I had a strange timeslip like experience last summer. It was the end of June, and we were at a large holiday park in Devon (we live in Scotland so schools had broken up for the summer hols). Obviously the park wasn't super busy as English schools still in at this point.
Anyway, we were staying in our touring caravan in the fully serviced section of the park. This consisted of large, hard standing pitches separated by low hedges, for caravans, camper vans, motorhomes and large tents. So, just setting the scene.
On the day we arrived, we could see across from our living area window, a pitch on which there was a large, 6-8 man blue tent with a light grey transit type van parked next to it.
The following morning, I had risen late. I was still recovering from a neck and shoulder injury, so this holiday was going to be a quiet one for me. It was around 11 am, I'd opened the blinds and was having a cup of tea, looking out of the window, and blue tent with grey van had gone. I thought nothing of it; departure time was 10 am, so I just assumed it was the end of their stay, so they'd left.
I should point out now, that at this time, the entire section of pitches that I could see from this window, was now unoccupied. So it wasn't like there were other blue tents/grey vans still pitched in the section, that I might have mistaken one for another.
I then went to get my shower, in the van. The shower bathroom area is in the middle, with no side windows, just two skylights. I showered and dressed in this area, I took around 15 to 20 minutes.
I went back into the living area, looked out of the window, and the blue tent and grey van were back, in the same place. They actually left for good the next morning. I really don't know what happened; it was very strange.