Things Grandma and I saw

In my early childhood, probably late 40's, we didn't have a T.V., so there wasn't much to do after dark, besides go to bed, and wait for sleep. I used to sleep with my Grandma a lot and one summer night, laying in front of the window trying to get a little wisp of cool night air. Grandma was being really quite and she said to me, look in the sky and pointed to where she wanted me to look. There were 3 or 4 tiny little red dots moving around in the sky, like they were playing tag. I ask Grandma, what is that, she said I don't know. She said I see them all the time at night when I can't sleep, I said have you told Mom and Daddy about them? She said no they would just say I was a crazy old woman. I only seen that the one time and I never did mention it to Mom, I don't know why, just didn't.
Planes didn't fly at night where we lived, and not very often during the day. So it rules that out