What are some useful or just cool stuff to memorize?

https://lemmy.ml/post/2114084

What are some useful or just cool stuff to memorize? - Lemmy

I just learned the mind palace technique to memorize stuff and wanna put it to use.

Thirty days has September, April, June, and November.
I always just used the knuckle trick for counting. The ones that have 31 days are at the top of the knuckle and the 30 (or 28/9) day months are in between the knuckles.
This is definitely the way.