[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/midnightsun_3678.png]]
[[caption-width-right:350: This photo was taken at midnight.]]

Sometimes the night just won't come. The daylight never ends, possibly because of an unusual planetary alignment, solar phenomenon, or even because of a kind of [[AppliedPhlebotinum phlebotinum]] that is actually preventing the day from ending.

Powerful beings will occasionally threaten to invoke Endless Daytime as a punishment or a show of power. This is uncommon, though, and when this ''does'' happen, it's more in the vein of "Hah! Look what I can do!" rather than "You'd better do what I say or else". This likely has to do with the fact that [[MostWritersAreHuman humans are generally diurnal]] and psychologically [[LightIsGood associate daytime with positive things like warmth, happiness and growth]]. In fact, it's far more likely for [[AGodAmI godlike beings]], the BigBad, {{Sufficiently Advanced Alien}}s, and {{Eldritch Abomination}}s to attempt to bring on [[TheNightThatNeverEnds eternal night]] instead.

Really long daytime hours are a staple of ScienceFiction. The causes of the everlasting daylight could be anything from having multiple suns to having a HollowWorld with a sun in the center. [[TruthInTelevision On Earth]] there is a phenomenon (pictured) that causes up to several months of nonstop sunshine in certain parts of the world, but this is rarely used as a setting in SciFi. A common explanation is a TidallyLockedPlanet, where one side of the planet will be in perpetual daytime while the [[AlwaysNight opposite will be true]] of the other side.

Contrast AlwaysNight, [[ExactlyWhatItSaysOnTheTin which is the inversion of this trope]], and TheNightThatNeverEnds, which is AlwaysNight with deliberate causation (there are few enough examples of EndlessDaytime that this split does not apply here). This trope is not about Video Games where all levels are always illuminated by midday sun, regardless how long you stay there; see InUniverseGameClock.
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!!Examples:

[[foldercontrol]]

[[folder: Anime & Manga ]]
* In ''Anime/DragonBallZ'', the planet Namek had multiple suns shining on it from all sides, keeping it in perpetual daylight.
* The Cat Kingdom in ''Anime/TheCatReturns'' experiences perpetual noon. This is because the kingdom is its own mini-dimension (explicitly stated in the manga to be the cats' spirit realm), and time passes normally outside of it.
* In ''Manga/OnePiece'', the judicial island Enies Lobby is always in the sunlight at all hours of the day or night, which is the reason for its nickname of "the nightless island".
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[[folder: Comics ]]
* Skartaris, the setting for ''Comicbook/TheWarlord'', is based on Pellucidar and has a similar 'eternal noon', save at the poles at the very edge of the world.
* ''Series/{{Angel}}: After the Fall'' has LA in hell, with both sun and full moon up at the same time, which makes things interesting for werewolves. And vampires. And, well, it's hell.
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[[folder: Fanfiction ]]
* A common trope in ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfics where [[BigGood Princess Celestia]] goes bad. The eternal day mirrors what her sister, Princess Luna, did in the show's backstory when she became Nightmare Moon.
** In ''[[http://www.equestriadaily.com/2011/06/story-solar-eclipse.html Solar Eclipse]]'', [[LightIsNotGood Princess]] [[RonTheDeathEater Celestia]] refuses to lower the sun and bring about everlasting day.
** [[http://www.equestriadaily.com/2011/06/story-corona-blaze.html Corona Blaze]] does the same thing by subjecting her to the same transformation that befell her sister.
** In Fanfic/SunshineAndFire, a handful of characters end up stranded in a parallel world where an evil Celestia, known as Daymare Sun, began an eternal day a thousand years ago. Nobody in that world even has a concept of the night, let alone knows the word, and most of the planet has been turned to desert.
** [[http://www.fimfiction.net/story/69540/shadow-of-the-sun Shadow of the Sun]] includes this, although what this actually means as far as Celestia's status remains a mystery through AT LEAST halfway through chapter two.
** A variant occurs in ''Fanfic/TwilightTheTerrible'', where Twilight receives Celestia's powers, [[HowDoIShotWeb but doesn't know how to use them]].
* Welcome to [[Machinima/RedVsBlue Blood Gulch.]] The sun never sets in this canyon.
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[[folder: Film ]]
* In ''Film/LastNight'', some sort of unspecified disaster is about to end the world and as a result, the sun never stops shining.
* The planet the protagonists crashland on in ''Film/PitchBlack'' orbits three suns, such that it is always sunlight except once every 22 years, when the three suns line up and are simultaneously eclipsed. Bad things happen at that time. Guess what they land [[ContrivedCoincidence right in time]] for?
