1965

At some point in 1965, the British government was contacted by an alien race dubbed the 456. They demanded a dozen children in exchange for an anti-virus to an influenza outbreak that would otherwise killed millions. Jack Harkness of the Torchwood Institute was ordered to deliver a busload of children from an orphanage in Scotland. One child, Clem McDonald, escaped and ended up on the run, destined to spend the next forty-five years in asylums. With the children delivered, the anti-virus was provided and the flu outbreak was quelled. (TV: Children of Earth: Day One, Children of Earth: Day Four)

March

 * The First Doctor's TARDIS materialised in Wimbledon Common, London so Steven Taylor could go on with his own life. He came across Dodo Chaplet, who said she had witnessed a road accident. (TV: The Massacre of St Bartholomew's Eve) Immediately afterwards, the First Doctor, Dodo and Steven travelled to Manhattan, New York City where they met the alien Latter-Day Pantheon. (PROSE: Salvation)

April

 * Further events in New York City concerning the Latter-Day Pantheon and TARDIS crew. (PROSE: Salvation)

June

 * 26 - Ian Chesterton and Barbara Wright arrived back in London aboard the Dalek time machine, which they set to self-destruct soon after. Boarding a bus, they contemplated how they would pick up their previous, "normal" lives again, having arrived two years after joining the First Doctor on his travels. (TV: The Chase) The Doctor gave them an envelope of British notes and coins which included a twenty pence coin from 1982. (PROSE: The Time Travellers)

November

 * An alien race designated the 456 came to Earth to offer the human race the anti-virus to a new strain of Spanish influenza which would wipe out millions of lives, in exchange for twelve children, to be harvested for certain chemicals that gave the 456 an equivalent of a high from Earth narcotics. The British government and the Torchwood Institute chose Clement McDonald and eleven others from the Holly Tree Lodge orphanage, believing that that no one would miss them, and so kept the act a secret. After arriving in a secluded location, Captain Jack Harkness drove them to a white light, and guided them from there. (TV: Children of Earth: Day Four) Clem, however, managed to escape. He was chased for several miles until the 456 decided to stop. (TV: Children of Earth: Day One)
 * 9 - The Eleventh Doctor, Amy Pond and Rory Williams visited New York City. (AUDIO: Blackout)

December

 * 25 - The Doctor's TARDIS materialised in the yard of a police station in Liverpool, its scanner malfunctioning. After some initial fears the polluted atmosphere of the 20th century might harm his companions Steven Taylor and Sara Kingdom, who had grown up in the clean air of the future, and some trouble with the local police, the First Doctor repaired the scanner and the TARDIS departed. (TV: The Daleks' Master Plan)
 * 31 - After leaving the Monk on Tigus, the TARDIS materialised in Trafalgar Square during the New Year's Eve celebrations. (TV: The Daleks' Master Plan)

Unknown dates

 * The Sixth Doctor and Melanie Bush visited Salford, Manchester where they encountered the Wishing Beast for the first time in its personal timeline but the second time in theirs. (AUDIO: The Vanity Box)

Alternative timeline

 * In an alternative timeline in which Nazi Germany won World War II as a result of the Seventh Doctor and Ace accidentally leaving laser technology in Colditz Castle in October 1944, Elizabeth Klein travelled back in time to Colditz during that incident using the Doctor's TARDIS. She was assisted in making the TARDIS operational by a fellow scientist named Johann Schmidt, who was in actuality an alternative version of the Eighth Doctor. Schmidt fabricated a "flight log" for the TARDIS to allow Klein to pilot the ship back to any of its recent destinations and manipulated her into travelling to 1944 on the pretext of retrieving the Seventh Doctor so that he could teach her to pilot the TARDIS. Her lover Major Jonas Faber saw through Schmidt's trickery but was too late as Klein had already decided to disobey his orders and make the trip into the past. She left her lover behind, promising to make him Führer by her efforts. Unfortunately for Klein, her arrival in October 1944 alerted the Seventh Doctor to the impending alteration of history and he and Ace were able to prevent it. Klein was stranded in the proper timeline. Believing her mistake had destroyed the correct version of history, she vowed to get the TARDIS back and restore her world. (AUDIO: Colditz, AUDIO: Klein's Story)

January

 * 02 - "The Powerful Enemy" (TV: The Rescue Episode 1) was first broadcast. This was the first appearance of Maureen O'Brien as Vicki.
 * 09 - "Desperate Measures" (TV: The Rescue Episode 2) was first broadcast. With this episode, Vicki accepted the First Doctor's offer to travel in the TARDIS and established the tradition of the series periodically introducing new companions.
 * 16 - "The Slave Traders" (TV: The Romans Episode 1) was first broadcast.
 * 16 - The final part of The Klepton Parasites was released.
 * 23 - "All Roads Lead to Rome" (TV: The Romans Episode 2) was first broadcast.
 * 23 - The first part of The Therovian Quest was released.
 * 23 - This was the debut of The Daleks comic strip in TV Century 21.
 * 30 - "Conspiracy" (TV: The Romans Episode 3) was first broadcast.

