How has the Latin Church deviated from those prescriptions?
He refers to the fact that the Gregorian Paschalion takes no note of when the Jewish Passover falls so Gregorian Pascha may come at the same time as Jewish Passover. However, I noted that this year we both celebrated Pascha on the same Sunday, April 4, and Passover was March 30 to April 5 so we both violated Nicea and will do so again next year and in 2014 and 2017. Of course the violation depends on how one interprets "not with the Jews". Scholars contest whether this meant simply ignore the Jewish calculation or delay Pascha until Passover is over. Archbishop Peter of blessed memomry presents this arguement in favor of the "ignore" side.
My thought is that it is intended to align Pascha with the celebration in Christ's time: that Pascha should not fall before the time of the sacrifice. In that way, and using the other writings, it seems to me
to be a mix of the two positions - ignore the Jewish calculations, because at the time they would vary from province to province, and sometimes would fall before the Equinox, and at the same time not have Pascha come before the 1st day of the Passover (by our calculations, not theirs) so that we wouldn't make a mockery of the biblical timeline.
"O Cross of Christ, all-holy, thrice-blessed, and life-giving, instrument of the mystical rites of Zion, the holy Altar for the service of our Great Archpriest, the blessing - the weapon - the strength of priests, our pride, our consolation, the light in our hearts, our mind, and our steps"
Met. Meletios of Nikopolis & Preveza, from his ordination.