The Day of the Doctor (TV story)

 was the fiftieth anniversary special of Doctor Who. The episode featured the return of David Tennant as the Tenth Doctor and the appearance of John Hurt as a previously unknown incarnation of the Doctor: the War Doctor. Furthermore, the War Doctor's regeneration was shown, into what appeared to be the Ninth Doctor, completing a missing link in the chain of incarnations. The special also included the surprise debut of Peter Capaldi as the Twelfth Doctor, as well as a cameo from an elderly Tom Baker, the former Fourth Doctor, whose role was kept ambiguous as either the Doctor or someone else entirely — the Curator. The episode provided a chance to reveal a missing element of the Last Great Time War that dramatically altered the outcome as viewers were previously led to believe. Instead of allowing Gallifrey to be destroyed, the Doctors were able to save it, giving the current incarnation a chance to forever shed his guilt from the outcome and begin a new mission to find his way home.

The episode was certified by the Guinness Book of World Records as the largest ever simulcast of a television drama, airing in 94 countries and 1,500 theatres worldwide.

The episode was shot, broadcast and screened in cinemas in stereoscopic 3D. Despite confessing that he was not a big fan of 3D movies, writer and show runner Steven Moffat came up with the idea of shooting the episode in 3D and despite his initial worries, found the 3D version to be "better" and "more satisfying" than the 2D version. Knowing that the vast majority of viewers would have watched it in 2D, director Nick Hurran made sure that his shooting style wasn't influenced "too much" by the episode's use of 3D. Nonetheless, Hurran meticulously researched into which 3D films worked and didn't and how before shooting; Steven Moffat believing that Hurran watched "every 3D film ever made". (DWM 468)

Synopsis
The Doctors embark on their greatest adventure in this 50th anniversary special. In the 21st century, something terrible is awakening in London's National Gallery; in 1562, a murderous plot is afoot in Elizabethan England; and somewhere in space an ancient battle reaches its devastating conclusion. All of reality is at stake as the Doctor's own dangerous past comes back to haunt him.

Plot
A police constable walks the beat by the Coal Hill School and passes by a sign advertising "I.M. Foreman, Scrap Merchant". Inside the school, Clara Oswald is giving a lesson. As her students leave, a teacher runs into the classroom informing Clara that her "doctor" called, and left an address. She grabs her helmet and hops on her motorbike. Finally spotting the TARDIS, she drives straight into its open doors. The Doctor, perusing a copy of Advanced Quantum Mechanics, welcomes Clara back with a huge hug. Unexpectedly, the TARDIS takes off without starting the engines.

Startled, the Doctor looks out to see a helicopter carrying the TARDIS away from the field; it's UNIT. He calls their head of Scientific Research, Kate Lethbridge-Stewart, and learns that he has been summoned to the Tower of London. Kate is surprised to learn that he is on-board the TARDIS, which they thought was empty. She has it and him brought directly to the "scene of the crime". Upon arrival, he is handed sealed orders from Elizabeth I and taken into the National Gallery for proof of her credentials.

As they walk, the Doctor explains his relationship with UNIT to Clara, who is skeptical of the Doctor having an actual job. They stop in front of an impossible painting, something that belongs neither on Earth nor in 2013; an oil painting in 3-D. It depicts the fall of Arcadia on the last day of the Time War. Kate tells the Doctor that there is some controversy over the work's name. It is either named "No More" or "Gallifrey Falls". The painting is a slice of frozen time, a form of Time Lord art.

The Doctor is visibly disturbed by the painting. As his old memories awaken, he shares with Clara his darkest secret: the life he has tried to bury for years. There was a past incarnation of the Doctor that fought in the Time War, and made the ultimate decision to eliminate the Daleks and the Time Lords. And it was done on the very day this painting depicts...

As the Daleks ravage Arcadia, the Gallifreyans are running in fear. There is little hope of survival. As children cry and the people scream, a soldier messages the High Council of Time Lords: Arcadia has fallen. He looks around and sees the Doctor's TARDIS. Then the elderly voice of the War Doctor asks him for his gun. He carves a message for the warring civilizations to see: NO MORE.

The High Commanders gather in the War Room, planning their next moves, with the General dismissing the High Council's upcoming plans as "they have already failed". They receive the Doctor's message, calling him a madman. A Time Lady rushes in to inform the War Council that there has been a breach in the vaults. The most feared and forbidden weapon in the universe is missing: The Moment. The Doctor has stolen it, and intends to use it to end the Time War.

