Zero Hour: Crisis in Time Mini Issue 1

• First appearance of Jack Knight (Starman VII).

• "Zero Hour (Part IV)" –
... 2 Hours, 12 Minutes Ago: In Coast City, Warrior, Steel, Supergirl and Batgirl attempt to escape the entropy, fresh from their own adventure through time.
... 1 Hour, 58 Minutes Ago: In the 30th Century, the Legion of Super-Heroes stand with their time paradox counterparts and the Time Trapper, waiting to be consumed by entropy.
... 53 Minutes Ago: In New York City, Wonder Woman helps Power Girl through her pregnancy.
... 40 Minutes Ago: Jay Garrick pleads with the Spectre to get involved in the Crisis.
... 29 Minutes Ago: As chaos consumes New York City, Metron takes a select number of heroes to Vanishing Point, to seek temporary haven where time does not exist, and regroup themselves.
... 24 Minutes Ago: Metron, along with Superman, Green Lantern, Donna Troy and the Atom arrive at Vanishing Point and find the Linear Men still in stasis.
... 14 Minutes Ago: Alan Scott and Starman preside over their injured friends in the hospital.
... 13 Minutes Ago: Finding them hiding in one of the last remaining pockets of reality, Extant brutally murders the Leymen.
... 7 Minutes, 34 Seconds Ago: Extant shows up in New York City and confronts the last heroes left alive.
... 60 Seconds Ago: Parallax 

NOTE: Mini-series was published weekly, starting with issue #4 and counting down to issue #0.