Friday the 13th

Roots in myth and faith

The ominous reputation of the number thirteen has deep narrative roots. In Norse mythology, twelve gods gathered for a feast in Valhalla before the uninvited trickster Loki entered as the thirteenth guest. His manipulation led the blind god Höðr to slay Balder with mistletoe, bringing immense grief. In Christian tradition, thirteen people sat at the Last Supper on Maundy Thursday, immediately preceding the crucifixion of Jesus on Good Friday. While both the day and the number carried negative associations independently for centuries, their explicit pairing as a single unlucky occasion is not documented before the nineteenth century.

Nineteenth century origins

Early records combining Friday and the number thirteen appeared in nineteenth-century culture. A French theatrical play from 1834 featured a character lamenting a birth on Friday the 13th as the source of personal misery. Later, in 1868, the composer Gioachino Rossini died on a Friday the 13th, noted by his biographer because Rossini considered both elements unlucky. Popular fiction also broadened awareness. In 1907, author T. W. Lawson published the novel Friday, the Thirteenth, which depicted a financier using the date's reputation to trigger a panic on Wall Street. Folk lore sometimes cites the 1307 arrest of the Knights Templar in France, though historians consider early origins obscure.

Calendar cycles and occurrence

Under the Gregorian calendar, a Friday the 13th takes place whenever the first day of a month is a Sunday. Every solar year includes at least one such Friday, with a maximum of three in a single year. Because the Gregorian 400-year cycle follows regular mathematical shifts, the 13th day lands on a Friday slightly more often than on any other weekday. The time between occurrences ranges from a single month to as long as fourteen months. On average across centuries, this calendar alignment repeats roughly every 212 days.

Modern observances and reactions

Responses to the date vary from intense apprehension to organized community events. A fear known as paraskavedekatriaphobia causes some individuals to cancel appointments or postpone travel, though airline records show steady passenger numbers. In the Netherlands, insurance data recorded slightly fewer road mishaps on these dates because drivers exercised extra caution. In Finland, social and health groups have used the day since 1995 for National Accident Day to promote road safety. Meanwhile, tattoo studios often host 24-hour flash events, offering designs with the number thirteen based on the idea that displaying the number repels misfortune.

How Friday the 13th is kept

Reactions on Friday the 13th take several forms. People who observe the superstition often stay home, delay major financial decisions, or avoid scheduling flights and surgery. In contrast, tattoo artists celebrate the date by holding day-and-night events, applying discounted flash tattoos featuring the number thirteen to serve as protective charms against bad luck. In Finland, public health bodies and the Red Cross coordinate an annual safety campaign called National Accident Day.

When and where

The date occurs whenever the first day of a month falls on a Sunday in the Gregorian calendar. It happens at least once and up to three times within every calendar year, with gaps between occurrences spanning from one to fourteen months.

The superstition is recognized primarily across Western nations, including the United States, France, and the Netherlands. While related dates exist in other regions, such as Tuesday the 13th in Greece and Hispanic countries, Friday the 13th remains specific to Western folklore.

What Friday the 13th means

In popular belief, the day represents an alignment of misfortune drawn from ancient stories of betrayal, mourning, and uninvited disruption. For some modern subcultures, such as tattoo enthusiasts, displaying the number thirteen transforms the symbol into a counter-charm, believing an existing badge of bad luck will cause further misfortune to pass by.

Questions people ask about Friday the 13th

See also

Jack-o'-lanternA carved pumpkin lantern lit with a candle to brighten and protect Halloween nightsEvil eyeA belief in harm cast by envious glares, met with protective charms and spoken blessingsCandlemasA Christian feast of candle blessings marking the end of the Christmas seasonTraditional tattooingThe ancient custom of marking the skin for protection, healing, status and sacred rites

Good reading and sources

• Friday the 13th Superstitions Rooted in Bible and MoreNational Geographic, Article
• Who’s Afraid of Friday the Thirteenth?Library of Congress, Article
• Friday the 13th - Origins, History & SuperstitionHistory.com, Article
• Friday the 13th Superstitions Rooted in Bible and MoreNational Geographic, Article
• Who’s Afraid of Friday the Thirteenth?Library of Congress, Article
• Friday the 13th - Origins, History & SuperstitionHistory.com, Article

• Friday the 13th on WikipediaEncyclopedia
• More photos on Wikimedia CommonsPhotos and video
• Wikidata recordOpen data

It may contain mistakes. Traditions differ from one family, village and community to the next, and the people who keep them know them best. If something is wrong, tell us. Last refreshed 2026-10-05.