So of course all of you know that today is Friday the 13th, but it's also Scrabble Day!


Friday the 13th

According to folklorists, there is no written evidence for a "Friday the 13th" superstition before the 19th century. The earliest known documented is in the 1869 biography of Gioachino Rossini:

Rossini was surrounded to the last by admiring and affectionate friends; Why Friday the 13th Is Unlucky

Consequently, several theories have been proposed about the origin of the Friday the 13th superstition.
One theory states that it is a modern amalgamation of two older superstitions: that thirteen is an unlucky number and that Friday is an unlucky day.

• In numerology, the number twelve is considered the number of completeness, as reflected in the twelve months of the year, twelve hours of the clock, twelve gods of Olympus, twelve tribes of Israel, twelve Apostles of Jesus, the 12 successors of Muhammad in Shia Islam, etc., whereas the number thirteen was considered irregular, transgressing this completeness. There is also a superstition, thought by some to derive from the Last Supper or a Norse myth, that having thirteen people seated at a table will result in the death of one of the diners.
• Friday has been considered an unlucky day at least since the 14th century. Many  professions have regarded Friday as an unlucky day to undertake journeys, begin new projects or deploy releases in production. Black Friday has been associated with stock market crashes and other disasters since the 1800s. It has also been suggested that Friday has been considered an unlucky day because, according to Christian scripture and tradition, Jesus was crucified on a Friday.