Happy Friday the thirteenth. In Goddesscentered cultures, thirteen was the number of the Love-goddess, and Friday was her day. It is still regarded in Latin languages
(Spanish, Italian, French) as the "day of Venus.":) In Spanish, the day is called viernes, and in Italian, venerdi.
So, to counter it as a day of Love and celebration, the orthodox Church, which disliked almost everybody, declared the day "unlucky," based upon a superstition that if it was "lucky" for Goddess-people, who "worshipped Satan," it must be "unlucky" for "good people" (Christians, who "alone" worshipped God). So, the "unluckiness" of Friday the thirteenth was a product of bigotry.