It was a weird night. I turned off the lights around 9:15, and spent the next two hours fighting sleep while romping kitties leaped over me, pursued each other across my bed and about the apartment. At one point there was the crash of something I have yet to discover. I don't know when things quieted down, but when I woke, it was nearly 2:00 a.m. At that point it was freezing in the apartment, and all three cats were occupying 3/4 of my bed.