Superstars Rock Concert Series (Westwood One) 1986

[David]

Weedsport NY
Taped for radio broadcast
Broadcast date: September 6, 1986

But which of two performance dates for Weedsport?
June 20, 1986
August 15, 1986 (2nd show?)

And why was a 2nd Weedsport date scheduled so long after the 1st date?

Someone who attended one or both shows, please resolve the mystery. Online lists of tourdates report the same confusion.