* ''Franchise/StarWars''' Ryloth, the Twi'lek homeworld, a tidally locked planet.
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[[folder: Folklore]]
* There's an Old Italian folktale where the Hero makes a bet with his brothers-in-law that the sun will set at midnight. They laugh, and are glad to get all his stuff, but the Hero made a deal with the Sun, and the Sun doesn't set until well past midnight.
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[[folder: Literature ]]
* In Creator/MichaelMoorcock's ''[[Literature/TheCorneliusChronicles A Cure For Cancer]]'', the villain's attempts to impose more order on existence causes this.
-->"The sun hasn't moved for an-- for some t--" Mitzi gave up. "It isn't moving."
* In Creator/LarryNiven's ''Draco Tavern'' series, the home planet of the alien Chirpscithra is tidally locked. The species evolved in the "twilight region" around the planet's terminator zone.
* Sparhawk accidentally causes this in ''Literature/TheElenium'', when he uses Bhelliom to help him catch up with [[TheDragon Martel]] … but leaves the ''method'' up to the Troll-Gods. The method employed was TimeStandsStill, as when the enchantment was removed about two days later ([[spoiler:when an enemy actually managed to chase them within]]) no actual time had passed in the interim. Still, because of ''when'' the enchantment had been invoked, it was the trope for Sparhawk's party.
* ''Beasts of Literature/{{Gor}}'' takes place in the far northern region of the planet, which has long times of sun and no sun respectively.
-->"Come along," I said to Poalu. "It will soon be dark." That was true. [[DeadpanSnarker In a few weeks the Arctic night would descend]].
* Creator/IsaacAsimov's short story, and then novel, ''Literature/{{Nightfall}}'' is about a planet whose star system has 6 suns. As a result, the planet is illuminated all the time. Well, almost.
* The ''Literature/{{Pellucidar}}'' novels are set in a HollowWorld that has a sun at the centre. Thus it is always noon in Pellucidar, no matter where you are.
* In ''Discworld/{{Pyramids}}'', after [[RealityIsOutToLunch Reality Goes Out To Lunch]], the competing sun gods turn the sun's arc into something akin to a spirited ballgame.
* In Creator/SandyMitchell's ''TabletopGame/{{Warhammer 40000}}'' Literature/CiaphasCain novel ''The Traitor's Hand'', all the action happens on a tidally locked planet (though Cain's regiment, made of Valhallan ice warriors, mainly operates on [[TheNightThatNeverEnds the "dark" side]]).
* ''Literature/TheSpaceOdysseySeries'':
** In ''2010: Odyssey Two'', [[TheMonolith monoliths]] [[GreyGoo self-replicate]] inside Jupiter, causing it to reach critical mass and become a star. This defrosts Europa, a tidally-locked moon of Jupiter, allowing it to support intelligent life. This also makes the other moons of Jupiter habitable to humans.
** ''2061: Odyssey Three'' reveals that due to the appearance of the second sun in the sky, because its far orbit meant Earth now often had a ''literal'' midnight sun, several species of nocturnal creatures on Earth ended up going extinct, while others suffered a period of disorientation before they eventually adapted.
* In the Millennial Kingdom in the ''Literature/LeftBehind'' book ''Kingdom Come'', there's still a morning and an evening, but the only difference is that the evening sun is less bright than the morning sun.
* In [[Literature/EarthseaTrilogy one of the Earthsea books]], one of the backstory's greatest heroes, Erreth-Akbe, is said to have gained eternal fame by defeating a being (a mage or possibly a dragon) called the Firelord who sought to stop the sun at noon so that there would be light unending.
* The planet Chiaros IV, in ''Literature/Section31Rogue'', is tidally locked, with endless day or night depending, naturally, on which side you're on. Life exists on the twilight band.
* In ''Literature/TheSilmarillion'', Endless Daytime was the original plan for Middle-earth, lit perpetually by the cosmic lanterns Illuin and Ormal. After Big Bad Melkor destroyed them and plunged Middle-earth into TheNightThatNeverEnds, the godlike Valar fled to Aman which they lit with the miraculous Two Trees of Light. These, like the Lamps before them, never went dark (although they did periodically fade into a twilight-like state) and so Valinor had Endless Daytime.
* In ''The Memory of Sky'' (a ''Literature/GreatShip'' novel), the HollowWorld is perpetually lit from below, though the light output varies as the hydrogen-breathing plants in the lower section of world (where the sun is) expands exponentially over the course of hours (darkening the world) before igniting into a blazing inferno, wiping everything clean at "noon". In the climax, when [[spoiler: the light is shut off, the human population goes into a wild panic]]
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[[folder: Live Action TV ]]
* One episode of ''Series/NorthernExposure'' (set in Alaska) takes place during the Midnight Sun. People go a little crazy. er.
