Friday the 13th is a day that many people don’t want to see a black cat or break a mirror.
It is not clear when the date became associated with bad luck, but studies show more than 20 million Americans have some sort of fear about it.
According to legend, you should never change your bed sheets on Friday the 13th or you will have bad dreams.
If you have 13 letters in your name, like Jack the Ripper, you have what is called “devil’s luck,” according to legend.
And some people are so afraid of the date they refuse to go to work on Friday the 13th.