The Doctor strides across a desolate desert, a burlap sack over his shoulder. He enters a barn-like dwelling, and uncovers a complicated box, covered in gears. While he puzzles over how to open it, he hears a rustling sound. He opens the door and calls out. A girl's voice behind him reassures him that it’s "just a Wolf". Startled, he turns around: it's Rose Tyler, or at least an entity in her shape. He grabs her arm and throws her out the door, only for her to appear again, sitting on The Moment. She begins questioning the Doctor as to his motives and rationalizations (though it looks like she is making fun of him). Not realizing what she is, he orders her out, and then burns his hand on the box. Impishly, she guides the Doctor to realize that she is the interface of the Moment. She can hear the Doctor's thoughts, and has chosen the form of Rose Tyler/Bad Wolf as a familiar figure from his future. War-weary and bitter, he tells her to stop calling him the Doctor: he has lost the right to bear the title. She replies that he will be the one to save the universe. He explains that the suffering of the universe is too great: he must end it. Like a conscience, she challenges his words and actions, guiding him towards his future. He will destroy the Daleks, but he will also murder his own people. As to how many children on Gallifrey will die, he has no idea. She opens a window in time, to show him the man he will become. A time fissure opens, and a fez falls out.

Kate explains that Elizabeth left the painting to prove that the orders do come from her. The Doctor breaks the seal and reads her words. "My dearest love: I hope the painting known as Gallifrey Falls will serve as proof that it is your Elizabeth that writes to you now. You will recall that you pledged yourself to the safety of my kingdom. In that capacity, I have appointed you curator of the Under-Gallery, where deadly danger to England is locked away. Should any disturbance occur within its walls, it is my wish that you should be summoned. Godspeed, gentle husband." As Kate leads the Doctor and Clara away, McGillop receives a mysterious phone call. Befuddled, he stares at the painting, wondering why he should move it.

In England 1562, the Tenth Doctor and Queen Elizabeth I ride out of the TARDIS on horseback, to prove that it really is bigger on the inside. They share a picnic on a hill, after which he proposes marriage. When she joyfully accepts, the Doctor accuses her of being a Zygon. He whips out a "device that goes ding" to prove that she is a shape shifter, before realizing that it was the horse. They run for their lives, the Doctor now an engaged man. They split up in the woods, but Elizabeth is accosted by the Zygon. The Doctor runs through the woods, even threatening a rabbit before he is reunited with Elizabeth. However, a doppelganger of her appears, and he is unable to tell who is who. Suddenly a time fissure appears, and a fez falls through, shocking the Doctor and company.

Kate welcomes the Doctor and Clara to the Under-Gallery, established by Elizabeth I to house dangerous art. The Doctor notices that the floor is covered in stone dust, and asks Osgood to analyze it (with a triplicate report and lots of graphs). As they walk through the gallery, the Doctor spots a fez and immediately dons it, much to the bemusement of Clara. Kate shows them more 3-D paintings, all landscapes, with the glass covering the floor. The Doctor notes that the glass has been shattered from the inside, and Kate says that they all contained figures, which are now missing. Suddenly, another time fissure opens. Annoyed, the Doctor faintly recalls seeing the fissure before, before realizing that the fez that had fallen through was the fez he was now wearing. Delighted, he throws the fez into the fissure and followed it. Clara tries to follow, but Kate restrains her.

The Eleventh Doctor falls through the fissure and lands in front of the Tenth. Stunned, he dons the fez himself. The Eleventh pops up and gabbles excitedly about how skinny his predecessor is, which makes the Tenth realize who he is. They incredulously pull out their sonic screwdrivers and compare them. As they begin bickering, the time fissure increases in intensity. The Doctor orders the two Queens to run away. They both kiss the Tenth Doctor and flee. The Eleventh shouts through the funnel to Clara. Hypothesizing that the fissure can go both ways, he tosses his fez in, but it fails to appear in Clara's time. Kate then leaves, to call one of the UNIT members, not noticing a dark shadow behind her.

The War Doctor picks up the fez and steps into the fissure. Back in 1562, the two Doctors try to reverse the polarity, but the use of two sonic screwdrivers at once confuses the polarity, resulting in the War Doctor falling through, landing in front of his future selves. He jovially greets them, asking after the Doctor and mistaking them for his companions. The two older Doctors simply pull out their sonics, affirming their identity to their younger self. Unimpressed by his future incarnations, the War Doctor asks if he is going through a mid-life crisis.

Suddenly, they are surrounded by the Queen's soldiers. They are threatened by them, but Clara's voice sounds from the fissure, allowing the Doctors to convince them that she is "The Wicked Witch of the Well". Kate has, at that point, returned to Clara. The Queen returns to the group, implying that her human counterpart is dead. She has them arrested and taken to the Tower of London (the Eleventh loudly hinting for her to take them there). The hint is picked up on by Kate, who takes Clara to the Black Archive to retrieve Jack Harkness' vortex manipulator.