February

 * 06 - "Inferno" (TV: The Romans Episode 4) was first broadcast.
 * 13 - "The Web Planet" (TV: The Web Planet Episode 1) was first broadcast. Though it only got 53% in figures, this episode brought 13.5 million viewers, which as of Fall 2009 remains the highest single viewership of any Doctor Who episode ever.
 * 13 - The third Radio Times Doctor Who cover featured the upcoming TV: The Web Planet with a photo of the Zarbi and the Vortis landscape.
 * 20 - "The Zarbi", (TV: The Web Planet Episode 2) was first broadcast.
 * 27 - "Escape to Danger" (TV: The Web Planet Episode 3) was first broadcast.
 * 27 - The final part of The Therovian Quest was released.
 * The Earthlings released the single "Landing of the Daleks"/"March of the Robots" on Parlophone Records. The BBC banned the single due to the fact that "Landing of the Daleks" included a Morse code message – S.O.S., S.O.S., Daleks have landed – and it was felt the sound of the international distress signal S.O.S. might mislead shipping if radio operators should hear it. The record was reissued with the offending sound scrambled.

March

 * 06 - "Crater of Needles" (TV: The Web Planet Episode 4) was first broadcast.
 * 07 - Actress Victoria Alcock was born.
 * 07 - The first part of COMIC: The Hijackers of Thrax was released.
 * 13 - "Invasion" (TV: The Web Planet Episode 5) was first broadcast.
 * 20 - "The Centre" (TV: The Web Planet Episode 6) was first broadcast.
 * 20 - The final part of COMIC: The Hijackers of Thrax was released.
 * 27 - "The Lion" (TV: The Crusade Episode 1) was first broadcast.
 * 27 - The first part of On the Web Planet was released.

April

 * 03 - "The Knight of Jaffa" (TV: The Crusade Episode 2) was first broadcast.
 * 10 - "The Wheel of Fortune" (TV: The Crusade Episode 3) was first broadcast.
 * 17 - "The Warlords" (TV: The Crusade Episode 4) was first broadcast.
 * 18 - Actor Camille Coduri was born.
 * 24 - "The Space Museum" (TV: The Space Museum Episode 1) was first broadcast.

May

 * 01 - "The Dimensions of Time" (TV: The Space Museum Episode 2) was first broadcast.
 * 01 - The last part of COMIC: On the Web Planet was released.
 * 08 - "The Search" (TV: The Space Museum Episode 3) was first broadcast.
 * 08 - The first part of COMIC: The Gyros Injustice was released.
 * 15 - "The Final Phase" (TV: The Space Museum Episode 4) was first broadcast.
 * 22 - "The Executioners" (TV: The Chase Episode 1) was first broadcast.
 * 22 - Incidental music composer John Sponsler was born.
 * 29 - "The Death of Time" (TV: The Chase Episode 2) was first broadcast.
 * 29 - Dursley McLinden (Mike Smith in TV: Remembrance of the Daleks) was born.

June

 * 05 - "Flight Through Eternity" (TV: The Chase Episode 3) was first broadcast. Peter Purves appeared on the series for the first time, but not as Steven Taylor.
 * 12 - "Journey Into Terror" (TV: The Chase Episode 4) was first broadcast.
 * 12 - The last part of COMIC: The Gyros Injustice was released.
 * 17 - The Dalek Painting Book was published by Souvenir Press and Panther Books. A massive 350,000 copies were printed.
 * 19 - "The Death of Doctor Who" (TV: The Chase Episode 5) was first broadcast. This was the first use of the name "Doctor Who" in an episode title.
 * 19 - The first part of COMIC: Challenge of the Piper was released.
 * 25 - Dr. Who and the Daleks, a colour feature film loosely based upon TV: The Daleks, was released, featuring the debut of Peter Cushing as Dr. Who.
 * 26 - "The Planet of Decision" (TV: The Chase Episode 6) was first broadcast. Despite having appeared as a different character in the same serial only a few weeks earlier, Peter Purves joined the series playing Steven Taylor. Meanwhile, both William Russell and Jacqueline Hill left the series with this episode, leaving William Hartnell the sole original cast member from 1963.

July

 * The pop single "Who's Who", performed by Roberta Tovey, was released on Polydor. Tovey was a star of the recently released film Dr. Who and the Daleks.
 * Jack Dorsey and His Orchestra released the single "Dance of the Daleks" on Polydor.
 * 03 - "The Watcher" (TV: The Time Meddler Episode 1) was first broadcast.
 * 10 - "The Meddling Monk" (TV: The Time Meddler Episode 2) was first broadcast.
 * 17 - "The Battle of Wits" (TV: The Time Meddler Episode 3) was first broadcast.
 * 17 - The last part of COMIC: Challenge of the Piper was released.
 * 24 - "Checkmate" (TV: The Time Meddler Episode 4), the final episode of Season 2, was first broadcast. This was followed by the show's first substantial season break as it took the rest of the summer off.
 * 24 - The first part of COMIC: Moon Landing was released.
 * 24 - Actress Julie Graham was born.

