Based on where I lived at the time, I was 7-9 years old and had no idea this was any different from some sort of dream. I remember being 'up' as 'not in bed' but with the ability to fly around inside my house. While it was dark, I was able to see like one might in semi bright moon light.
I flew slowly through the main floor of the house and down the stairs to the basement. At the time, (mid 1950s), we had one of the first finished basements I had ever seen, with a tile floor and pine paneling hiding the pipes and electrical stuff. As I flew down the stairs, I looked over to the far side of the room which my mom & dad use as a bedroom and vaguely saw their sleeping forms under the covers. My vision was a bit fuzzy I suppose.
This was a scary place (location) as I had a somewhat recurring dream where some monster, not unlike a spotted leopard, would jump out from behind a clothes rack and attack me. In the dream, the basement was always fully lighted, and in full color as it appeared in the day time. In this experience, the lights were out as one would expect with everyone asleep. I paused at the bottom of the stairs, half expecting to fight this leopard from my dreams. When that didn't happen, I was greatly relived and must have decided to go back up stairs to my room.
I don't remember anymore except for telling my mom about the 'dream' the next morning. It has been so long I am not sure of the year or the season. Not until the mid 60's, when I had discovered "Ghost Hunter" by Hans Holzer, (I have a submission over in YGS.) and got started on an interest in the Para Normal, that I realized what had happened back at the time of my childhood. At this time I have no idea when I actually became aware of the notion of astral projection; though, there was a comic book character (mid 1960s) who, while confined to a wheel chair, could leave his body and gather information. (I found this idea fascinating) I somewhat remember projecting, or thinking I did, during the 70's from time to time. Somewhere during that time frame I came across "Journeys Out of the Body" by Robert Monroe. I may have had an experience as recently as 10 years ago where I experienced the tingling of separation and wound up next to my ceiling.;)