No, not the movie.
The day.
Like today.
According to my go to first check (and, no, not my last stop when I want to be sure…), Wikipedia, most scholars say this is a superstition of relatively recent origin, like the nineteenth century. While some like to find origins in the Middle Ages apparently there’s little to support this assertion. It doesn’t get big ’till the twentieth century…
On the other hand various cultures have their bad luck days, too. In both Spanish speaking and Greek cultures, there’s Tuesday the 13th, and in Italian popular culture, Friday the 17th.
So, maybe its just in the air…
Whatever, here we are.
Good luck…