About 10 years after leaving uni in Edinburgh, i got invited to an engagement do for a friend from Uni, who i hadn’t seen for a few years. Walked into their flat to be met by one of my best mates from school (from yorkshire, with no known connection to Scotland) who i’d lost contact with who was now my friends fiancé.
Another one, where we were driving through a very remote northern Norway fiord, and saw a vehicle. So as it had UK plates we approached for a chat. Turns out that they were in the same mountaineering club as my brother in Aberdeen.
And the last one, when doing the Pedal for Scotland with my daughter, i took a selfie a the start of her and me. After putting it up on FB later that day it turns out that one of my mountain bike mates from our meet up/fb group was stood next to us and smiled at the camera as i did a the selfie, neither of us had noticed a the time as we weren’t in mtb kit.