Pick a good/bad one. I left an especially noteworthy one for you guys.
https://en.wikipedia.org/wiki/November_21
1676 – The Danish astronomer Ole Rømer presents the first quantitative measurements of the speed of light.
1964 – Second Vatican Council: The third session of the Roman Catholic Church's ecumenical council closes.
1980 – A deadly fire breaks out at the MGM Grand Hotel in Paradise, Nevada (now Bally's Las Vegas). Eighty-seven people are killed and more than 650 are injured in the worst disaster in Nevada history.
Not the one you had in mind, Mike, but this one was a little personal.
We were on vacation at our time-share and had a view good enough to take some pictures (misplaced). Put a dampener on the city, but things got back to normal pretty quickly.
You had some noteworthy things happen on your vacations.
I remember the story about the future big celebrities that you were entertained by on your honeymoon when you just wandered into a place in the 1950's.