LogFAQs > #979638653

Let's see what wikipedia says
https://en.m.wikipedia.org/wiki/Date_of_Easter

"The complexity of the algorithm arises because of the desire to associate the date of Easter with the date of the Jewish feast of Passover which, Christians believe, is when Jesus was crucified.[5]
....
It was originally feasible for the entire Christian Church to receive the date of Easter each year through an annual announcement by the pope.
By the early third century, however, communications in the Roman Empire had deteriorated to the point that the church put great value in a system that would allow the clergy to determine the date for themselves, independently yet consistently.
6] Additionally, the church wished to eliminate dependencies on the Hebrew calendar, by deriving the date for Easter directly from the March equinox."