Common year starting on Friday has only one Friday the 13th; The only Friday the 13th in this common year occurs in August. Leap years starting on Thursday share this characteristic, but also have another one in February. This is the only year type where the "n"th "Doomsday" (this year Sunday) is not in ISO week "n"; it is in ISO week "n"-1. In the (currently used) Gregorian calendar, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-three common years per cycle or exactly 10.75% start on a Friday. The 28-year sub-cycle does only span across century
Friday the 13th (franchise) into novels, and his adaptation of the original "Friday the 13th" was published in 1987, with novelizations of "Part 2" and "3" both being published in 1988. Hawke's first adaptation, "Jason Lives", introduced the character of Elias Voorhees, Jason's father, who was supposed to appear in the film before being cut by the studio. The book explains how Elias has Jason's body buried, instead of the planned cremation, after his death in "The Final Chapter". In 1994, four young adult novels were released under the title of "Friday the 13th". These stories focused on different people finding Jason's mask and