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- Newsgroups: comp.std.c
- Path: uu4news.netcom.com!lavc!lavc!mlf
- From: mlf@support.com
- Subject: HOW TO CALCULATE THE
- Message-ID: <9601260108.01LNF04@support.com>
- References: <4e88us$o82@scotsman.ed.ac.uk>
- Organization: L.A. Valley College Public BBS (818)985-7150
- X-Mailer: TBBS/PIMP v3.35
- Distribution: world
- Date: Fri, 26 Jan 96 01:08:23 -0800
-
-
- -=> News wrote on 01-25-96 15:56 the following:
-
- Ne> Newsgroups: comp.std.c
- Ne> From: juggler@iquest.net (Phil Paxton)
- Ne> Subject: Re: How to calculate the Holy Easter.
- Ne> Organization: IQuest Internet, Inc.
- Ne> Date: Thu, 25 Jan 1996 02:19:33 GMT
-
- Ne> chierici@cs.unibo.it (Andrea Chierici) writes:
-
- >Hi, can anybody send me a C function to calculate the Easter of every year?
- >Thanks in advance,
- > Andrea.
-
- Ne> This was floating about the 'net:
-
- Ne> Path:
- Ne> dorite!news.sprintlink.net!gatech!news.mathworks.com!news.kei.com!simte
- Ne> l!zippo. uwasa.fi!poiju.uwasa.fi!not-for-mail
- Ne> From: A.Timmerman@beta.hsholland.nl (Abe Timmerman)
- Ne> Newsgroups: comp.lang.pascal
- Ne> Subject: Easter-date
- Ne> Date: 24 May 1995 12:29:11 -0000
- Ne> Organization: Hogeschool Holland Sector Beta
- Ne> Lines: 47
- Ne> Sender: ts@poiju.uwasa.fi
- Ne> Approved: news@poiju.uwasa.fi
- Ne> Message-ID: <ts9505241228.4174@poiju.uwasa.fi>
- Ne> NNTP-Posting-Host: poiju.uwasa.fi
- Ne> Summary: Reposted by Timo Salmi
-
- Ne> I saw the message about the easter-date program and knew I had an
- Ne> algorithm somewhere.
-
- Ne> This is the algorithm Gauss published in 1800 to calculate
- Ne> Easter-date. The notes in my textbook stated that the earliest date for
- Ne> Easter is March 22, and
- Ne> the latest date is April 25.
-
- Ne> Here's a pascal procedure for the Gauss-Easter algorithm:
- Ne> ------------------------------------------------------------
- Ne> procedure Easter(var Month, Day: Integer; Year: Integer);
- Ne> { Based on the formulas/algorithm published bij Gauss in 1800 }
- Ne> var a, b, c, d, e, f, k, m, n, p, q: Integer;
- Ne> begin
- Ne> a := Year mod 19;
- Ne> b := Year mod 4;
- Ne> c := Year mod 7;
- Ne> k := Year div 100;
- Ne> p := k div 3;
- Ne> q := k - k div 4;
- Ne> m := (q - p + 15) mod 30;
- Ne> n := (q + 4) mod 7;
- Ne> d := (19*a + m) mod 30;
- Ne> e := (2*b + 4*c + 6*d + n) mod 7;
- Ne> f := d + e - 9;
- Ne> if f <= 0 then
- Ne> begin
- Ne> Month := 3;
- Ne> Day := 31 + f;
- Ne> end
- Ne> else
- Ne> begin
- Ne> Month := 4;
- Ne> if f = 26 then Day := 19
- Ne> else if (f = 25) and (d = 28) then Day := 18
- Ne> else Day := f;
- Ne> end;{ else }
- Ne> end;{ Easter }
-
- Ne> Greetings,
-
- Ne> Abe Timmerman
- Ne> Hogeschool Holland
- Ne> (HHIT: Center for education and Information Technology)
- Ne> The Netherlands
- Ne> Email:A.Timmerman@Beta.hsholland.nl
-
- Ne> (And remeber...)
-
-
- Ne> --
- Ne> ------------------------------------
- Ne> Phil Paxton :: Fishers, Indiana, USA
-
-
- Er, ah, could somebody translate this to C???
-
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