I had dinner at the house of friends (Bat Goddess and Curmudgeon) and came home at about 9PM because I was tired. Durned if I didn't stay up until about 3:30 AM because I was having too much fun playing guitar and Mudcatting. Midnight passed without me noticing.

I also had one of those migraines that reached the severity I only experience once every 2 or 3 years. Probably just a backlash from sleep cycle screw-up, and I couldn't have slept anyway.