Recognize word in the title? It is an actual scientific term, meaning, “Fear of Friday the 13th.”
Where did the superstition around Friday the 13th arise? . . . No one knows for sure (of course).
The first documented instances of superstition around Friday the 13th are from the 19th century – which is actually pretty late for such a superstition to arise. I’m inclined to think the horror movies around the theme – and even by that name (“Friday the 13th”) are what gave “heightened awareness” to this superstition.
One notable theory is that superstitions around “Friday the 13th” arose around Christ being crucified on a Friday; and superstitions around the number “13” were derived from Judas Iscariot being the “13th man” at the table at the Last Supper. (12th disciple, but 13th person represented, if you include Christ.) When “13” and “Friday” combine, in this logic, it represents a double omen. . . .