(USA Today) – Everyone knows Friday the 13th is considered an unlucky day. But why does it have such a bad reputation?
One reason is that both Friday and the number 13 have some troubled ties to Christianity.
It was on a Friday that Jesus was crucified, and ever since, the day has been associated with “general ill omen,” Michael Bailey, a history professor at Iowa State University who specializes in the origins of superstitions, tells USA TODAY Network.
In the Middle Ages, for instance, weddings were not held on Fridays; likewise, it was not a day someone would set out on a journey, Bailey says.