Piper travels back to the same year that her self of 1998 did in the episode That 70’s Episode. She arrives at the moment of Phoebe’s conception, mere weeks before her self of 1998 would arrive, meaning Victor and Patty break up during those few weeks between both her arrivals. They only get back together because of Patty’s pregnancy for Christmas as seen in the episode Thank You For Not Morphing, but they separate immediately after.
Feb 26