I lose all sense of time when I am outside. Lately, it's been unseasonably warm and Saturday I was out in the back yard all afternoon and, of course, lost all sense of time. My husband came out and asked me if I was ready to come in since it was completely dark. I looked around and sure enough, he was right. There was no light and I had not really noticed!
Come to think of it, we went out to eat that night.