Zero Hour: Crisis in Time!

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"Zero Hour: Crisis in Time!" is a

Zero Hour: Crisis in Time! was the follow-up to the Crisis on Infinite Earths limited series. This event served as an opportunity to reconcile continuity problems left unaddressed by Crisis and other problems that had been unintentionally caused by it. In particular, the revised characters of the post-Crisis universe had been rolled out gradually, with DC continuing to feature the old versions until the new versions were launched.

Plot

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The story begins when characters from alternate realities such as

DC published a fold-out timeline inside the back cover of Zero Hour #0 which identified various events and key stories and when they occurred. Although fixed dates were given for the debut of historical characters such as the JSA, the debut of Superman was presented as "10 years ago" and subsequent dates were expressed the same way, keeping the calendar years of these events fluid and relative to the present as a way to keep the characters at their present ages.

The Legion of Super-Heroes was completely rebooted following Zero Hour, and the various Hawkman characters were merged into one. Each ongoing series at the time retold the origin of its heroes in a #0 issue published after the end of Zero Hour and resumed their previous numbering the following month or went on to #1.

Tie-in issues

• Action Comics #703
• The Adventures of Superman #516
• Anima
  #7
• Batman #511
• Batman: Shadow of the Bat #31
• Catwoman (vol. 2) #14
• Damage #6
• Darkstars #24
• Detective Comics #678
• Flash
  (vol. 3) #94
• Green Arrow (vol. 2) #90
• Green Lantern (vol. 3) #55
• Guy Gardner: Warrior #24
• Hawkman (vol. 3) #13
• Justice League America
  #92
• Justice League International (vol. 2) #68
• Justice League Task Force #16
• L.E.G.I.O.N. '94 #70
• Legion of Super-Heroes (vol. 4) #61
• Legionnaires
  #18
• Outsiders (vol. 2) #11
• Robin (vol. 4) #10
• Showcase '94 #8-10 (prelude)
• Steel (vol. 2) #8
• Superboy (vol. 3) #8
• Superman (vol. 2) #93
• Superman: The Man of Steel #37
• Team Titans #24
• Valor #23
• Comics Values Monthly #95
• Zero Hour Sampler
• Zero Hour: Crisis in Time Ashcan Edition
• Zero: The Beginning of Tomorrow

Series ending with Zero Hour

• Team Titans (a spin-off of The New Titans)
• L.E.G.I.O.N. '94
• Valor
• Justice League International (vol. 2)

Series rebooted during Zero Hour

• Legion of Super-Heroes (vol. 4) and Legionnaires (after Zero Hour, both titles were treated as one bi-weekly series, much like the Superman books at the time)

Series launched following Zero Hour

• Extreme Justice
• Fate
• R.E.B.E.L.S. '94 (replacement for L.E.G.I.O.N. '94)
• Manhunter
• Primal Force
• Starman (vol. 2)
• Xenobrood (miniseries)

Zero Month

Following the end of Zero Hour, every DC Universe title published a #0 issue retelling the character or team's origins and featured the slogan "The Beginning of Tomorrow!" in an event dubbed "Zero Month".^{[citation needed]}

• Batman #0
• Deathstroke the Hunted #0
• Flash (vol. 3) #0
• Legion of Super-Heroes (vol. 4) #0
• Primal Force #0
• The Spectre (vol. 3) #0
• Superboy (vol. 3) #0
• Superman: The Man of Steel #0
• Wonder Woman (vol. 2) #0
• Batman: Shadow of the Bat #0
• The Demon (vol. 3) #0
• Green Lantern (vol. 3) #0
• Hawkman (vol. 3) #0
• Justice League America #0
• The New Titans #0
• Starman (vol. 2) #0
• Superman (vol. 2) #0
• The Adventures of Superman #0
• Batman: Legends of the Dark Knight #0
• Detective Comics #0
• Fate #0
• Gunfire #0
• Justice League Task Force #0
• Legionnaires #0
• Outsiders (vol. 2) #0
• The Ray (vol. 2) #0
• R.E.B.E.L.S.'94 #0
• Steel (vol. 2) #0
• Xenobrood #0
• Action Comics #0
• Anima #0
• Aquaman #0
• Catwoman (vol. 2) #0
• Damage #0
• The Darkstars #0
• Green Arrow (vol. 2) #0
• Guy Gardner, Warrior #0
• Lobo #0
• Manhunter #0
• Robin (vol. 4) #0

Booster Gold #0 (2008)

In 2008, 14 years after the end of Zero Hour, an issue of