I have been walking in the nude at the dead of night since the age of 15. My favourite time is 3am when the chances of being seen, especially where I live on the outskirts of town, are fairly small.
On Monday morning I walked about half-a-mile stark naked and without shoes but there were no vehicles and certainly no people. I have been seen once or twice over the years but have walked on and nobody has ever challenged me.
The best time was when I lived in a village very close to a bridle-path which led to the next village. I often walked naked a couple of miles along this path. Of course, as I got further from home I got a mixture of excitement and fear of being discovered totally naked in the middle of nowhere. This often led to a large erection!