Today is Friday the 13th this week. For many people, this means an attack of paraskevidekatriaphobia or a fear of Friday the thirteenth. Paraskevidekatriaphobia is derived from the Greek words Paraskeví (Παρασκευή, meaning “Friday”), and dekatreís (δεκατρείς, meaning “thirteen”).
The origins of this fear are are not well known, but several theories exist. One claim is that it originates from the story of Jesus’ last supper and crucifixion in which there were 13 individuals present in the Upper Room on the 13th day of the Jewish month of Nissan, known to Christians as Maundy Thursday, the night before Jesus’ arrest and crucifixion on Good Friday. While there is evidence of both Friday and the number 13 being considered unlucky, there is no record of the two items being referred to as especially unlucky in conjunction before the 19th century.
Other theories abound as well.