Why The Superstition?
Paraskevidekatriaphobia - the fear of Friday the 13th - still grips millions of people worldwide, apparently. Hotels skip the 13th floor... Airlines avoid row 13... An estimated $800-900 million is lost in business each Friday the 13th as people refuse to travel, make major purchases, or even leave their homes.
But where does this dread come from? The answer lies in centuries of betrayal, religious persecution, and cultural superstition - a dark tapestry woven from biblical tragedy, medieval massacre and ancient numerology.
The Last Supper: Thirteen at the Table
Christian tradition holds that thirteen people sat at the Last Supper - Jesus and his twelve apostles. Judas Iscariot, the thirteenth guest, betrayed Christ, leading to the crucifixion on a Friday. This convergence of the number thirteen and the day Friday became forever linked with treachery and death.
The superstition spread through medieval Europe: having thirteen guests at a table meant one would die within the year. Norse mythology echoed this fear - when Loki, the trickster god, arrived uninvited as the thirteenth guest at a feast in Valhalla, he orchestrated the death of Balder the Beautiful, plunging the world into darkness.
Friday the 13th, 1307: The Templars' Fall
The most infamous Friday the 13th in history occurred on October 13, 1307, when King Philip IV of France orchestrated a coordinated dawn raid across the country. Hundreds of Knights Templar (warrior monks who had become wealthy and powerful) were arrested simultaneously on charges of heresy, devil worship and obscene rituals.
The arrests were brutal. Templars were tortured into false confessions using methods like the strappado (hanging by bound wrists twisted behind the back) and foot roasting. Many died under torture. Others were burned at the stake, including Grand Master Jacques de Molay, who allegedly cursed King Philip and Pope Clement V from the flames - both died within the year.
While historians debate whether this event alone created the Friday the 13th superstition (some argue it was already established), the Templars' fall certainly cemented the date's dark reputation. The phrase "unlucky Friday the 13th" didn't appear in print until the 19th century, but the cultural memory of betrayal and persecution lingered.
The Number Thirteen: Cursed by Design
Thirteen has been considered unlucky across cultures for millennia:
- Ancient Babylon: The Code of Hammurabi (circa 1750 BC) omits a 13th law in its list
- Tarot: The 13th card in the Major Arcana is Death (though it symbolizes transformation, not literal death)
- Witchcraft: A coven traditionally consists of 13 members - 12 witches and one high priest or priestess in Wiccan tradition.
- Architecture: Many buildings skip the 13th floor, jumping from 12 to 14 (though the floor still exists, just renumbered)
Mathematically, thirteen is a prime number that follows twelve, a number of completeness (12 months, 12 zodiac signs, 12 apostles, 12 hours). Thirteen disrupts that harmony, representing chaos and imbalance.
Friday: The Day of Execution and Misfortune
Even without the number thirteen, Friday carried its own dark associations:
- The Crucifixion: Christ was crucified on a Friday (Good Friday)
- Execution day: In medieval Britain, Friday was the traditional day for public hangings
- Sailors' superstition: Never begin a voyage on a Friday - it was believed to bring disaster at sea
- Adam and Eve: According to some Christian traditions, Eve offered Adam the forbidden fruit on a Friday
The British Navy, determined to debunk the superstition, commissioned HMS Friday in the 1800s. The keel was laid on a Friday, she was launched on a Friday, and her first voyage began on a Friday the 13th, commanded by a Captain James Friday. The ship was never seen again.
Modern Manifestations: Pop Culture Amplifies the Fear
The 1980 slasher film Friday the 13th transformed the date from a quaint superstition into a cultural phenomenon. The franchise spawned twelve films, cementing the association between the date and horror, violence, and the unstoppable killer Jason Voorhees.
Studies have shown mixed results on whether Friday the 13th is actually more dangerous:
- A 1993 British Medical Journal study found a significant increase in traffic accidents on Friday the 13th
- A 2008 Dutch study found fewer accidents, theorizing that people drive more cautiously due to superstition
- Insurance companies report no statistical increase in claims on Friday the 13th
The fear itself may be the only real danger - a self-fulfilling prophecy where anxiety causes the very misfortune we dread.
How Often Does Friday the 13th Occur?
Every year has at least one Friday the 13th, and at most three. The longest period between two Friday the 13ths is fourteen months. Curiously, any month that begins on a Sunday will contain a Friday the 13th. So know you know what to look out for!