The Doctors are thrown in a cell with a wooden door. The War Doctor tries to sonic the door, but it fails. The Tenth asks why these three Doctors have been brought together.

Osgood and McGilop are reading the results of the analysis of the stone dust. The dust is from materials not found in the structure of the building, but statues. Osgood realizes why the statues were smashed: The inhabitants of the paintings needed a hiding place. The Zygons reveal themselves, accost McGilop, and corner Osgood. Osgood prays for the Doctor to save her, but instead of being eaten, she is faced with her duplicate. The Zygon taunts Osgood, but she gains the upper hand by tripping the alien with its own scarf, and runs.

Kate and Clara enter the Black Archive, housing the most dangerous alien tech recovered by UNIT. Its contents are so top secret that its staff has their memories modified every day. Apparently, this has happened to Clara, as she has already obtained the necessary clearance to enter the archive. They view the Vortex Manipulator, by trying to find the activation code. The Doctor has the code, but he hasn't informed UNIT of it. A scientist phones Kate, and she orders him to take a picture of some numerals (possibly the code) and text it to her. Osgood and McGilop enter the Archive, to Clara's surprise. They and Kate reveal themselves as Zygons. As they prepare to kill Clara, she sees the picture of the numerals on the phone. Taking a desperate gamble, she enters the code and travels to the past.

The Eleventh Doctor scratches the activation code onto a wall in their cell, while the other two Doctors puzzle out how to escape. The War Doctor proposes an isolated sonic shift in the door molecules in order to disintegrate the door, but the Tenth Doctor rejects the idea, saying it would take centuries to calculate necessary formula. The War Doctor starts bickering with the Tenth and Eleventh Doctors, chastising them for their shame of being "grown-up". Subdued, they look at him darkly, reminding him of the day he ended the Time War (unaware that this is that Doctor in the process of making that choice). The Moment reappears, and urges him to ask his future selves the question that he needs to know: How many children were on Gallifrey that day. The Eleventh Doctor claims he doesn't know, and that he's forgotten the events of that day. The Tenth Doctor bitterly states that there were 2.47 billion children that day. The Tenth Doctor has become "the man who regrets" and the Eleventh "the man who forgets". They are the future of the Doctor.

The Moment reminds the War Doctor that his sonic screwdriver, at the most basic level, is the "same software, different face". They realize that if the War Doctor scans the door and implants it as a permanent subroutine in the screwdriver, it will take 400 years to calculate the formula necessary to disintegrate the door, meaning that the Eleventh Doctor's screwdriver, being essentially the same as the ones before it, has the completed calculation ready. They exuberantly congratulate themselves on their cleverness, before Clara pushes open the door, which has been unlocked the entire time. Clara chastises the three Doctors for being obtuse, and the Queen comes in, telling them that she left the door unlocked the entire time as a test. She takes them down to the Zygons' lair to show them their plan.

Osgood walks in the halls of the Under-Gallery, before discovering Kate trapped in a Zygon nest. She frees her, but Kate bemoans the fact that the Zygons have control of the Black Archive.

The Doctors and Clara follow the Queen to the lair, whereupon they discover that the Zygons intend to invade the cushier future in order to establish a new home-world. They therefore have translated themselves into stasis cubes, which are the Time Lord's three-dimensional paintings. They are freezing themselves to escape the primitive time period they are trapped in. The Tenth Doctor tries again to prove that the Queen is the Zygon version, but she reveals (to his mortification) that she is the real Elizabeth: She slew her twin in the forest and took her place as Zygon commander. She calls on the Doctor to save England, but first whisks him away to be married (with his past and future selves as reluctant witnesses, and an enthusiastic Clara).

The three Doctors and Clara return to the Tenth's TARDIS (with the other two insulting the desktop theme). The three Doctor's presence causes the TARDIS to short a bit, showing the interior of the War Doctor's TARDIS, then finally the most current TARDIS desktop (which also receives an insult). They set sail for the Black Archive. Kate, Osgood, and McGillop confront their doppelgangers in the Black Archive. She threatens to detonate a nuclear warhead in order to protect the planet, and voice-activates it. The Doctor's voice crackles on, begging Kate not to detonate but she cuts him off. He tries to land, but the Tower of London is TARDIS-proof. However, they figure out a way to get in. The Doctor calls McGillop in the past, and instructs him to bring the painting to the Black Archive.

