Friday the 13th is a superstition about a day of good or bad luck.
The fear of Friday the 13th is called paraskavedekatriaphobia,[1][citation needed] a word derived from the concatenation of the Greek words Paraskeví (Παρασκευή) (meaning Friday), and dekatreís (δεκατρείς) (meaning thirteen), attached to phobía (φοβία) (meaning fear). The term is a specialized form of triskaidekaphobia, a simple phobia (fear) of the number thirteen. The term triskaidekaphobia was derived in 1911 and first appeared in a mainstream source in 1953.[2]
According to folklorists, there is no written evidence for a "Friday the 13th" superstition before the 19th century.[3][4][5] The earliest known documented reference in English occurs in an 1869 biography of Gioachino Rossini:
(... from Wikipedia on 2009-01-01 02:53:19 )