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 misforture, even death, within a year. others day it's the last persn 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