I also have the KX-TA824. My clock was off a few hours. I manually reset it. I want to enable the automatic time adjustment, but for some reason when I try to enter program 152 I get 2 beeps and no program is available. is there a card I am missing? The system was in the house when I arrived - previously installed a TD308 in my old house so I am somewhat familiar with Panasonic systems.