When John talks to his mother, you can see that the boat behind him is named "Prowler." That's what Aeryn's ship is called.
This episode takes place from October 30 to October 31, 1985 and in December 2003.
The carving on the pumpkin that Rygel made "scary", is the face of Scorpius.
There is a Dead Kennedys logo in the house that the crew of Moya take refuge in.
Classic fish out of water trope