The two Kates fight over the detonation, both needing to agree in order to stop the detonation. Osgood begs the Doctor to save them again, as the Doctors and Clara force their way out of the painting, having frozen themselves in it earlier. The three Doctors hand the Kates an ultimatum: They trigger the memory modifiers to confuse everybody as to whether they are a Zygon or a human. Then, if they stop the detonation and create a peace treaty, they will have their memories restored. Utterly confused over their identities, the Kates stop the detonation and negotiate a treaty. As they hash it out, Clara speaks to the War Doctor. She figured out that he hasn't used The Moment yet, explaining that her Doctor always talked about the day he wiped out the Time Lords. She says that he would do anything to take it back, but the War Doctor remains convinced that his actions will save billions of lives in the future. The Moment has come.

The Doctor stands in front of the Moment, a big red button to push. The interface questions him once more, trying to convince him of his goodness. He doesn't believe he is worthy of the name "Doctor", losing all hope for himself and his people. The interface reminds him of his hope as his future selves step out of their TARDISes. They join him at The Moment, ready to support the man who was the Doctor more than anybody else. They prepare to push the button together, but Clara tearfully objects. She never pictured the Doctor actually pushing the button, despite the fact that she knew he did it.

The reality of the Time War projects around them: children crying, innocents suffering. The Doctor could not find another way to end it all, but Clara believes in a different solution. She reminds the Time Lord of who he is: the Warrior, the Hero, and the Doctor. They've had plenty of warriors, and what he will do is a heroic act unto itself. What the universe needs now is a Doctor: never cruel or cowardly, never giving up, never giving in. A new day dawns on Gallifrey: a day of hope.

A brilliant new idea dawns on the Doctors. The intent of the Moment worked: The Doctor saw the future he needed to see. He exclaims that he could kiss "Bad Wolf girl", which catches the Tenth's attention. They change their minds about using the Moment. Instead, they intend to freeze Gallifrey in a moment in time, slipped away in a pocket universe. The Daleks will be exterminated in their own crossfire, and the universe will believe that the two races destroyed each other.

Another message appears before the High Command: GALLIFREY STANDS. The Doctors race in their TARDISes towards Gallifrey, and transmit themselves in the War Room. Three transmissions, each showing a different Doctor, appear. They explain their plan, their mad plan to save Gallifrey. They position themselves around the planet, and prepare to freeze it through the stasis cubes. The General objects, claiming that the calculations would take centuries, but the Doctor is well prepared for the task. After all, he's had centuries to think about it.

Ten more phone boxes fly around the planet, and all the incarnations of the Doctor come together to save Gallifrey – even a thirteenth incarnation from the Doctor's days yet to come. As the Daleks increase their attack upon seeing the thirteen TARDISes, the High Command gives their blessing, and the Doctors save the planet and the Daleks destroy themselves.

Back in the National Gallery, they muse on the ambiguity of whether their plan succeeded. The mysterious painting remains an enigma to the Doctors, another thing lost to time. The War Doctor bids a fond farewell to his replacements, who finally address him as "Doctor": a man finally worthy of the title, even if he only knows it briefly. The War Doctor and the Tenth Doctor won't be able to retain the memory of these events until they occur to their Eleventh incarnation. The War Doctor pilots his TARDIS away, noticing that his body has worn thin again. Regeneration energy begins to overtake the War Doctor, but he is not alarmed in the least. He only hopes the change will leave him with less conspicuous ears this time and smiles peacefully as his next regeneration begins.

The Tenth Doctor questions his successor as to "where they're going"; he relents and reveals that they are destined to die on Trenzalore, in battle. He tells himself that the future is in good hands, and with a smile, he starts to step into his TARDIS, before expressing his desire to change their final destination, as "I don't want to go." He leaves, the Eleventh Doctor remarking "he always says that."

Clara asks the Doctor if he would like to sit to look at the painting for a little while. He smiles, asking how she knew. Clara kisses him on the cheek and tells him that she always knows. As she steps into the TARDIS, she mentions that an old man, possibly the Curator, was looking for him.

The Doctor muses out loud on the fact that he would be a great curator, and that he could retire and be the Great Curator of the gallery. A very familiar voice affirms this, and the astonished Doctor looks over to see a very familiar face sitting next to him. An old man who greatly resembles the Fourth Doctor speaks to him of the painting, and how its two names are actually one: Gallifrey Falls No More. This mysterious curator reveals that Gallifrey is indeed saved. The Eleventh Doctor has a mission, the mission of a lifetime: He must find Gallifrey and return it and all its people to the universe. The Doctor joins his past selves gazing up at the magnificent planet in the sky, determined to save his home once and for all.

