The Fall 2012 Rally is scheduled (as 8.1al stated) for September 19 (Wednesday) Through September 26 (Wednesday), 2012. The dates (both scheduled and tentative) for all MOC Rallies can be found here.
http://www.montanaowners.com/forums/...ad.php?t=45039
Additionally, if the dates for the Fall Rally for 2013 are of interest, they will be September 25 (Wednesday) Through October 2 (Wednesday), 2013
http://www.montanaowners.com/forums/...ad.php?t=46413