I've been out a few times with a night riding group that Doohickie introduced me to. Lots of fun. Since I put strong lights on my bike, I've also frequently gone out an hour before dark to ride the river trails around here. It's quite pleasant to be out after dark. Fireflies light my way through the forest and croaking frogs serenade me as I ride up the river. The gnats suck, though. Haven't done any midnight rides like you describe, however.