OMG, you have Ed White's spacewalk film??
One reason I'll never forget that is that we found out our cat died at the veterinarian that day, while we'd been away sightseeing at the old ghost town of Bodie. My dad's pix of it, later on (film slides, you know!) showed a partial moon in the sky over the buildings. And when we got home, we had the footage of the moonwalk, and the news about our cat passing away.
That's a concatenation of events that sticks in your mind.