When Does "The Fall of Hyperion" (1990) Take Place?
"The Fall of Hyperion" is a science fiction novel written by Dan Simmons that released February 1st, 1990. So when is "The Fall of Hyperion" set?
It takes place in the year:
We know this because it follows mere days after the events of the previous novel "Hyperion" (1989), which takes place in 2764 AD.

2764 AD
We know this because it follows mere days after the events of the previous novel "Hyperion" (1989), which takes place in 2764 AD.
Additionally, there's an epilogue that's unplaceable but seems to take place only months later so probably still within the 2764 AD calendar year.