I have found it interesting that Christmas is always December 25, but Easter is always Sunday but a very moveable date in March or April with long calculations to get it to match Passover.
I believe Easter is the first Sunday after the first full moon after March 21.
Yes, exactly. The ominous “Bible prophecy right on schedule” is not part of the original title of the article and was added by the poster as his opinion (apparently without reading or understanding the article). The article is not talking at all about the Church moving Christmas to a Sunday; the author is bemoaning the the fact that some dioceses are doing this with other holy days of obligation or abrogating them altogether for convenience. In effect he’s saying, “What next? Christmas?” I share his frustration.