The day is here, so here's the history, superstitions and more. Why is it so unlucky? Is there a name for fearing Friday 13th?

Some people think the reason why the number 13 is thought to be bad luck comes from the Bible. Judas, the disciple who betrayed Jesus, was the thirteenth guest to sit down to the Last Supper. In Norse mythology, a dinner party of the gods was ruined by the thirteenth guest called Loki, who caused the world to be plunged into darkness.