In the Western Church, Easter sometimes precedes Passover by weeks.
The Jewish liturgical year is not simply the basis for Jewish holidays, but for the Christian movable feasts as well—those annual holidays that do not fall on a fixed date but vary according to astronomical occurrences.
The celebration of Passover took place just before the Crucifixion and Resurrection of Christ, and the two holidays have been entwined from the beginning—the word Pasch, originally meaning Passover, came to mean Easter as well.
While there has been some discussion of this question, it still has not been given the serious attention that it deserves. While the question of a common date for Easter/Pascha has been addressed at different times since the earliest Christian centuries, a renewed discussion of this issue has arisen in the present century in the churches of both East and West.
It also has emerged in significant ways in the secular world.
Due to this definition, the 15th day of every Hebrew month is a full moon day.
On the Hebrew calendar, the first month of the year is always the month that starts on the new moon that is closest to the beginning of spring, this month is called Nisan.But in 2014, the two celebrations occurred on the same date, April 20.The theological inconsistency of two Easters has remained a thorny problem for the Christian Church. Easter is the most important Christian Holyday, celebrating the resurrection of Jesus Christ.Christian authorities have always wanted to celebrate this on the same day of the year as the true resurrection.See more info on the Hebrew calendar (and there are many other resources on the web).