* In the ''Series/StargateSG1'' episode "The Broca Divide", the heroes visit a planet that is tidally locked. While the inhabitants of the "light side" have a Bronze Age culture bearing similarities to the Minoan civilization, the dark side is infected with a plague that turns people into savages.
* ''Series/TheTwilightZone''
** In the episode "[[Recap/TheTwilightZoneS3E75TheMidnightSun The Midnight Sun]]" the Earth is spiraling closer and closer to the sun, and it is perpetually day. [[spoiler: Except it turns out the main character is dreaming, and [[TheNightThatNeverEnds the Earth is actually spiraling AWAY from the sun and freezing.]]]] [[note]]For this to work, the Earth would have to become tidally-locked, meaning the other side would be constantly dark and probably somewhat less hot. [[spoiler: And moving away from the sun makes tidal locking highly improbable.]][[/note]]
** Another episode, "[[Recap/TheTwilightZoneS4E118OnThursdayWeLeaveForHome On Thursday we Leave for Home]]", is set on a planet with two suns that make for a barren, inhospitable world for a marooned colony.
* When the cosmic {{balance|BetweenGoodAndEvil}} is thrown off in ''Series/{{Charmed}}'', the main and predominantly good universe becomes ''too'' good. One of the side-effects of this is that it always sunny, with everyone being repulsed at the mere thought of the sun going away for any length of time.
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[[folder: Mythology and Religion ]]
* Literature/TheBible:
** God causes the sun to stay stationary in the sky for an entire day until the battle between the Israelites and the Amorites is over.
** There's constant daylight in the New Jerusalem because the Lamb produces the light.
* In ''Literature/TheBookOfMormon'', as a sign of Jesus Christ's birth the Sun sets but it doesn't become dark.
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[[folder: Tabletop Games ]]
* In year 374 of ''TabletopGame/RuneQuest'''s world of Glorantha, the sun stopped in the sky, which halted time. ''[[AllMythsAreTrue Every]]'' [[AllMythsAreTrue culture has a myth]] explaining why their gods/enemies stopped the sun, and how they or their gods started it again.
* In ''TabletopGame/MagicTheGathering'' there are several places where this is the case.
** The plane of [[TabletopGame/MagicTheGathering Mirrodin]] has five suns. There ''is'' night time, but it's brief and exaggerated. Basically the only reason this is worth mentioning is the flavor text on [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=194105 Grasp of Darkness]].
** The plane of Serra is bathed in the light of a perpetual sunrise.
** In Lorwyn "the sun never quite dips below the horizon". This is because Lorwyn is the "Day" in a really messed up Day-Night cycle, while [[AlwaysNight Shadowmoor]] is the "Night".
* ''TabletopGame/{{Exalted}}''
** This is the condition in {{Hell}}, and since the Demon Sun is made of radioactive green hate this isn't fun. The closest it ever comes to night there are those occasions when the Ebon Dragon (who flies through the skies at all times) briefly eclipses the Demon Sun.
** In Creation, this trope is one reason for the creation of the moon and Luna, its goddess. The Unconquered Sun's eternal presence in the sky stunted life and caused it to burn up in emulation of him, so night was created to give both the Unconquered Sun and Creation rest, and the moon and Luna were created to be night's guardian.
* ''TabletopGame/DungeonsAndDragons'' ''TabletopGame/{{Planescape}}'' has the first level of the Beastlands Krigala, which in an eternal afternoon.
* In ''TabletopGame/{{Reign}}'', the sun is in a fixed position in the sky, so you have this trope everywhere that's exposed to direct sunlight, and TheNightThatNeverEnds anywhere that's in shadow or otherwise out of view of the sun.
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[[folder: Theatre ]]
* In the Creator/StephenSondheim musical ''Theatre/ALittleNightMusic'', act II has a thematically appropriate but otherwise IrrelevantActOpener by the chorus called "The Sun Won't Set", in which it stays twilight till around 11pm.
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[[folder: Video Games ]]
* In the 24-hour races of ''[[VideoGame/GranTurismo Gran Turismo 4]]'' the sun never sets. It's fixed for ''[[VideoGame/GranTurismo Gran Turismo 5]]''.
* In ''VideoGame/MetroidPrime 3'', the backstory of the planet Bryyo reveals that the MagicVersusScience war that destroyed the dominant civilization resulted in their planet having one half perpetually in sunlight (reduced to an uninhabitable scorched desert), the other in perpetual darkness (reduced to an uninhabitable frozen wasteland), and only the narrow border between the two sides is still livable.
