Today, in my New Testament class, my Professor was briefly discussing the Diatesseron, with relation to differences in the Resurrection accounts, between the Gospels. At one point, he said that a former student - who is Greek Orthodox - informed him that the Orthodox Church uses the Diatesseron on Pascha Sunday. I had never heard this before. I have done a quick Google search and it turned up nothing. Before I contradict my Professor, via e-mail or some such thing, I thought I should probably see if anyone could confirm this.