Somebody was saying that today is Prime Day, and recommending that people should celebrate Anti-Prime Day instead.
First thought: Huh? Today isn’t Prime Day. There aren’t any Prime Days this year. The last Prime Day was 11/29/23. Today would be a generic Anti-Prime Day, but not the best. The best recent Anti-Prime Day was 9/16/25. Perfect squares, forming the classic right triangle.
Fortunately I didn’t write any of this as a comment. After reading more, I dimly gathered that Prime Day has something to do with Amazon. I haven’t bought from Amazon since the Prime Year of 2011, so its sacred holidays aren’t in my calendar.
Polistra's Mill 