Cast

 * The Doctor - Matt Smith
 * The Doctor - David Tennant
 * The Doctor - Christopher Eccleston
 * The Doctor - John Hurt
 * The Doctor - Paul McGann
 * The Doctor - Sylvester McCoy
 * The Doctor - Colin Baker
 * The Doctor - Peter Davison
 * The Doctor - Tom Baker
 * The Doctor - Jon Pertwee
 * The Doctor - Patrick Troughton
 * The Doctor - William Hartnell


 * Clara - Jenna Coleman
 * Rose - Billie Piper
 * Tom - Tristan Beint
 * Kate Stewart - Jemma Redgrave
 * Osgood - Ingrid Oliver
 * Time Lord soldier - Chris Finch
 * Androgar - Peter de Jersey
 * The General - Ken Bones
 * Arcadia father - Philip Buck
 * Time Lord - Sophie Morgan-Price
 * Elizabeth I - Joanna Page
 * Lord Bentham - Orlando James
 * McGillop - Jonjo O'Neill
 * Atkins - Tom Keller
 * Zygons - Aidan Cook, Paul Kasey
 * Voice of the Daleks & Zygons - Nicholas Briggs
 * Dalek 1 - Barnaby Edwards
 * Dalek 2 - Nicholas Pegg
 * Voice over artist - John Guilor

Uncredited cast

 * The Doctor - Peter Capaldi

Locations

 * The Zygon homeworld was destroyed during the first part of the Last Great Time War.

Technology

 * The Eleventh Doctor uses the TARDIS console's friction contrafibulator (TV: Vincent and the Doctor) to stabilise the control room desktop theme. (TV: Time Crash)

Individuals

 * Jack Harkness's vortex manipulator was saved in the Black Archive of the UNIT. It later ended up in the possession of the Eleventh Doctor and Clara Oswald.
 * The board containing photos of Clara's last visit to the Black Archive also showcase photos of previous associates of the Doctor, including Wilfred Mott, Rory Williams, Amy Pond, River Song, Kamelion, Martha Jones, Peri Brown, Alistair Gordon Lethbridge-Stewart, Nyssa, Donna Noble, Captain Yates, Adric, Sara Kingdom, Tegan Jovanka, Barbara Wright, Polly Wright, Grace Holloway, Ben Jackson, Ian Chesterton, Susan, Brigadier Winifred Bambera, UNIT Captain Erisa Magambo, and Rose Tyler.
 * Kate Lethbridge-Stewart's mobile phone has a TARDIS dematerialisation sound set as her ring tone.
 * Clara quotes Marcus Aurelius.

The Doctor

 * The Doctor's age is discussed by the three incarnations:
 * While confronting a rabbit which he briefly believes to be a Zygon in disguise, the Tenth Doctor says that he is 904 years old.
 * When asked how old he is by the War Doctor, the Eleventh Doctor says that he doesn't know and has lost track, settling on "Twelve hundred and something, I think, unless I'm lying." He goes on to say that he is so old he couldn't remember if he was lying about his age.
 * The War Doctor in turn says that he's 400 years younger than the Eleventh Doctor at this point, making him approximately 800 years old.

References to the real world

 * When Elizabeth explains how she killed her Zygon duplicate, she says, "I may have the body of a weak and feeble woman, but at the time, so did the Zygon." This is a direct reference to the, in which she was credited as saying, "I know I have the body of a weak, feeble woman; but I have the heart and stomach of a king, and a king of England too..."
 * The Eleventh Doctor calls the Tenth Doctor "Dick Van Dyke".

Ratings

 * 10.18 million (United Kingdom)
 * 77 million (World)

Specific to theatrical presentation

 * Two specially recorded scenes were shown before the special in its showing in cinemas. The first featured Dan Starkey as Commander Strax, accompanied by his Sontaran clone batch, lecturing the viewers on cinema etiquette. The second featured Matt Smith and David Tennant as the Eleventh and Tenth Doctors instructing viewers to put on their 3D glasses. The second ends with John Hurt's War Doctor suddenly appearing behind the two Doctors who turn towards him while he has back to them as the feature starts.

Specific to the 3D version

 * The original Doctor Who logo is not only in black and white; a 3D effect is added to suggest the logo moving towards the viewer.
 * The 3D paintings are obviously more 3D in the the 3D version.
 * As the Eleventh Doctor walks out of the TARDIS onto the cloud bearing his other selves at the very end of the story, the effect is considerably "more 3D" than viewing the 2D version would suggest.

