The Soundtrack of Your Summer Tour was a tour that was co-headlined by Good Charlotte, and pop-rock band, Boys Like Girls. The Soundtrack of Your Summer Tour included guest bands such as Metro Station and The Maine on selected dates. The tour consisted of 39 dates in the United States and two in Canada. The name of the tour came from a line in the Boys Like Girls song, "Thunder".
Your Summer Tour consisted of 41 dates in the North American region. 
The tour consisted of 39 dates in the United States and two in Canada, so 41 in total in North America. The math may have confused the system 