I am American so I watched it from my living room in Texas.
I was 15 and the live feed from the UK began at 10am GMT so it was 3am when I turned the tv and radio on (the concert started at 12pm/5am) and it must have been around 8pm, my time when it was over. I watched every single act.
I hold that day as one of the most special days of my teenage life and as a music fan, it was immense!
When I saw Status Quo as the opener, I groaned but my God, they were perfect! Ultravox played "One Small Day" and I was nearly in tears, it was fantastic! The Style Council was all energy; Spandau Ballet were hamming it up; Sade was effortlessly cool; Paul Young was impressive; U2 blew me away; Bryan Ferry had the most problems on stage but he was suave and sophisticated nonetheless; Bowie started his set with TVC15 and set the tone for fun and ended with a heartfelt performance of Heroes and that sobering footage of the famine; Queen...nuf said; George Michael and Elton and then McCartney.
My favorite band is Simple Minds but they performed at JFK because the Pretenders were performing there (Jim Kerr & Chrissie Hynde were married then). SM completely made me more of a fan!
I loved the acts like Judas Priest, Ozzy Osborne, the Power Station but I laughed when Madonna danced her heart out in the summer heat and exclaimed that she wasn't "taking shit off" because that week the papers discovered she did soft porn in her youth and the photos were everywhere! I was impressed by her performance. That gig was the one where Simon Le Bon cracked his note in View to a Kill and it was a cracked note heard literally around the world. At least he looked good. Lol
I think so many people need to realize that the two simultaneous worldwide concerts were truly a feat of cooperation and huge jumps in technology. They had to have technology that was available only to NASA and the Olympics in 1984. There had to be government organizations (we still had an Iron Curtain, remember?) all over the world trying to make it possible within a six week period. Plus, every single person did this for free!
I think that is why people like myself understand that is was so much more than a gig. All this was done with the intention of helping people in need. We found out later that things didn't quite turn out as we hoped and that things were much more complicated but at its heart, it was good.