[bt-devel] thematic BibleTime splash screens

[Gary Holmlund]

On 07/10/2011 02:51 PM, Greg Hellings wrote:
> On Sun, Jul 10, 2011 at 4:34 PM, Jaak Ristioja<jaak at ristioja.ee>  wrote:
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>> I think we should use the Gregorian calendar, because its
>> internationally accepted and and also most used in computer systems. The
>> QDate class and friends in Qt also use the Gregorian calendar in all
>> locales (see
>> http://doc.qt.nokia.com/latest/qdate.html#use-of-gregorian-and-julian-calendars
>> ).
> Sorry, I wasn't talking about Gregorian vs Julian vs other calendars.
> I meant that the day of Easter falls on either of two different dates
> depending on one's tradition. Some Orthodox church still follow the
> Julian rules, others follow a modified version of the Western rules.
> The result is there is not infrequently a discrepancy between when
> Roman Catholic and Protestants are celebrating Easter and when the
> Orthodox churches are celebrating Easter.  A more complete description
> can be found here: http://aa.usno.navy.mil/faq/docs/easter.php along
> with a mathematical formula for the calculation of the Western
> tradition's date.
>
> If we're happy to stick with only the Western date, then I suppose
> that calculation is as good as any. An implementation of the algorithm
> can be used here: http://aa.usno.navy.mil/data/docs/easter.php.  If we
> would at least like to include our Eastern/Orthodox friends in this,
> then someone would need to locate equivalent algorithms for that
> calculation. http://en.wikipedia.org/wiki/Computus#Algorithms has such
> an algorithm under the title "Meeus Julian Algorithm".  It also
> mentions a CPAN module - perhaps there is a similar C or C++ library.
>
> --Greg
I think it is reasonable to use the Easter splash screen for several 
weeks. I suggest we start using it 1 week ahead of the earliest date for 
Easter and end just after the latest date for Easter. The dates could be 
about March 14th to May 10th and cover all western/eastern dates.

Gary