I can't find my receipt, but I've had him for about 6 months. I don't actually know how old he is, he was just advertised as "adult", so he may have been brumated in the past as I know the place I got him from produces a fair number of hognoses.
Without the daylight bulb it's around 80F on the warm side, so I'm going to spend today playing with the thermostat on his UTH and see if I can get that closer to 86-88 and just ditch the bulb. I tried to hook the same model bulb up to a dimmer and it just burned out.
I'm in northern California, so the days are definitely shorter and cooler now.
Thanks guys, hopefully I can get him comfortable and happy ASAP.