A question often arises “Why do different people celebrate Easter (Holy Pascha) on various dates?”
This posting is my own layman’s explanation. Please pardon me if it is not completely accurate.
The Western Christian faithful celebrate Easter on
___The first Sunday
___After the first full moon of the Spring season each year
While Eastern Christian Orthodox Christians celebrate Easter (Holy Pascha) on
__The first Sunday
__After the first full moon of the Spring season each year
__After the Jewish Passover
For Orthodox Christians, we choose to acknowledge that Jesus Christ, our Lord and Savior, was celebrating the Passover meal with His disciples at the Last Supper. His passion, death, and 3rd day Easter resurrection took place after the Passover meal.
Because of the above timing, the calendar for the Western Christian Easter and for the Eastern Christian Easter may occur on the same date in some years, however tend to vary from one to about six weeks apart on other years, depending on when Passover occurs.