Also btw @probot (not sure if I'm pinging right) you really should add the Freddy and Jason novels eventually since they clean up the timeline a bit. church of the divine psychopath is stated to take place by the author between parts 7 and 8 and it's set in spring (since both 7 and 8 are set in summer this mean both are set in separate years. The Jason X Death Moon novel mentions Elias cursed Jason with the Necronomicon Ex-Mortis (the ex-mortis name obviously being the Evil Deads name for the Necronomicon) they also mention there's 666 copies of the Necronomicon which further support the idea of there being multiple. The Mask of Jason Voorhees is only like half official but it does give us hard dates for some movies, 1993 for Jason takes Manhattan and 1995 for Jason 9, the book is set on the 3rd anniversary of Jason 9 so 1998 (the back of the book says 4 years but the actual text says 3.)