I was in high school in Georgetown, Washington DC. (At the beginning of Georgetown’s gentrification because of the Kennedy home). Back then we only got Thanksgiving Thursday off. It was a chilly gray overcast day the Friday we returned to classes. Principal let us out at 10 or so. A group of guys, about a dozen went down to the field by the reservoir to play touch football. A car full of classmates drove up honking their horn to tell us the radio news of the JFK shooting in Dallas. We all gathered around the car to hear more. I recall the two Hungarian refugees of their revolution silently turned to look at one another without a word. In that instant I knew were all thinking the same thing, Russians did it.
November 22, 1963 was also the day that Walt Disney selected the site for the future Disneyworld in Orlando, FL while flying over Florida in a plane. That was also the day that The Beatles released "With The Beatles" in England. It would still be a couple months before they started gaining traction in America.
The opening credits for "Gilligan's Island" was filmed shortly after the assassination. If you look carefully, you will see one of the flags in the harbor flying half mast.