With your help, I think I have figured this mystery out. Since the charging system seemed to be working and the battery was adding power after being driven, I was forced to decide that something was draining the battery over time. With one battery cable disconnected, I checked the draw on the battery. I then reconnected the battery and checked the draw on at the fuse box, one fuse at a time. Going through the fuse panel one by one to check current, I found that fuse #8 was accounting for virtually all of the current flow shown at the battery. The clock is on that and it was indeed working but really could not account for much power usage. The over head light is there and when turned on, the power jumped. So that wasn't it. I then opened the glove box. The light was on but there was no jump in power. When I pressed the light switch in there the power dropped to almost nil. I released the switch and the power jumped. I closed the box and it stayed the same. I then saw that the strap from some item that my wife keeps clogging her glovebox with was actually hanging out and could be keeping the door from closing enough to actuate the switch even the the door was latched. I removed this item and now the power drops when the door closes. After sitting overnight in the cold, the car now starts up as usual. Thanks to all!