I think both the Catholics and Orthodox should celebrate Easter on the Sunday after Passover, and use the Jewish method of figuring when Passover is. That’s when it should be anyway, and it would make both the Catholics and Orthodox change some.
It may surprise you, Hilda, but the Council of Nicaea (A.D. 325) set the date of Easter as the Sunday following the paschal full moon, which is the full moon that falls on or after the vernal (spring) equinox. The paschal full moon? Because that was the date of Passover in the Jewish calendar, and the Last Supper (Holy Thursday) occurred on the Passover. Therefore, Easter was the Sunday after Passover. The Orthodox Church follows a solar calendar. Once in a blue moon (or is that a yellow sun) the two coincide. This year, for the first time ever, the Catholic and Orthodox Churches in the Middle East have agreed to celebrate Easter on the same day.