Friday the 13th

Since I have an affinity for the Viking, Pagan and other belief systems that were persecuted, tarnished and in some cases destroyed via the agents of oppressive and hateful dogma over the years, I tend to favor this theory on Friday the 13th.  Quoted from: http://en.wikipedia.org/wiki/Friday_the_13th

"One theory by author Charles Panati, one of the leading authorities on the subject of "Origins" maintains that the superstition can be traced back to ancient myth:

The actual origin of the superstition, though, appears also to be a tale in Norse mythology. Friday is named for Frigga, the free-spirited goddess of love and fertility. When Norse and Germanic tribes converted to Christianity, Frigga was banished in shame to a mountaintop and labeled a witch. It was believed that every Friday, the spiteful goddess convened a meeting with eleven other witches, plus the devil - a gathering of thirteen - and plotted ill turns of fate for the coming week. For many centuries in Scandinavia, Friday was known as "Witches' Sabbath." --{ Charles Panati, Panati's Extraordinary Origins of Everyday Things, 1987, p. 13. "
 
"Another theory about the origin of the superstition traces the event to the arrest of the legendary Knights Templar."