Friday the 13th one occurrence each. A Friday the 13th occurs during any month that begins on a Sunday. The fear of the number 13 has been given a scientific name: "triskaidekaphobia"; and on analogy to this the fear of Friday the 13th is called "paraskevidekatriaphobia", from the Greek words "Paraskeví" (Παρασκευή, meaning "Friday"), and "dekatreís" (δεκατρείς, meaning "thirteen"). The superstition surrounding this day may have arisen in the Middle Ages, "originating from the story of Jesus' last supper and crucifixion" in which there were 13 individuals present in the Upper Room on the 13th of Nisan Maundy Thursday, the night before his
Friday the 13th (1980 film) at the time, no well-recognized or bankable actors; aside from well-known television and movie actress Betsy Palmer. The film would take in approximately $20 million in international box office receipts. Not factoring in international sales, or the cross-over film with "A Nightmare on Elm Street"'s Freddy Krueger, the original "Friday the 13th" is the highest-grossing film of the film series. To provide context with the box office gross of films in 2014, the cost of making and promoting "Friday the 13th"—which includes the $550,000 budget and the $1 million in advertisement—is approximately $4.5 million. With regard to the US box