When he was in Cambridge, where I am based, it was common to see him around. Not long ago I was at a conference on the rise of fundamentalisms, and he was 5m from me. I found it incredibly inspiring that he'd be there, obviously engaged and interested, despite his physical condition.
We've made a map of the stars commemorating him, in case anyone is interested. The high-res download is here:
https://greaterskies.com/stephen-hawking-star-map/