Common among all versions

 * The story is fronted by the version of the title sequence used on the original episode "An Unearthly Child", modified to include a BBC logo, and slightly shortened. (This version is slightly different than the opening use don the unaired pilot episode.)
 * Day is the sixth televised multi-Doctor story. The others are: The Three Doctors, The Five Doctors, The Two Doctors, Time Crash, and The Name of the Doctor.
 * The end credits list all the actors who have played the Doctor in the reverse order of their incarnations (with the exception of Peter Capaldi who was completely uncredited for his brief appearance). As a result Matt Smith and David Tennant are listed first and second respectively, but Christopher Eccleston is credited above John Hurt.
 * Actor John Guilor is credited as a voice over artist in the credits, although they do not say which role he voiced. Castingcallpro.com credits him as the voice of the First Doctor.
 * This is the first on-screen appearance of the Daleks not to feature those of the New Dalek Paradigm in the Steven Moffat era. This doesn't likely mean that the multi-coloured Daleks are gone, because all Daleks in this story predated the multi-coloured versions introduced in Victory of the Daleks.
 * As Clara leaves the school a clock can be seen to display the time as 17:16, the broadcast time of "An Unearthly Child".
 * The access code for the vortex manipulator is "1716231163". This is a reference to the time (17:16) and date (23.11.63) that the episode "An Unearthly Child" first aired.
 * When paired with the prequel episode TV: The Night of the Doctor, the titles of both episodes reflect opposite moments in the Doctor's personal lifetime. Night depicts the Doctor giving in to despair after suffering an absolute failure, whereas in Day, he has an absolute triumph. The two episodes also bookend the War Doctor's lifetime. Night shows his birth, and Day shows his death.
 * The Ninth Doctor's scene in the climax is footage from TV: The Parting of the Ways.

Production errors

 * There is a basic hair continuity error in the scene where Elizabeth and her duplicate catch up with the Tenth and Eleventh Doctors in the forest. As the two Elizabeths each kiss the Tenth Doctor, the Eleventh's quiff inexplicably escapes from underneath the fez — mostly when he is out of focus — and then is magically back under the fez when he's in tighter shots.
 * When the Tenth Doctor has been kissed by Elizabeth in their wedding, his collar is up in one shot, and down in the next.
 * A close-up of the screen of the Space-Time Telegraph shows that it refers to the Brigadier's last name as "Left-Bridge" Stewart.
 * When all thirteen incarnations of the Doctor arrive to hide Gallifrey in a pocket universe, the Seventh Doctor first appears in his yellow pullover with question marks.When he appears again, his costume changes to the one he wore in the TV Movie and he is now in the Victorian parlor console room. When he appears for the third time, he goes back to wearing the pullover he originally wore in the television series. This emphasises that the archive footage used to generate his presence among the other Doctors has been pulled from asynchronous moments of his life, the early and late periods to be exact.
 * At the end of the special, when the three Doctors are in the museum, the Tenth Doctor asks what the painting is actually called. In that shot, the door to his TARDIS is open. In every shot after that, the door is closed.
 * The last scene of the special, where the Eleventh Doctor is walking out of the TARDIS onto the cloud with his other incarnations, the TARDIS door handle has been obviously removed.
 * A photo of Rose Tyler and Erisa Magambo is seen in the the Black Archive, despite their encounter taking place in a negated timeline. (TV: Turn Left) The shot is taken from archive footage of the episode, although it is possible that Rose might have visited the Black Archive and had her memory erased just as Clara did.

Deleted scene

 * A short deleted scene on the BBC Doctor Who website features the War Doctor, the Tenth and Eleventh arriving at the tower of London in ankle shackles, the Eleventh says his shoes "bring the cool" and that the Tenth "wouldn't understand the cool," the exasperated War Doctor declares they haven't drawn breath "since Richmond".

