An academic is saying that the date of Easter can become a fixed date according to his calculations:
Christians have marked Jesus' final meal on Maundy Thursday for centuries but thanks to the rediscovery of an ancient Jewish calendar, Professor Colin Humphreys suggests another interpretation.
His findings help explain a puzzling inconsistency between the Gospels of Matthew, Mark and Luke, who said the Last Supper coincided with Passover and John, who said the meal took place before the Jewish holy day commemorating the Exodus from Egypt.
Humphreys' research suggests Jesus, and Matthew, Mark and Luke, were using the Pre-Exilic Calendar, which dated from the time of Moses and counted the first day of the new month from the end of the old lunar cycle, while John was referring to the official Jewish calendar of the day.
With the help of an astronomer, Humphreys reconstructed the Pre-Exilic calendar and placed Passover in the year AD 33, widely accepted as the year of Jesus' crucifixion, on Wednesday April 1.
That means if modern Christians wished to ascribe a date for Easter based on Humphreys' calculations, which he has been mulling over since 1983, Easter Day would fall on the first Sunday in April.