* In Pokémon Omega Ruby and the original, this is a side effect of Groudon intensifying the sun's rays.
* In one of the Ages of ''VideoGame/{{Uru}}'', the sun moves horizontally across the sky, never dipping beneath the horizon as it circles.
* The world of ''VideoGame/NieR'' has perpetual daylight. It's believed that the cataclysm that destroyed the world also disrupted the day/night cycle, which helpfully keeps the Shades at bay.
* In ''VideoGame/{{Dominions}}'' it's possible for a sufficiently powerful fire mage to pull this off with the global enchantment ''Second Sun''.
* While never stated outright, this is most definitely the case with Twinsun in ''VideoGame/LittleBigAdventure'', as both hemispheres of the planet are constantly warmed by a separate sun.
* The first 15 missions in ''VideoGame/RescueOnFractalus'' take place near the planet's south pole during the summer, so you don't yet have to worry about [[InUniverseGameClock the sun setting.]]
* In the original ''Videogame/PlanetSide'', it never becomes dark. The sun sets, but the sky remains lit by luminous nebula, ensuring it never goes darker than twilight. Averted the sequel, which has true night courtesy of an InUniverseGameClock.
* In ''Videogame/ChronoCross'', at one point you traverse the Dead Sea, a frozen wasteland full of objects from timelines that...no longer exist(It's pretty wierd). At the center is the town's square and bell from the first game, except the sun is eternally just about to set.
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[[folder: Web Animation]]
* ''WebVideo/UltraFastPony:''
** The episode "Ponynet Fight!" uses a "14 hours later..." transition card six times, and it remains day after every transition. It seems like a random joke at first, until the characters wonder aloud why the sun hasn't set yet. Twilight Sparkle realizes it's because, of the two royal sisters who control the cycle of day and night, one of them's been kidnapped and the other is being lazy.
** In "Purple Party Pooper", it happens again. This time, Princess Celestia is deliberately extending the day because it's her birthday.
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[[folder: Western Animation ]]
* ''WesternAnimation/{{Futurama}}''
** One episode has extraterrestrial cats come to Earth to transfer all of its momentum to their home planet, resulting in extremely hot weather and perpetual daytime (or night for the half of the planet not shown).
** There's also the planet from "My Three Suns," where it's rare for all three suns to be down at once.
* In ''WesternAnimation/TheSmurfs'' episode "Queen Smurfette", Father Time fails to bring the close of the day on Smurfette's birthday, resulting in the day never ending until Papa Smurf brings it to Father Time's attention.
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[[folder: Real Life ]]
* At certain times of the year in the polar regions of the earth, the sun will be visible for months at a time. This phenomenon is known as [[http://en.wikipedia.org/wiki/Midnight_sun midnight sun]].
* TruthInTelevision for tidally-locked planets. So far, only theoretical, since none of the Solar System's planets are tidally locked to the Sun, but some exoplanets supposedly are.
* UsefulNotes/{{Mercury}}, due to its closeness to the Sun, was for a long time thought to be tidally locked to our parent star, as the only observations that could be made far from the star's glare showed the same surface features. However in the 60s, radioastronomy showed a 3:2 rotation/orbit resonance which complicated the scenario. While the planet's low inclination affords the poles a perpetual day, areas of the equator can experience the sun rising, stopping in its tracks, going back below the horizon and rising again.
* The Moon has a mountain near its south pole that is bathed in near perpetual sunlight (it gets dark there during a total lunar eclipse).
* Interestingly NOT TruthInTelevision for [[{{Irony}} planets with multiple suns.]] If the planet orbits both of the stars in a binary system, the suns will always be close together in the sky, and night will still fall. If the planet orbits one of the stars and the other is farther away, it is indeed possible for the two suns to be on opposite sides of the sky and cause almost constant daylight, but...
** An almost full 24 hours (or whatever the planet's rotation period was) of light wouldn't happen all the time, just when the suns were in opposite parts of the sky (in short, only at the right time of year).
** When it did happen, it wouldn't be full daylight all day. There would still be a period of twilight as one sun set and the other rose.
** If the planet and companion star had significantly different orbital inclinations and/or the planet had a high axis tilt, endless day could occur on one hemisphere for decades, but as the other star crossed the ecliptic to shine on the other hemisphere, or moved so that one pole or the other always pointed towards it, just as much time would pass without an endless day.
** In most cases, the other star would be bright enough to see by, but not enough to affect the planet's temperature significantly or allow photosynthesis.
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