1965

March

 * The Doctor's TARDIS materialises in Wimbleton Common, London, so that Steven Taylor can go on with his own life. He comes across Dodo Chaplet, who says she has had an accident. (DW: The Massacre of St Bartholomew's Eve) The Doctor, Dodo and Steven travel to Manhattan, New York City where they meet the alien Latter-Day Pantheon. (PDA: Salvation)

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

Summer

 * Ian Chesterton and Barbara Wright arrive back in London aboard the DARDIS, which self-destructs soon after. Boarding a bus, they contemplate how they will pick up their previous, "normal" lives again, having arrived at a point two years after joining the Doctor on his travels. (DW: The Chase)

December

 * 25 - The TARDIS materialises in the yard of a police station in Liverpool, its scanner malfunctioning. After some initial fears that the polluted atmosphere of the 20th century might harm his companions Steven Taylor and Sara Kingdom, who grew up in the purified atmospheres of the future, and some trouble with the local police, the Doctor repairs the malfunctioning scanner and the TARDIS departs. (DW: The Daleks' Master Plan)
 * 31 - After leaving the Monk on Tigus, the TARDIS materializes in Trafalgar Square duing the New Year's Eve celebrations. (DW: The Daleks' Master Plan)

January

 * 02 - First broadcast of "The Powerful Enemy" (The Rescue Episode 1). First appearance of Maureen O'Brien as Vicki.
 * 09 - First broadcast of "Desperate Measures" (The Rescue Episode 2). With this episode, Maureen O'Brien's Vicki accepts the Doctor's offer to travel in the TARDIS and establishes the tradition of the series periodically introducing new companions.
 * 16 - First broadcast of "The Slave Traders" (The Romans Episode 1).
 * 23 - First broadcast of "All Roads Lead to Rome" (The Romans Episode 2).
 * Debut of The Daleks comic strip in TV21.
 * 30 - First broadcast of "Conspiracy" (The Romans Episode 3).

February

 * 06 - First broadcast of "Inferno" (The Romans Episode 4).
 * 13 - The third Radio Times Doctor Who cover features the upcoming The Web Planet with a photo of the Zarbi and the Vortis landscape.
 * First broadcast of "The Web Planet" (The Web Planet Episode 1). Though it only got 53% in Audience Appreciation figures, this episode brought 13.5 million viewers, which as of December 2008 remains the highest single viewership of any Doctor Who episode ever.
 * 20 - First broadcast of "The Zarbi", (The Web Planet Episode 2).
 * 27 - First broadcast of "Escape to Danger" (The Web Planet Episode 3).

March

 * 06 - First broadcast of "Crater of Needles", (The Web Planet Episode 4).
 * 13 - First broadcast of "Invasion" (The Web Planet Episode 5)
 * 20 - First broadcast of "The Centre" First Broadcast (The Web Planet Episode 6).
 * 27 - First broadcast of "The Lion" First Broadcast (The Crusade Episode 1).

April

 * 03 - First broadcast of "The Knight of Jaffa" First Broadcast (The Crusade Episode 2).
 * 10 - First broadcast of "The Wheel of Fortune" First Broadcast (The Crusade Episode 3).
 * 17 - First broadcast of "The Warlords" First Broadcast (The Crusade Episode 4).
 * 24 - First broadcast of "The Space Museum" First Broadcast (The Space Museum Episode 1).

May

 * 01 - First broadcast of "The Dimensions of Time" (The Space Museum Episode 2).
 * 08 - First broadcast of "The Search" (The Space Museum Episode 3).
 * 15 - First broadcast of "The Final Phase" (The Space Museum Episode 4).
 * 22 - First broadcast of "The Executioners" (The Chase Episode 1).
 * 29 - "The Death of Time" First Broadcast (The Chase Episode 2).

June

 * 05 - First broadcast of "Flight Through Eternity" (The Chase Episode 3). Peter Purves appears on the series for the first time, but not as Steven Taylor.
 * 12 - First broadcast of "Journey Into Terror" (The Chase Episode 4).
 * 19 - First broadcast of "The Death of Doctor Who" First Broadcast (The Chase Episode 5).
 * 25 - Dr. Who and the Daleks, a colour feature film based on the Doctor Who television serial The Daleks, is released
 * 26 - First broadcast of "The Planet of Decision" (The Chase Episode 6). Despite having appeared as a different character in the same serial only a few weeks earlier, Peter Purves joins the series playing Steven Taylor. Meanwhile, both William Russell and Jacqueline Hill leave the series with this episode.

July

 * 03 - First broadcast of "The Watcher" (The Time Meddler Episode 1). As of this episode, all of the original cast, save William Hartnell as the Doctor have moved on to other projects.
 * 10 - First broadcast of "The Meddling Monk" (The Time Meddler Episode 2).
 * 17 - First broadcast of "The Battle of Wits" (The Time Meddler Episode 3).
 * 24 - First broadcast of "Checkmate" (The Time Meddler Episode 4), the final episode of Season 2. This is followed by the show's first substantial season break as it takes the rest of the summer off.

September

 * 11 - Season 3 commences with the broadcast of "Four Hundred Dawns" (Galaxy 4 Episode 1).
 * 16 - Doctor Who and the Zarbi by Bill Strutton, the second novelisation of a Doctor Who serial (The Web Planet), is first published by Frederick Muller.
 * 18 - Broadcast of "Trap of Steel" (Galaxy 4 Episode 2).
 * 25 - Broadcast of "Air Lock" (Galaxy 4 Episode 3).

October

 * 02 - First broadcast of "The Exploding Planet" (Galaxy 4 Episode 4).
 * 09 - Self-contained episode Mission to the Unknown, the last produced by original Producer Verity Lambert airs. This is the only "serial" in which the Doctor does not appear.
 * 16 - "Temple of Secrets", the first from new Producer John Wiles and episode 1 of The Myth Makers airs.
 * 23 - Broadcast of "Small Profit, Quick Return" (The Myth Makers Episode 2).
 * 30 - Broadcast of "Death of a Spy", (The Myth Makers Episode 3.

November

 * 06 - Broadcast of "Horse of Destruction" (The Myth Makers Episode 4). Maureen O'Brien leaves the series with this episode, which introduces Adrienne Hill as short-lived companion Katarina.
 * 13 - Broadcast of "The Nightmare Begins" (The Daleks' Master Plan Episode 1). Nicholas Courtney makes his first appearance on Doctor Who as Bret Vyon.
 * 20 - First broadcast of "Day of Armageddon" (The Daleks' Master Plan Episode 2).
 * 27 - Broadcast of "Devil's Planet" (The Daleks' Master Plan Episode 3)

December

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

Unknown dates

 * Armada Books publishes the first paperback edition of the first Doctor Who novelisation, Dr. Who in an Exciting Adventure with the Daleks.
 * Doctor Who and the Crusaders published. This is the third and last of a trilogy of novelisations published by Frederick Muller. The next new novelisation would not be published until Doctor Who and the Auton Invasion established the Target Novelisation line in early 1974.
 * Publication of The Dalek Outer Space Book by David Whitaker and Terry Nation.
 * Publication of The Dalek Pocketbook and Space Travellers Guide by Terry Nation.