I don't know that my kids remember. They were 5 & 7 which was a bit young. They knew something was going on that day because every older person was watching TV and discussing what was happening and checking on far flung family and friends to make sure everyone was safe. I heard something on the radio and quickly turned on the TV and then woke my husband to let him know. I wasn't old enough for JFK or MLK but anyone I know who was old enough, remembers where they were for those. With the moon landing most remember who they were watching with and who got their first TV for the occassion. A couple months later we were flying into LAX and it was the first time I saw armed gunman around an airport which was quite freaky and a good excuse not to travel to the US again for quite a few years. My point is that large events, with worldwide exposure and impact, usually are remembered quite well.