By Richard Winger On June 26, the Republican Party announced that its national convention in 2016 will be in either Dallas or Cleveland. Because Kansas City has been eliminated, this means that the convention will start on July 18. Kansas City had been the only possible site that could host the alternate June 2016 date.
Source: http://www.ballot-access.org/2014/06/republican-national-convention-will-start-on-july-18-2016/