When I thought of all the anniversaries falling between meeting my wife and actually marrying my wife, with a view to stretching the season of commemorations surrounding my “Twenty-Five Years an Expat” extravaganza, I had not anticipated mentioning this one. But here we are, and the day, on its twenty-fifth occasion, merits remembering.

It’s one of those world-shaking events, where everyone can remember where they were when they heard. It’s like remembering where you were when JFK...