Friday the 13th etc.) of the year. Any month that starts on a Sunday contains a Friday the 13th, and there is at least one Friday the 13th in every calendar year. There can be as many as three Friday the 13ths in a single calendar year; either in February, March and November in a common year starting on Thursday (such as 2009, 2015 or 2026) (D), or January, April and July in a leap year starting on Sunday (such as 2012) (AG). The longest period that occurs without a Friday the 13th is 14 months, either from July to September the following
Friday the 13th (franchise) who had discovered the "Necronomicon". There have been two books released chronicling the making of the "Friday the 13th" films. In February 2005, FAB Press published their book containing interviews with the cast and crew of the "Friday the 13th" series of films. David Grove, a film journalist who has written for "Fangoria", "Cinefantastique", and various other British magazines detailing the creation of the "Friday the 13th" films, wrote the comprehensive book, "Making Friday the 13th: The Legend of Camp Blood". Grove interviewed over 100 "key personnel involved in making the films" to collect "detailed production histories of each of