Today, Friday, November 13, 2026, many people in the United States are looking at the calendar with apprehension. However, for many Cubans, the date traditionally associated with bad luck is another: Tuesday the 13th.
Why do two neighboring countries have different superstitions about the same number? The answer lies in the cultural traditions that each society has inherited.
While Friday the 13th holds a prominent place in the American imagination, in Cuba and other Spanish-speaking countries, the saying “On Tuesday the 13th, neither get married nor embark, nor stray from your family” is more well-known.
Why does Tuesday the 13th have a bad reputation among Cubans?
The distrust towards Tuesday the 13th is part of a tradition widespread in Spain and many Latin American countries. One popular explanation relates the name of Tuesday to Mars, the Roman god of war. Hence, the symbolic association of the day with conflicts, violence, or misfortunes.
The number 13 adds another piece to superstition. In the Western Christian tradition, it is often linked to the Last Supper, when Jesus shared the table with his twelve apostles, including Judas. However, none of these associations prove that a specific date can bring bad luck.
The well-known saying about not getting married or embarking on voyages on a Tuesday summarizes the warning passed down through generations. For those who grew up hearing it at home, it may feel more familiar than the tales of Friday the 13th popularized by American cinema.
There is also no single, proven historical explanation for how Tuesday became associated with the number 13. These are beliefs that have gained strength over time and continue to endure, primarily through family repetition and popular expressions.
Why is Friday the 13th feared in the United States?
In American culture, Friday the 13th embodies the fear that much of the Hispanic world reserves for Tuesday. Among the traditional explanations is the crucifixion of Jesus, associated with Friday, combined with the already bad reputation that the number 13 carries.
superstition gained visibility thanks to literature and entertainment. The novel Friday, the Thirteenth, by Thomas W. Lawson, was published in February 1907 and used that date as a central element of its plot.
Decades later, the horror film Friday the 13th, directed by Sean S. Cunningham and released in 1980, further popularized this superstition.
For Cubans living in the United States, both traditions can be found in everyday life: the Tuesday the 13th from family proverbs and the Friday the 13th from movies and conversations in English. They are not dangerous dates, but rather examples of how beliefs change depending on the cultural environment.
The National Autonomous University of Mexico reminded this week that there is no evidence that Friday the 13th brings bad luck, nor a single event that explains its origin.
The 2026 had two Tuesdays the 13th, in January and October; and three Fridays the 13th, in February, March, and November. Today's is the last of the year.
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