Continuity

 * The opening scenes mimic the original open to TV: An Unearthly Child. The opening sequence is the original Hartnell titles with the BBC logo added; the first shot shows a police officer going by a sign for 76 Totter's Lane, and the second shot is set at Coal Hill School as class dismisses. Clara is now a teacher at Coal Hill School. A sign shows that Ian Chesterton is chairman of the school's Board of Governors, also showing that a W. Coburn is headmaster.
 * Clara rides a motorbike into the TARDIS console room. A policeman from San Francisco previously rode a motorbike into the TARDIS. (TV: Doctor Who) The Tenth Doctor similarly rode a moped out of the TARDIS in TV: The Idiot's Lantern, and the Eleventh Doctor did the same with a motorbike in TV: The Bells of Saint John.
 * While the TARDIS has previously shown dislike for Clara, Clara is now able to close the TARDIS doors with just a snap of her fingers, suggesting it has grown to like her after saving the Doctor from the Great Intelligence. (TV: The Rings of Akhaten, Hide, Clara and the TARDIS, The Name of the Doctor) Previously only the Doctor had been able to do this. (TV: Forest of the Dead, Day of the Moon)
 * The Eleventh Doctor continues to wear Amy Pond's reading glasses. (TV: The Angels Take Manhattan, The Snowmen, The Rings of Akhaten)
 * Kate asks Osgood to tell "Malcolm" to change the batteries in the robotic ravens outside the Tower of London, and later calls Malcolm to request some of her father's files. This could be a reference to Malcolm Taylor, a UNIT scientist the Tenth Doctor met during his time on San Helios with the Swarm. (TV: Planet of the Dead) This also refers back to an earlier comment Kate made about having "ravens of death" to Amy Pond. (TV The Power of Three)
 * The Doctor uses the phone on the outside of the TARDIS, despite previously stating that it was not actually a real phone. (TV: The Empty Child, The Bells of Saint John) He later told Handles to remind him to rewire it back through the console. (TV: The Time of the Doctor)
 * Romana has said previously that, on Gallifrey, paintings are done by computers. (TV: City of Death)
 * The Time Lords in the War Room mention that the High Council are holding an emergency session, and that they have plans of their own. This session is presumably the one depicted in (TV: The End of Time), in which the Lord President planned to use the Master to allow Gallifrey and the Time Lords to escape the time lock.
 * The War Doctor's statement "No more" in relation to the Time War was previously said by Dalek Caan in Journey's End.
 * Upon viewing the Moment's controls, the War Doctor asks "Why is there never a big red button?", which the Moment later modifies herself to incorporate. The Tenth Doctor previously mentioned he could never resist pressing a "great, big, threatening button." (TV: The Christmas Invasion)
 * The Moment, like the TARDIS, is confused by difference between the past and the future. (TV: The Doctor's Wife)
 * The Tenth Doctor's wedding with Elizabeth I is shown. (TV: The Shakespeare Code, The End of Time, The Beast Below, Amy's Choice, The Wedding of River Song) Presumably, the fact that he indicates no intention of returning to his new wife is what results in her antagonism towards him when they next met thirty years later in 1599. (TV: The Shakespeare Code)
 * A painting of the Tenth Doctor wearing Elizabethan clothing, including a large collar, is shown alongside a portrait of Elizabeth I's. Although Elizabeth I married the Tenth Doctor, she met both the Tenth and Eleventh Doctors. While investigating a time anomaly in Victorian London, there was a statue of the Eleventh Doctor in Elizabethan clothing. Eleven said he thought that Elizabeth I had made him wear the clothing, which he thought was for private portrait. (GAME: The Eternity Clock)
 * The Tenth Doctor's reference to his wedding in The End of Time places his appearance here somewhere in the gap between The Waters of Mars and The End of Time, during which he traveled around for a bit to try to avoid his fate. He tells a rabbit he is 904 years old here, while in The End of Time he states he is 906. This suggests that, like the Eleventh Doctor's 200-year farewell tour but much shorter, the gap lasted several years.
 * The Fourth Doctor and UNIT previously fought the Zygons. (TV: Terror of the Zygons)
 * The Tenth Doctor previously encountered the Zygons in the Lake District in September 1909 in the company of Martha Jones. (PROSE: Sting of the Zygons) The Eleventh Doctor encountered them when he took Amy Pond and Rory Williams on an anniversary trip to the Savoy Hotel in 1890. (TV: The Power of Three)
 * While the Doctor is entranced by a fez, the painting that Clara stops to admire in the Under Gallery shows the latest variant of the Cybermen (TV: Nightmare in Silver)
 * The Tenth and Eleventh Doctors try "Reversing the polarity", a catchphrase his third incarnation used.
 * The War Doctor doesn't recognise his Tenth and Eleventh incarnations, believing them to be companions. The Fifth Doctor didn't recognise the Tenth, and believed him to be a fan. (TV: Time Crash)
 * The War Doctor calls the Eleventh Doctor's bow-tie a "dicky bow", criticising the fashion choice as Amy Pond and Rory Williams had before. (TV: The Eleventh Hour, Amy's Choice, The Lodger)
 * When Clara sees the Doctors together for the first time, she exclaims that "there's three of them" to which Kate replies, "We have a precedent for that." (TV: The Three Doctors)
 * Kate Stewart asks for one of her father's files; she says it may be filed under the 70s or the 80s "depending on the dating protocol", a clear reference to the UNIT dating controversy.
