[dba-SQLServer] Holidays by Nation and State/Province/Canton/etc.

Actually, it's the first Sunday after the first full moon on or after the 
northern hemisphere's vernal equinox.

However, the "full moon" and "vernal equinox" are not the astronomical 
ones, they are simplified ecclesiastical ones.

The standard way to calcuate Easter doesn't  use information about full 
moons or equinoxes at all. It's called "the algorithm of Oudin" and relies 
solely on integer arithmetic on the year number to derive the month and day 
of Easter Sunday.

For all the gory details, see http://aa.usno.navy.mil/faq/docs/easter.html  



On 12 Jan 2007 at 14:05, artful at rogers.com wrote:


> Thanks for that input. But as far as I know the calculation for Easter is
> quite simple. The first Sunday after the first full moon in April.
-- 
Stuart