August

 * Paint and Draw the Film of Dr. Who and the Daleks was published by Souvenir Press. Again, some 350,000 copies were printed.
 * 07 - The last part of COMIC: Moon Landing was released.
 * 10 - Actress Claudia Christian was born.
 * 14 - The first part of COMIC: Time in Reverse was released.
 * 28 - The final part of COMIC: Time in Reverse was released.

September

 * 04 - The first part of COMIC: Lizardworld was released.
 * 11 - Season 3 commenced with the first broadcast of "Four Hundred Dawns" (TV: Galaxy 4 Episode 1).
 * 13 - Actor Eric Potts was born.
 * 16 - PROSE: Doctor Who and the Zarbi by Bill Strutton, the second novelisation of a Doctor Who serial (TV: The Web Planet), was first published by Frederick Muller.
 * 18 - "Trap of Steel" (TV: Galaxy 4 Episode 2) was first broadcast.
 * 25 - "Air Lock" (TV: Galaxy 4 Episode 3) was first broadcast.
 * 25 - The final part of COMIC: Lizardworld was released.
 * The first Doctor Who annual, Doctor Who Annual 1966, was published by World Distributors, Ltd.

October

 * 02 - "The Exploding Planet" (TV: Galaxy 4 Episode 4) was first broadcast.
 * 02 - The first part of COMIC: The Ordeals of Demeter was released.
 * 07 - The Dalek Pocketbook and Space Travellers Guide was first published.
 * 09 - TV: Mission to the Unknown was first broadcast. This was the only "serial" in which the Doctor or his companions did not appear (although for contractual reasons, William Hartnell was still credited on-screen), and was the only single-episode serial produced in the twenty-five-minute format. It was the last episode produced by original producer Verity Lambert.
 * 11 - The Dalek World was first published.
 * 12 - Writer Dan Abnett was born.
 * 16 - "Temple of Secrets" (TV: The Myth Makers, Episode 1) was first broadcast. This was the first episode produced by John Wiles.
 * 21 - The Avengers episode "Death at Bargain Prices" aired in the UK for the first time. This episode of the series created by Sydney Newman included a cameo appearance by several Daleks — in toy form in a department store.
 * 23 - "Small Profit, Quick Return" (TV: The Myth Makers Episode 2) was first broadcast.
 * 23 - The final part of COMIC: The Ordeals of Demeter was released.
 * 30 - "Death of a Spy" (TV: The Myth Makers Episode 3) was first broadcast.
 * 30 - The first part of COMIC: Enter: The Go-Ray was released.

November

 * 06 - "Horse of Destruction" (TV: The Myth Makers Episode 4) was first broadcast. Maureen O'Brien left the series with this episode, which introduced Adrienne Hill as short-lived companion Katarina.
 * 13 - "The Nightmare Begins" (TV: The Daleks' Master Plan Episode 1) was first broadcast. Nicholas Courtney made his first appearance on Doctor Who, playing Bret Vyon.
 * 16 - Actor Mark Benton was born.
 * 20 - "Day of Armageddon" (TV: The Daleks' Master Plan Episode 2) was first broadcast.
 * 21 - Actor Alexander Siddig was born.
 * 21 - The final part of COMIC: Enter: The Go-Ray was released.
 * 24 - Actress Shirley Henderson was born.
 * 27 - "Devil's Planet" (TV: The Daleks' Master Plan Episode 3) was first broadcast.

December

 * 04 - "The Traitors" (TV: The Daleks' Master Plan Episode 4) was first broadcast. Adrienne Hill made her final appearance as Katarina as her character became the first companion to be killed off. Jean Marsh, who previously appeared in TV: The Crusade, made her debut as single-story companion Sara Kingdom.
 * 11 - "Counter Plot" (TV: The Daleks' Master Plan Episode 5) was first broadcast.
 * 18 - "Coronas of the Sun" (TV: The Daleks' Master Plan Episode 6) was first broadcast.
 * 21 - The stage play The Curse of the Daleks premiered at Wyndham's Theatre in London. The play ran into 1966.
 * 25 - "The Feast of Steven" (TV: The Daleks' Master Plan Episode 7) was first broadcast. This was the first Christmas-themed episode of Doctor Who and was a standalone story not directly connected to the ongoing story arc. It concluded with an infamous moment where William Hartnell, in character as the First Doctor, broke the fourth wall to wish viewers a Merry Christmas. The next Christmas-themed Doctor Who episode did not air until TV: The Unquiet Dead in 2005, while a tradition of Christmas Day special episodes began with TV: The Christmas Invasion later in 2005.
 * 25 - The first part of COMIC: A Christmas Story was released.

Unknown dates

 * Armada Books published the first paperback edition of the first Doctor Who novelisation: PROSE: Dr. Who in an Exciting Adventure with the Daleks.
 * PROSE: Doctor Who and the Crusaders was first published, adapting TV: The Crusade. This was the third and last of a trilogy of novelisations published by Frederick Muller. The next new novelisation was not published until PROSE: Doctor Who and the Auton Invasion established the Target novelisation line in early 1974.
 * Actress Claire Skinner was born.
 * Actor Martin Ball was born.