Friday the 13th is an unlucky day. Some believe this superstition comes from the Last Supper when there were 13 people present the day before Jesus's crucifixion on Good Friday. Others think it stems from the 14th century when hundreds of the Knights Templar were arrested in France on Friday 13th. It is now a firmly embedded superstition and even has its own phobia name - paraskavedekatriaphobia. In fact, flights are much cheaper on Friday 13th because people don't want to fly on the unluckiest day of the year and it's cheaper to get married too! While in France, the French hope to get lucky with the traditional Friday 13th lottery draw.