INDEED. Very common.
I’m 62 and still have crystal clear memories from each of my first 3 years. That’s not very common.
At 60, I have isolated memories from as far back as when I was 2 years old. My wife and I are good friends with a lady of 93 whose memory is fine, and easily goes back to her youth. So unless the fellow is senile, which is not at all a given, his memories of the event ought to be OK.