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Re: Calculate date of Easter or Good Friday

From G <g@nowhere.invalid>
Newsgroups comp.lang.c
Subject Re: Calculate date of Easter or Good Friday
Date 2024-02-26 09:47 +0000
Organization <Not Here, Not Me>
Message-ID <l43510F2qejU1@mid.individual.net> (permalink)
References <urdmac$1d3vr$1@dont-email.me> <urds3c$1e8e4$3@dont-email.me>

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Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
> On Sat, 24 Feb 2024 21:15:56 -0000 (UTC), Mike Sanders wrote:
> 
>> Calculate the date of Easter Sunday or Good Friday:
> 
> Did you know that one of the requirements of the rules was that Easter 
> would never coincide with Passover? Because the sight of Christians 
> celebrating together with Jews was seen as heretical or something ...

I have never heard of this one and I don't think it's true...

Easter is a day while passover last eight days and it happens that one of
those days is the easter sunday as in 2022 when passover started April 15 and
ester was April 17.

The calculation of easter is quite complex and use the "epact" and "golden
number" associated to the year, but the short answer "the first sunday after
the full moon after the spring equinox" usually gives the right answer.
Just remember that it is the "official spring equinox" March 21 and not the
"real" one that can happen on the 19,20(usually, like this year)  
 or 21 and the "official full moon" that can differ one or two days from the
"real". 

For a full discussion see: <https://www.tondering.dk/claus/cal/easter.php>,
part of "The Calendar FAQ".

G

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Thread

Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-24 21:15 +0000
  Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-24 22:54 +0000
    Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-24 23:57 +0100
      Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-24 23:02 +0000
        Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-25 02:00 +0100
          Re: Calculate date of Easter or Good Friday Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-25 02:27 +0000
          Re: Calculate date of Easter or Good Friday Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2024-02-25 16:58 +0000
            Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-25 18:50 +0100
            Re: Calculate date of Easter or Good Friday Dan Purgert <dan@djph.net> - 2024-02-26 12:43 +0000
        Re: Calculate date of Easter or Good Friday Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-24 18:00 -0800
        Re: Calculate date of Easter or Good Friday Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2024-02-26 11:24 -0700
          Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-26 23:20 +0000
            Re: Calculate date of Easter or Good Friday scott@slp53.sl.home (Scott Lurndal) - 2024-02-26 23:31 +0000
              Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-27 12:50 +0100
            Re: Calculate date of Easter or Good Friday James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-27 05:02 -0500
              Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 22:48 +0000
                Re: Calculate date of Easter or Good Friday James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-27 19:06 -0500
                Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-28 00:11 +0000
                Re: Calculate date of Easter or Good Friday James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-27 19:24 -0500
                Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-28 20:47 +0000
                Re: Calculate date of Easter or Good Friday Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2024-02-28 14:06 -0800
                Re: Calculate date of Easter or Good Friday Kaz Kylheku <433-929-6894@kylheku.com> - 2024-02-28 22:20 +0000
                Re: Calculate date of Easter or Good Friday James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-29 13:21 -0500
              Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 22:50 +0000
                Re: Calculate date of Easter or Good Friday James Kuyper <jameskuyper@alumni.caltech.edu> - 2024-02-27 19:41 -0500
                Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-28 13:13 +0100
    Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-25 01:33 +0000
      Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-25 06:20 +0000
    Re: Calculate date of Easter or Good Friday G <g@nowhere.invalid> - 2024-02-26 09:47 +0000
    Re: Calculate date of Easter or Good Friday Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2024-02-26 11:20 -0700
      Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-27 10:08 +0100
        Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-27 13:00 +0100
      Re: Calculate date of Easter or Good Friday Michael S <already5chosen@yahoo.com> - 2024-02-27 13:12 +0200
        Re: Calculate date of Easter or Good Friday Michael S <already5chosen@yahoo.com> - 2024-02-27 14:36 +0200
  Re: Calculate date of Easter or Good Friday Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2024-02-25 17:39 +0000
    Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 03:12 +0000
      Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 05:20 +0100
        Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 14:26 +0000
          Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 16:31 +0100
          [OT] personal things (was Re: Calculate date of Easter or Good Friday) Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 16:43 +0100
        Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 14:32 +0000
          [OT] Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 17:10 +0100
            Re: [OT] Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-26 18:26 +0100
    Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-26 11:45 +0100
      Re: Calculate date of Easter or Good Friday Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-26 13:04 +0000
        Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-26 15:46 +0100
          Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 16:17 +0100
            Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 17:15 +0100
      Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 14:38 +0000
        Re: Calculate date of Easter or Good Friday scott@slp53.sl.home (Scott Lurndal) - 2024-02-26 16:29 +0000
          Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 19:54 +0000
            Re: Calculate date of Easter or Good Friday scott@slp53.sl.home (Scott Lurndal) - 2024-02-26 20:06 +0000
              Re: Calculate date of Easter or Good Friday porkchop@invalid.foo (Mike Sanders) - 2024-02-26 21:18 +0000
              Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 00:59 +0000
        Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-26 18:07 +0100
      Re: Calculate date of Easter or Good Friday Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2024-02-26 16:09 +0100
      Re: Calculate date of Easter or Good Friday Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2024-02-26 17:26 +0000
        Re: Calculate date of Easter or Good Friday David Brown <david.brown@hesbynett.no> - 2024-02-27 10:17 +0100
        Re: Calculate date of Easter or Good Friday Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-03 11:05 -0800
      Re: Calculate date of Easter or Good Friday vallor <vallor@cultnix.org> - 2024-02-27 01:28 +0000
        Re: Calculate date of Easter or Good Friday Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-02-27 02:25 +0000
        Re: Calculate date of Easter or Good Friday Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-03 10:03 -0800
    Re: Calculate date of Easter or Good Friday Ben Bacarisse <ben.usenet@bsb.me.uk> - 2024-02-28 01:54 +0000
      Re: Calculate date of Easter or Good Friday Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-03-03 10:23 -0800

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