Strange you should mention this; Polycarp, Bishop of Smyrna himself did not honor your Sunday observance and kept the Passover on the 14th of Nisan/Abib as was the custom of the Apostle John. Polycarp was a disciple of John who not only sat at the feet of Jesus....but reclined on his breast, John 21:20 at the Last Supper. It is interesting that John was given the responsibility for the care of Mary and also the last Apostle to die. He taught Polycarp and others the correct ways of the Lord and not the strange customs, myths and traditions your organization eventually came up with.
It is very telling that John still celebrated the Passover on the 14th, which floated....different days year to year, instead of the "Resurrection Sunday" your organization came up with.
Not "MY" organization...THE CHURCH. In the Orthodox Church, we celebrate Easter or Pascha according to the Julian Calendar, subject to the day passover falls on.