When I was a pre teen I was spending the night over at one of my good friends of the era. He had a big house that was on some farmland, had a big yard, and in the back had a trampoline.
It was odd because my sister was best friends with the guys sister, and he was one of my best friends so all four of us were always around each other. We used to all jump on the trampoline at the same time because if you timed your landings right with somebody else then the lighter person would go flying way higher on the rebound.
Of course unless you were lucky and just happened to land at exactly the right time as everybody else then a guy never got boosted up, but we still liked flinging our sisters up in the air because they'd giggle and be happy.
After doing that me and the brother laid down on the trampoline and looked straight up because the business of flinging 90 lbs girls up in the air was tiring after a while.
There was a big shiny dot reflecting in the setting sun.
I was nerdy enough to know that only planets reflect sunlight in the day time, unless there is a supernova somewhere that outshines it. There hasn't been a supernova detectable by the naked eye in a while so....
"Hey look at that star." The brother said. It was literally the only thing besides the sun that was shining.
"That's not a star it's a planet. You can tell because it is still daylight and it isn't flickering."
Then the "planet" began to move straight up slowly at first, then shot so fast upward that it seemed to disappear. Like somebody throwing a baseball straight up in the air and then the baseball suddenly reaching escape velocity speeds and then disappearing.
We kind of both were like, "holy shit!" when it first happened but literally have never talked about it since then. But I have talked about it with many other people. That is kinda weird in itself. Not saying it was aliens, I'm just sayin.