A group of Christians coming from different backgrounds, confessions, Churches and denominations are pushing for one date for Easter. The people behind OneDate.org are aiming for something small but hardly significant, so that all Christians may at least give common witness to the resurrection of Christ. The website offers some thoughtful insights as well as the historical background concerning the different dates used by the Church in the East and in the West. Well worth a look.
On the other hand, what divides us can bring one to tears, particularly in light of how petty it all looks when you consider the gravity of division's affront to the Lord's will, and when you think about how small those nitpicks look when compared against the mountain of common Christian witness. Not to say that those differences should be swept under the rug; this cannot be done because we serve the Lord who is Truth, and cannot thereby lie about the differences. But neither is it proper to treat other sincere Christians as enemies. There is only one real Enemy here, and, boy, is he pleased with the fruits of division: pride, paranoia, pharisaic tendencies, enmity, rudeness, polemics, hatred, in-fighting, contrariness -- all of which pervert the Church that Christ built.