• Before making a single edit, Tropedia EXPECTS our site policy and manual of style to be followed. Failure to do so may result in deletion of contributions and blocks of users who refuse to learn to do so. Our policies can be reviewed here.
  • All images MUST now have proper attribution, those who neglect to assign at least the "fair use" licensing to an image may have it deleted. All new pages should use the preloadable templates feature on the edit page to add the appropriate basic page markup. Pages that don't do this will be subject to deletion, with or without explanation.
  • All new trope pages will be made with the "Trope Workshop" found on the "Troper Tools" menu and worked on until they have at least three examples. The Trope workshop specific templates can then be removed and it will be regarded as a regular trope page after being moved to the Main namespace. THIS SHOULD BE WORKING NOW, REPORT ANY ISSUES TO Janna2000, SelfCloak or RRabbit42. DON'T MAKE PAGES MANUALLY UNLESS A TEMPLATE IS BROKEN, AND REPORT IT THAT IS THE CASE. PAGES WILL BE DELETED OTHERWISE IF THEY ARE MISSING BASIC MARKUP.


WikEd fancyquotes.pngQuotesBug-silk.pngHeadscratchersIcons-mini-icon extension.gifPlaying WithUseful NotesMagnifier.pngAnalysisPhoto link.pngImage LinksHaiku-wide-icon.pngHaikuLaconic

At its highest point (1991), it was 17 minutes to midnight; at its lowest (1962), it was 2 minutes. As of Janurary 2012, the clock stands at five minutes until midnight.


"And When the Clock Strikes Twelve tell me where ya gonna be?

Cleaning up the mess we've made or watching your TV?"
Billy Talent, Turn Your Back

The Doomsday Clock is a symbolic clock face maintained by the Bulletin of the Atomic Scientists at the University of Chicago. When it was originally introduced in 1947 the clock symbolized how close the world was to nuclear war, with the metaphor supporting it being: talks have broken down, and once midnight hits, the attacks start. And we are all doomed. But since the fall of the Iron Curtain, the original metaphor is (mostly) obsolete, and it has expanded to catastrophic destruction of any sort, provided it's on a global scale; the Bulletin's website specifically mentions Global Warming and bioengineering as possible causes in addition to nuclear war. The Doomsday Clock is a very real and very eerie example of When the Clock Strikes Twelve and as such, it has received nods by several works.

The Doomsday Clock is updated periodically by the Bulletin, however the changes do not always occur in time with world events. Most notably, the Cuban Missile Crisis, which was the closest the Cold War got to open nuclear conflict, reached its climax and was resolved before the Clock could be changed. The closest it's been was 100 seconds to midnight in 2020 while the farthest was 17 minutes from 1991-1995. In January of 2012, it was set forward a minute to five minutes to midnight in light of worldwide failures to curb the spread of nuclear weapons and reduce the effects of climate change. As of January 2017 the clock stands at two and a half minutes to midnight suggesting that existential threats now pose a greater danger to humanity than they have at any time since the height of the Cold War. In 2018, the clock was changed to 2 minutes to midnight, the same as its previous lowest point in 1953-1959. In January 2020, the count to midnight was further decreased by 20 seconds following the conflict between The United States and Iran. Global warming also remains a major factor in keeping the clock so close to midnight.

As mentioned, this is a subtrope of When the Clock Strikes Twelve. Compare: Death's Hourglass which could be this for a single person.

Examples of Doomsday Clock include:

Comic Books

  • A recurring motif in Watchmen with the clock gradually ticking towards midnight until the end. It is also mentioned directly with the clock being at five minutes near the beginning. Ironically, this is actually further from midnight than the real-life clock was in the early to mid-1980s.
    • The clock is seen more often as the most well-known symbol of the series: the Comedian's smiley-face badge. If you look at it with both eyes pointing up, the bloody smear resembles a minute hand pointing at 11 on a clock. This was actually the entire point of the design, to dress up something happy to somthing terrifying, with one tiny change.



Live Action TV

  • Doctor Who had an episode called Four to Doomsday, which was released when the real life clock was at four minutes.
  • The Heroes episode Seven to Midnight revolved around stopping a nuclear bomb from going off in New York City. At the time it was aired the clock stood at seven minutes.
  • NCIS episode Murder 2.0 had the Doomsday Clock, at the time set to five minutes, used as a clue to indicate the next murder would take place at 11:55 p.m.
  • Lost reveals in later seasons that the repeated number sequence, 4 8 15 16 23 42 is in fact a component of an insanely accurate Doomsday Clock: the Valenzetti Equation, which predicts the extinction of mankind, with the Numbers serving as the input.
  • The second to last episode of Supernatural season 5 is called "Two Minutes to Midnight". "Midnight" in this case referring to the rise of Lucifer on earth, who did show up in the last episode of season 5.


  • 2 Minutes to Midnight by Iron Maiden.
  • Doomsday Clock by The Smashing Pumpkins.
  • Linkin Park's album Minutes to Midnight. The music video for Shadow of the Day from the same album also makes reference to the clock with 11:55 appearing at the beginning.
  • 11:59 by Blondie.
  • The Call Up by The Clash has the lyric "55 minutes past eleven".
  • Likewise, Turn Your Back by Billy Talent has the lyric "When the clock strikes twelve, tell me where ya gonna be?" at the beginning. The entire song makes reference to disasters occurring and hoping the world can change.
  • 4 Minutes (To Save the World) by Madonna.
  • One Minute to Midnight by Justice.

Video Games

  • While not an exact representation, Rise of Nations has an example clearly based on the Doomsday Clock. When a player researches nuclear weapons, a counter appears on his HUD. Every time any player uses a nuke, it goes down by 1. If it reaches zero, the game ends with everyone losing as the clock strikes midnight.

Web Comics

  • Homestuck has a doomsday clock near Terezi's home.

Western Animation

  • One episode of Adventures of the Gummi Bears featured a Doomsday Clock built by an evil sorcerer, which would actually destroy the world if it ever struck twelve - unless, of course, it was destroyed first.