Ciekawostka: Paraskevidekatriaphobia means fear of Friday the 13th, which occurs one to three times a year

Evidence: 69 • authority: 72

Friday the 13th is considered an unlucky day in Western superstition. It occurs when the 13th day of the month in the Gregorian calendar falls on a Friday, which happens at least once every year but can occur up to three times in the same year. For the 13th to fall on Friday, a month's first day must be a Sunday.

Evidence: 49 • authority: 72

A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year. The 366th day (or 13th month) is added to keep the calendar year synchronised with the astronomical year or seasonal year. Since astronomical events and seasons do not repeat in a whole number of days, calendars that have a constant number of days each year will unavoidably drift over time with respect to the seasons. By inserting an additional day—a leap day—or an additional month—a leap month—into some years but not others, the drift between a civilisation's dating system and the physical propert…

Evidence: 49 • authority: 80

Fear of Friday the 13th–Self-Fulfilling Prophesy?

Evidence: 49 • authority: 72

Adrienne King (born July 21, c. 1955–1956) is an American actress, visual artist, and winemaker. She is known for her portrayal of Alice Hardy in the slasher film Friday the 13th (1980) and its sequel, Friday the 13th Part 2 (1981). Born and raised in Oyster Bay, New York, King was placed in commercials by her mother beginning at six months old, and worked as a child actor in her early years. She made her film debut in the television film Inherit the Wind (1965), followed by uncredited appearances in Between the Lines (1977), Saturday Night Fever (1977), and Hair (1979). After starring in Friday the 13th and Friday the 13th Part 2, King retreated from acting when she became the target of a…

Evidence: 49 • authority: 72

Friday the 13th is a 1980 American slasher film produced and directed by Sean S. Cunningham, written by Victor Miller, and starring Betsy Palmer, Adrienne King, Harry Crosby, Laurie Bartram, Mark Nelson, Jeannine Taylor, Robbi Morgan, and Kevin Bacon. The plot follows a group of teenage camp counselors who are murdered one by one by an unknown killer while they are attempting to reopen an abandoned summer camp with a tragic past. Prompted by the success of John Carpenter's Halloween (1978), Cunningham put out an advertisement to sell the film in Variety in early 1979, while Miller was still drafting the screenplay. After casting the film in New York City, filming took place in New Jersey in…

Evidence: — • authority: 35