If you're in North America visit
www.creationent.com They will have a list of all the SPN conventions in North America (because they have the J's exclusively, nobody else tries to run cons) if you're overseas...you'd have to google, but there is the Asylum cons (out of the England area (I think)). Jus in Bello Cons in Italy and the All Hell Breaks Loose Cons in Australia. I believe both J's are scheduled for Asylum and JIB...not sure about AHBL.