This is a really interesting question. My earliest memory is (what I now realise) the moon landing in 1969. I remember playing outside and being called in to watch the TV and being told we were watching world history. I watched the TV for a while, quite unimpressed and went back outside to play, which was far more interesting. I'd have been almost 5 years old.
I also remember Elvis and John Lennon dying but not JFK.
Aberfan happened on my first birthday, my mum was terribly upset by it and we talked about it when I was older, and a young mother myself.
I'm sure there are more. I'll clear my mind (not too difficult) and see if anything else occurs. 🙄