Formulas exist to calculate what day of the week a certain date falls on. If you are good at mental math, learn one, and you're set. (There was an old judge whom I tried cases before, who believed that he had invented the formula. Anytime during a hearing when someone gave a date, he would immediately interrupt the proceedings with the day of the week--"I direct your attention to August 25, 2017." "That was a THURSDAY!" It was pretty impressive, yet annoying in context. LOL) Fortunately, if you don't want to tax your brain, this little monograph gives you a method where you don't have to do a lot of memory work. Oh, there's some--you'll have to remember a little--but you mostly rely on a crib. It's an excellent method, and you also get a simple, yet devious, way to hide your crib from the audience, as well as a little history and more complicated ways to do this stunt that don't rely on a crib.
If you like the idea of doing this as an example of your superior mental abilities, then his is probably the easiest method that I've seen. I'm fairly decent at mental math, so I had the workings of the method down in about three minutes. It's that easy. For $8, how can you go wrong?
