My mom and her four siblings grew up in northern Pennsylvania. My uncle married a European woman whom I saw regularly throughout my childhood and grew close to (2000–2011). They lived in Ohio, but divorced in about 2011, and sadly I didn't get to see her at family gatherings anymore, although we exchanged a few texts a year. In May 2015 after I finished my freshman year of college in North Carolina, my dad and I decided to take a trip to the Florida Keys for my first scuba diving trip. We unpacked at the hotel, spent a day exploring the area, and on the second day went to a pretty small, random scuba shop where we had booked our reservation. Who did I see there but my aunt!? This was lovely because I don't know when I would have seen her again otherwise - and we have not met in person since.
I will repeat some of the above details for a second coincidence that happened a year earlier. That same uncle has a friend and 20-year business partner from Australia whose son happened to be going to the same school in North Carolina that I was about to start attending in fall 2014.