Re: Red Dwarf series 9 (or is it 10?) in 2012 confirmed by Craig Charl
Looks like Dave gets a Fathers Day card from Jim & Bexley in the alternate dimension.
I wonder how long it takes the post office to deliver between dimensions? 3 million years is about average for 2nd class post.
Doubt that's it, Dave Lister is the mother remember.
More likely is that he sent the card to himself, seeing as he's his own dad etc.
Another fine possibility
But since they were 18 years old within three days, he might've taught them to call him Dad.
Rimmer, on what period of history to live in-
“Well, It’d be the 19th century for me, one of Napoleon’s marshals.
The chance to march across Europe with the greatest general of all time and kill Belgians” - (White Hole).