For those here who are Orthodox Christians or interested in Orthodox Christianity - Christ is Risen!
In Orthodox Christianity, this is the greatest Holiday, greater and more important than even Christmas. Everyone have a birthday, and everyone will meet Death, but it was Christ who defeated Death and show that it is not the end. That's what we celebrate today.
PS: And also, by occasion, we here in Russia celebrate first man in space too. Gagarin was not religious, at least openly, but he was baptised in Orthodox Christianity in childhood and grew in faithful and traditional peasants family.
Also, fren, the resurrection must be on Sunday because the Firstfruits always was raised on Sunday, Lev. 23:11. Many of my Hebrew-roots frens have forgotten that Moses authorized this specific Sunday observance, plus Pentecost.
Now, analytically, the Gregorian calendar keeps better pace with the equinox than either the Julian or the Hillel. As a Quartodeciman, I've come around to the idea of celebrating as early as possible, which would also favor the Gregorian. But I'm totally in empathy with the fact that Gregory declined to ask the Orthodox and that there are bigger issues that preclude the table being opened for this discussion. And I don't mind multiple celebrations too much because we gather all the more as we see the Day approaching.
Anyway, have a blessed Resurrection Week, and you're encouraged to post on c/orthodox anytime.