This is a fascinating article that covers something I've thought about plenty of times! Genuinely how often do people take virtually the same photo at the same time? You'd think it'd be more often at places like Disney World but it's fascinating to hear it happened in a scenario like this.
I met First Wife at a festival. I sent my brother a photo of her from the day I met her. He sent back a near-identical photo of exactly the same woman in exactly the same position from the day before when he had been at the festival himself and took a photo of her lol.
One that I sometimes think about is; how often you end up in other peoples photos? I wish there was an option in e.g. Google Photos where you could share (anonymously?) your photos with people you just happen captured by accident.
We participate in a glo-riders bike ride, so 150-200 bikes/scooters all with various levels of led lights from a strip on your helmet to 500+ synced to a speaker. A bunch of people have Bluetooth speakers playing the playlist of the ride.
It's not super well known, so random pedistrians or people at outdoor tables star and record the parade on their phones, so there's multiple videos of us all around town.