About the festival gig in Denmark on 12 August in 1984. I

It's actually a Swedish poster, and The Clash didn't perform. The name "The Clash" is on there just to draw attention to the other bands, it says.

"THE CLASH... Are unfortunately not playing, although these bands are.."
So it was not a date in Scandinavia at that time. Hope I've been to some kind of help.

By the way, Great site! Very interesting. Julius Andersson , Sweden.