Origin of Unlucky Thirteen

Fear of the number 13, known as "triskaidekaphobia," has its origins in Norse mythology. In a well-known tale, 12 gods were invited to dine at Valhalla, a magnificent banquet hall in Asgard, the city of the gods. Loki, the god of strife and evil, crashed the party, raising the number of attendees to 13. The other gods tried to kick Loki out, and in the struggle that ensued, Balder, the favorite among them, was killed.


Scandinavian avoidance of 13-member dinner parties, and dislike of the number 13 itself, spread south to the rest of Europe. It was reinforced in the Christian era by the story of the Last Supper, at which Judas, the disciple who betrayed Jesus, was the thirteenth guest at the table. See also LINK

Friday the Thirteenth

Triskaidekaphobia (from Greek tris meaning "3," kai meaning "and," and deka meaning "10") is fear of the number 13.

It is a superstition and related to a specific fear of Friday the 13th, called friggatriskaidekaphobia.  That is the truth!

PS - See October post about Friday.