This is the first episode of the series not to feature any of the original first generation cast.
This episode takes place from November 8, 1980 to November 2, 1996.
The actress playing Allie at three years old is Elle Fanning, the younger sister of Dakota Fanning who plays Allie as an older child and main protagonist in the later episodes of the series (as well as the narrator of the first 6 episodes). Elle Fanning would go on the be a successful actress in her own right.
At just under 16 years, this covers the greatest time span of any episode of the series.