SLIPKNOT: “KnotFest Japan” Announced Posted by tarjavirmakari on March 24, 2014 Posted in: Int. News. Tagged: KnotFest Japan, slipknot. Leave a comment SLIPKNOT have announced KnotFest Japan, the second installment of their self-headlined festival. The event will be held November 15 and 16, with support acts to be announced. Tickets go on sale April 11. Visit knotfestjapan.com for more information.