My clocks must be able to receive a signal because if I remove and then replace the battery they pick up the signal straight away and adjust to the correct time. They normally adjust without any problems when the clocks go forwards but don't seem to want to adjust automatically when the clocks go back.
With regards to my car satnav I have just remembered I have to manually adjust it from BST to GMT and then it will automatically pick up the signal after that ...well, I only have to do it twice a year and that is a long time to remember at my age. I even had to dig out the instructions on how to adjust my wristwatch
------------- I do know everything, just not all at once.