The Panopticon/Date in Planet of the Dead and The End of Time

This wiki repeatedly refers to the setting of Planet of the Dead and The End of Time as taking place in 2009. While there's a pretty overt passage of four years from Rose to Journey's End (notably Rose being away from home for a year in the pre-titles of Aliens of London, and Voyage of the Damned saying The Christmas Invasion was the Christmas before last), is the setting of Planet of the Dead and The End of Time ever actually stated (or suggested through mentions in other stories) to be the Easter and Christmas immediately after Voyage of the Damned, or even anything more specific than "an ambiguous amount of time after the planets in the sky"?