The most famous is probably friday the thirteenth, but setting that aside, what other days in general (regardless of specific date) do you hold some superstitions about?
I never had a thing about Friday the 13th until I broke my ankle off on Friday the 13th in 2018. Not that I’m superstitious, it just got stuck in there and now I get a little heebie jeebie thinking about it cause I’m scared it will happen to my right ankle next.