No, Pascha does not have to be after Passover (and other Orthodox urban legends)

Right around this time of year, various articles and images begin circulating, giving explanations as to why the Orthodox Pascha (Easter) celebration is usually a week or more after the Western Easter. Most will mention something about the Julian calendar and how its spring equinox is different from the one on the Gregorian calendar. The traditional formula for the date of Pascha (the Paschalion)…