When Does "X-O Manowar" #5 (1992) Take Place?
"X-O Manowar" #5 v1 “Revelations” is a science fiction comic-book written by Jim Shooter with Bob Layton that released March 1992. So when is "X-O Manowar" #5 set?
It takes place on the fictional Valiant Universe timeline in the year:
We know this because page one includes a time and place setting textbox that reads "Underground alien base, North of Dover- Foxcroft Maine. March 26, 1992, 8:01 A.M." So it's presumably March of 1992 AD.

1992 AD
We know this because page one includes a time and place setting textbox that reads "Underground alien base, North of Dover- Foxcroft Maine. March 26, 1992, 8:01 A.M." So it's presumably March of 1992 AD.
It has been collected into a volume 1 hardcover subtitled "Birth" and a volume 1 paperback subtitled "Retribution".
It is an early chronological comic-book in the Valiant Universe (a chronologically sixth comic to feature X-O Manowar) and can be read at its timeline point.