We've all heard the moans and groans:"Why can't they fix the date of Easter, as they do Christmas?" Well they did - a very long time ago! Unfortunately it's yet another calendar problem! (Remember Christmas?)
Christianity is tied to the Solar Calendar. What we call the Paschal Season is tied to the Judaic "Passover" (Pesach) which, in turn, is tied to the Lunar Calendar.
So we need two small pieces of information, which will unite the two:
1) The date of the Spring Equinox - which is always March 21st and is immoveable so far as we are concerned.
2) The date of the first Full Moon after the Equinox. If the two coincide it does not count...use the next!
The Sunday after that Full Moon is Easter day. Sunset on the previous Friday marks the beginning of Pesach, and is God Friday (Good Friday
- the two words were the same in Saxon.)
In 1928, the UK Parliament passed a Bill to fix the date:- for obvious reasons it has never been implemented!
Of course, if you go shopping there are many signs of its coming....The bunnies are largely of Scandinavian origin. Ah well....