the telegraph

Well, the holiday is a moveable feast but it always falls somewhere between March 21 and April 25 every year.

It’s calculated as the first Sunday after the first full moon following the first day of spring. The full moon is known as the Paschal (Passover) Full Moon.

Methods for calculating Easter are fiendishly complicated, in a uniquely baffling synthesis of mathematics, astronomy and theology.

Because Christians believe that Jesus was crucified during the Jewish Passover festival, Easter is marked around that time.