The Reserection Of Jesus, page 1

Originally posted by Zabilgy
That's because Jesus and Santa Claus are the same person and when Jesus was reincarnated, he was reincarnated into the Easter Bunny! HIs wife, Mary Magdeline was actually reincarnated into the tooth fairy!

ROTFL! I always wondered myself about this, this is as good an explanation as any, including Constantine's:

When the question relative to the sacred festival of Easter arose, it was universally thought that it would be convenient that all should keep the feast on one day; for what could be more beautiful and more desirable, than to see this festival, through which we receive the hope of immortality, celebrated by all with one accord, and in the same
manner? It was declared to be particularly unworthy for this, the
holiest of all festivals, to follow the custom[the calculation] of the
Jews, who had soiled their hands with the most fearful of crimes, and
whose minds were blinded. In rejecting their custom,(1) we may transmit to our descendants the legitimate mode of celebrating Easter, which we have observed from the time of the Saviour's Passion to the present day[according to the day of the week]. We ought not, therefore, to have anything in common with the Jews, for the Saviour has shown us another way; our worship follows a more legitimate and more convenient course(the order of the days of the week); and consequently, in unanimously adopting this mode, we desire, dearest brethren, to separate ourselves from the detestable company of the Jews, for it is truly shameful for us to hear them boast that without their direction we could not keep this feast. ...

Besides, consider well, that in such an important matter, and on a subject of such great solemnity, there ought not to be any division. Our Saviour has left us only one festal day of our redemption, that is to say, of his holy passion, and he desired[to establish] only one Catholic Church. Think, then, how unseemly it is, that on the same day some should be fasting whilst others are seated at a banquet; and that after Easter, some should be rejoicing at feasts,
whilst others are still observing a strict fast. For this reason, a Divine Providence wills that this custom should be rectified and regulated in a uniform way; and everyone, I hope, will agree upon this point. As, on the one hand, it is our duty not to have anything in common with the murderers of our Lord; and as, on the other, the custom now followed by the Churches of the West, of the South, and of
the North, and by some of those of the East, is the most acceptable, it
has appeared good to all; and I have been guarantee for your consent,
that you would accept it with joy, as it is followed at Rome, in Africa, in all Italy, Egypt, Spain, Gaul, Britain, Libya, in all Achaia, and in the dioceses of Asia, of Pontus, and Cilicia. You should consider not only that the number of churches in these provinces make a majority, but also that it is right to demand what our reason approves, and that we should have nothing in common with the Jews. ...

The exact date Easter was to be celebrated was argued for centuries, not just with Constantine but also in 343 with the Synod of Sardica where the Alexandrians and Romans celevrated same a month apart. Again in 387 where the former date was based on a March 21 equinox, which previously established an 84 year cycle was calculated. In 457, the debate arose again at the end of the cycle which brought the Latin date in line with the Alexandrian when Dionysus offered up a 19 year cycle. Not all diocesae were in agreemnt however, and so the debrate raged until 729 when the 19 year cycle was accepted.