Why is Friday the 13th believed to be unlucky?

Hailey Heseltine news@greenepublishing.com If you go anywhere around the world, you will find superstitious traditions. Some say that you should knock on wood or throw salt over your shoulder for good luck, or that a broken mirror means seven years of bad luck. Superstition also goes beyond actions. There are even believed to be unlucky numbers, which translate to unlucky times and dates. For instance, in some East Asian countries, the number four is considered to be unlucky due to its sim