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 aroom, especially for the person closest to the door. The thirteenth they of the month isn't considered a good day on which to begin any new enterprise, including marriage, or to set out a journey. Many people believed that friday the thirteenth is the unluckiest day in the year. This belief is so widespread that there are horror movies clled Friday the Thirteenth.