This handy metaphor is pulled out of the writer's bag of tricks whenever we need to be shown that time is of the essence in a particular dilemma. It is almost as good as a Magic Countdown for getting across the message that time is running out. Expect the minute hand to be mighty close to the 12 at the top of the clock.
The Bulletin of the Atomic Scientists at the University of Chicago actually keep one as a prop... of DOOM! 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. Since the fall of the Iron Curtain, the original metaphor is (supposedly) obsolete, and it was 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 of DOOM in addition to nuclear war; however, given they can never go a year without also mentioning "global nuclear weapons modernizations" it's most probable that the simple existence of nukes remains a big Author Tract for the Bulletin.
- Laid close to the Twelve Zodiac Houses in Saint Seiya, is a tower whose clock has blue flames where the numbers would normally be. When Athena gets hit by a cursed arrow, the flames tell how many hours remain until the arrow ends up killing the wounded goddess. Once every hour, one flame is extinguished, so the main characters have only twelve hours to travel through the twelve houses, defeat the Gold Saints patrolling said houses, and convince the head honcho to remove the arrow from Athena's chest. In the end, all twelve flames in the clock disappear, but Athena manages to lift the curse and the arrow with her cosmic energy.
- In JoJo's Bizarre Adventure, when Polnareff first appears as an enemy, he uses his rapier on Avdol's flames to draw a clock on a flipped table, claiming that he could kill Avdol before its hand reached the 12. But Avdol uses his manipulation of fire to get rid of the clock, calling Polnareff out on his arrogance.
- 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, because of the deterrent posed by Dr. Manhattan at the beginning of the story, this is actually further from midnight than the real-life clock was in the early to mid-1980s (his departure moves the clock up significantly). 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 something terrifying, with one tiny change.
- Doomsday Clock by DC Comics. Enough said.
- One Sunday strip of Brewster Rockit: Space Guy! had Agent X bring aboard the Doomsday Clock, itself a physical representation of the time to doomsday. Brewster, having missed this explanation, thinks the clock is off and sets to the proper time of midnight. This causes nuclear explosions all around Earth in the background.
- In Piers Anthony's novel Wielding a Red Sword, the Incarnation of War can use the Doomsday Clock to bring about World War III.
- In Kim Stanley Robinson's The Gold Coast, where it's about 2050 AD and the Cold War is still going on, one character mentions that the Doomsday Clock has been set at three seconds to midnight for several decades.
- Doctor Who:
- The story Four to Doomsday was released when the real life clock was at four minutes. Possibly a coincidence.
- The story Kinda has an apocalyptic dream sequence that features a multitude of Doomsday Clocks of different technological types.
- In The Pyramid at the End of the World, every clock on earth displays the doomsday time, beginning at three minutes to midnight and advancing throughout the episode as the event that threatens to wipe out all life on earth unfolds. The closest the clock gets to midnight is 23:59:40.
- 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 The Final Battle between Lucifer and Michael, AKA the Apocalypse.
- 2 Minutes to Midnight by Iron Maiden.
- The Smashing Pumpkins, with their song Doomsday Clock from Zeitgeist.
- 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. The video runs slightly over four minutes, ending with mere seconds to midnight.
- 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.
- "Particle Man" by They Might Be Giants doesn't mention doomsday, but it does say that Universe Man has a watch that seems to measure the age of the universe. ("Hes got a watch with a minute hand, a millennium hand, and an eon hand".)
- "Look at Me (When I Rock Wichoo)" by the Black Kids mentions it in the refrain:
When the clock says stop we're all gonna dropI don't care if we get caughtWhen the clock says stop we're all gonna dropI don't care what you've been taught
- 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.
- The Infinite Ocean, an indie game about an amnesic AI trying to avert a disaster, has a symbolic clock set at two minutes to midnight.
- In The Legend of Zelda: Majora's Mask, the player has three days until the moon crashes down on Termina, with a giant clock tower counting down to this in the center of the Hub Level (which is appropriately named Clock Town) and a smaller clock display at the bottom of the screen.
- Lightning Returns: Final Fantasy XIII features this as a central theme of the game, but plays with it: Regardless of what happens, Nova Chrysalia will be destroyed no matter what you do as the player. The clock signifies that you have thirteen (or, if you play really well, fourteen) twenty-four hour days left in to ensure that said world and all of the people living on it are reborn. If you accomplish the tasks at hand, the world will renew itself.
- In Pandora's Tower, while not a Doomsday Clock perse as the fate of the world is not at stake, but the humanity of one girl, there is a clock that ticks throughout the game while you are in the towers. As it depletes, Elena's humanity will slowly fade away as she's painfully transformed into a monster. If it runs out, you get a Nonstandard Game Over, though you can extend the time whenever you want by giving her flesh from the monsters of the towers.
- Used for a Timed Mission in Empire Earth 2, where the final confrontation between the US and the USSR happened in the Bering Strait. The clock starts at one hour, goes down by 10 minutes every time the Soviets destroy a unit or building, and goes up by the same amount whenever you kill a unit or building. They also have an invincible bomber flying around that regularly destroys one of your buildings with complete impunity until you hijack it.
- Homestuck has a doomsday clock near Terezi's home.
- In xkcd, disaster strikes when the doomsday clock is adjusted for Daylight Savings Time.
- 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.
- The title of The Venture Bros. episode Twenty Years to Midnight is a reference to the actual Doomsday Clock.