This episode takes place in December 1994.
Aunt Edna is also the name of the Griswold's Aunt in National Lampoon's Vacation (1983). Interestingly, Doris Roberts, who plays Aunt Edna in this episode, was also in National Lampoon's Christmas Vacation (1989) as a different character.
The title is taken from the classic 1943 Christmas song "I'll Be Home for Christmas" written by Buck Ram, Kim Gannon and Walter Kent which came out the same year as another classic "White Christmas".
Although they share scenes together, Edna never interacts with Cody or JT.