I, and many others have the same problem .
It appears that the auto date signal is no longer being updated by the transmitter(s), and is defaulting to 27th March.
The only suggestion that I have seen is to turn the auto clock update OFF on your VCR (if your model allows it) and set the time and date manually. The problem with doing this is that if you subsequently switch the power to the VCR Off at any time, you will have to reset the time when you next switch on.
Information I have gleaned from the web is that the removal of the auto date signal is permanent.
John, April 2011