Well, it happened.  I think there is one day just after the time change where my body reacts to the night coming so early in the evening by making me sleep a long sleep, and it happened last/Monday night.  Now, it was aided by a long day: I took Mother to physical therapy in the morning, and then I went to work around noontime, pulling in a fully day that didn't end until around 8.  After I ate at Burger King, I went home ... and promptly went to sleep around 10:30.  I felt my body being tired, too.  I hear some commotion outside (probably Mother taking her pills) around 5, but I fell asleep again, only to be woken up just now by the alarm.

I should be as awake as I'll be, for the day and, who knows, the winter.