Superman (Vol2) #93

Superman recruits Supergirl’s help in combating the time rifts discovered during Zero Hour. While heading back to New York City to regroup with the rest of the heroes, Superman stops by Smallville to check up on his parents. However, he is shocked to find Jor-El and Lara standing there. Evidently, the time fluctuations have caused an alternate-reality Jor-El and Lara to appear; a couple from a timeline where Krypton did not explode after they sent Kal-El to Earth. In this continuity, Kal-El has a brother Zan-El. While Jor-El and Lara want Superman to return to them on Krypton, Superman realizes that this is just another time anomaly. He does get to spend one last moment with them before they fade, just before Metron arrives to urge Superman to meet up with the rest of the heroes.

Notes:

"DC Universe 19" one page advertisement piece with information on the upcoming Zero Hero mini-series. Plus, San Diego Comic-Con 1994. Included are dates, times and location of the convention.
A Zero Hour crossover issue.
Triangle 1994 #34.
Chronological continuation from Superman: The Man of Steel #37.
Chronological continuation in Adventures of Superman #516.