 * When Kate realizes there are multiple doctors, she asks for a file code named Cromer, which is a reference to her father believing the anti-matter universe to be Cromer. (TV: The Three Doctors)
 * When surrounded by Queen Elizabeth I's soldiers, the War Doctor asks the Tenth Doctor and the Eleventh Doctor if they were going to "assemble a cabinet at them". The phrase "build a cabinet" was previously used by River Song in relation to the sonic screwdriver, and "build some shelves" was similarly used by Jack Harkness. (TV: The Doctor Dances, Day of the Moon) Ironically the three Doctors later used their screwdrivers offensively to blast a Dalek back with a force field, destroying it.
 * The War Doctor gripes at his future incarnations for brandishing their Sonic Screwdrivers as if they were water pistols. The Tenth Doctor actually used a water pistol against the Pyroviles. (TV: The Fires of Pompeii)
 * The Eleventh Doctor calls to Clara through a wormhole, referring to her as the "Wicked Witch of the Well." Hila Tacorien was previously referred to by this name due to the wormhole in Caliburn House. (TV: Hide)
 * The Black Archive of UNIT appears. (TV: Enemy of the Bane, COMIC: Don't Step on the Grass)
 * The War Doctor and his successors were haunted over the 2.47 billion children of Gallifrey they killed by using the Moment. When the Eleventh Doctor took Amy Pond to Starship UK, he was moved by the sound of children crying. (TV: The Beast Below)
 * The Tenth Doctor asks the Eleventh where he's going, to which the Eleventh Doctor replies, "Spoilers." (TV: Silence in the Library / Forest of the Dead et al.)
 * Kate encounters an alien which duplicates her appearance and impersonates her. This had previously happened when a Dæmon statue had taken her shape. (HOMEVID: Dæmos Rising)
 * When a Zygon is killed discuised as another creater, it keeps the form of that creater. (HOMEVID: Zygon: When Being You Just Isn't Enough)
 * When the War Doctor enters the Tenth Doctor's TARDIS he says he really "let it go"; the Eleventh comments that this was his "grunge phase". When the Eleventh Doctor enters the Tenth Doctor's TARDIS Console Room he loads his own 'desktop' changing the TARDIS design. The Tenth declares he doesn't like it. Both of these reference the Second Doctor when he saw the Third Doctor's TARDIS (TV: The Three Doctors) and the redesigned UNIT HQ (TV: The Five Doctors), and the Eleventh Doctor when visited Craig Owens in his new home. (TV: Closing Time) It also refers to the Fifth Doctor's disgust with the Tenth Doctor "changing the desktop theme" when they accidentally ran their TARDISes into each other. (TV: Time Crash) The TARDIS told the Doctor that she archived past and future versions of the console room in The Doctor's Wife. While changing the theme the Console Room briefly features a hybrid of the Tenth Doctor's Console Room and the original TARDIS roundel design which is later seen to be the War Doctor's TARDIS theme.
 * A pair of red heels identical to the ones River wore on the Byzantium are seen in the Black Archive. (TV: The Time of Angels)
 * Amy's Pinwheel and Torchwood magnetic clamps are also seen in the Black Archive. (TV: Doomsday, The Eleventh Hour et al.)
 * The Tenth Doctor, when returning to his own timeline, tells the Eleventh Doctor that he is glad his "future is in safe hands." These are the exact same words the First Doctor says to the Fifth Doctor upon the former's departure. (TV: The Five Doctors)
 * The security protocol for the Black Archive involves a self-destruct triggered through nuclear warhead detonation at the sacrifice of all human life in the blast radius. A similar nuclear option against alien attack was developed by UNIT in the form of the Osterhagen Project and was also nearly activated. (TV: The Stolen Earth, Journey's End)
 * When the Doctor calls from the TARDIS phone, his telephone number once again is 07700900461, as it was in (TV: The Stolen Earth).
 * The Eleventh Doctor refers to his fate on Trenzalore. (TV: The Wedding of River Song, The Name of the Doctor, TV: The Time of the Doctor)
 * The Tenth Doctor, upon hearing of Trenzalore, says they need to take a different direction as "I don't want to go." His successor notes that "He always says that", as it was his last words before his regeneration. A small sampling of the musical strings in "Vale Decem" can also be heard as he departs, the incidental music for his final moments. (TV: The End of Time)
 * Prior to regenerating, the War Doctor comments that his body is "wearing a bit thin", repeating the line spoken by the First Doctor immediately prior to his regeneration into the Second Doctor. (TV: The Tenth Planet). He then hopes that "the ears are a bit less conspicuous this time"; the Ninth Doctor makes a reference to the size of his ears in Rose, which presumably takes places shortly after from the Doctor's point of view.
 * For the War Doctor, the Tenth Doctor and the Eleventh Doctor, the events of this episode take place shortly before they regenerate. The War Doctor is seen regenerating at the end of the episode. Chronological evidence indicates the Tenth Doctor experiences this adventure during the period when he was on a "farewell tour", two years before his final adventure as depicted in "The End of Time". Similarly, the Eleventh Doctor would regenerate in his next televised adventure, "The Time of the Doctor". Interestingly enough, all three Doctors are living under the shadow of a prediction or expectation of their own death.
 * An eccentric, Doctor-like character who went by the name "the Curator" appeared in the story Summer Falls, which was marketed as being written by Amelia Williams.

Home release
The Day of the Doctor was released on region 2 DVD, and region B 3D Blu-ray on 2nd December, 2013. The Night of the Doctor was also included on both versions.