The original kick off time has been changed from 3pm to 1pm.
Derby County club Secretary Keith Pearson told the official derby website.
"We understand that changes to kick-off times can be an inconvenience to some supporters and we can only apologise for that. But we respect the advice of the police and feel it is only right we comply with their request."
City have just had FOUR early kick offs in a row and now we have another one. Well done to Bradford City who have kept kick off at Valley Parade on January 17th at 3:00pm.