but that, out of four hundred
> years, each of the first three centennial years shall be spent without a
> bissextus, but that the fourth centennial year shall be a leap year, in such
> manner that the years MDCC, MDCCC, MDCCCC shall not be leap years. However
> in the year MM, a bissextus shall be intercalated, as is customary, [still a
> February 29th}, and that same order of intervals and intercalations of
> bissextus shall be maintained forever.

I would substitute for "[still a February 29th]" the phrase "February
containing a 29th. day", since 29 February was not called the "bissextus".
--
Dee's Y'rs, Simon Cassidy, 1053 47th.St. Emeryville Ca. 94608. ph.510-547-0684