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 motorcycle rally 90,000 to more than 170,000. An attempt in 2008 to surpass the previous Guinness world record for the largest motorcycle parade failed due to a technicality. More than 10,000 motorcycles would have exceeded the record set in 2006 by the Republic of Texas Biker Rally. Although the organizers were able to document participation by more than 12,000 motorcycles at Port Dover, they entered through multiple portals to the city and were disqualified by Guinness as a single parade. Friday the 13th motorcycle rally The Friday the 13th Motorcycle Rally is a motorcycle rally held every Friday the 13th in Port