There are many superstitions regarding the number 13.
For example, in Britain it’s considered a bad omen for 13 people to sit at a table.
Some say that the person who rises first will meet with misfortune, even death, within a year.
Others say it’s the last person to rise.
Some British people think it’s unlucky to have 13 people in a room, especially for the person closest to the door.
The thirteenth day of the month isn’t considered a good day on which to begin any new enterprise, including marriage, or to set out on a journey.
Many people believe that Friday the thirteenth is the unluckiest day in the year.
This belief is so widespread that there are horror movies called Friday the Thirteenth.