15 was a number.
Susan Foreman was fifteen years old when Ian Chesterton and Barbara Wright first met her grandfather. (TV: An Unearthly Child [+]Loading...["An Unearthly Child (TV story)"])
The Archangel Network was composed of fifteen satellites orbiting the Earth. (TV: The Sound of Drums [+]Loading...["The Sound of Drums (TV story)"]/Last of the Time Lords [+]Loading...["Last of the Time Lords (TV story)"])
When the Cybermen attempting to capture the moonbase first detected the relief ship from Earth, their computer predicted it would land on the lunar surface in fifteen minutes. (TV: The Moonbase [+]Loading...["The Moonbase (TV story)"])
The interior of the Doctor's TARDIS decreased in size by fifteen centimetres following the Doctor's regeneration into his second incarnation. (PROSE: Invasion of the Cat-People [+]Loading...["Invasion of the Cat-People (novel)"])
Jim Hardwicke spent fifteen years trying to develop an anti-aging drug, during which he endured much ridicule from his colleagues. (PROSE: The Living Death [+]Loading...["The Living Death (short story)"])
On Red Rocket Rising, Tom Cardwell's bio-scan indicated that the Eighth Doctor's body temperature was fifteen degrees, which the Doctor attributed to the cold. (AUDIO: Blood of the Daleks [+]Loading...["Blood of the Daleks (audio story)"])
Of the 27 different species that the Twelfth Doctor identified as living in Trap Street, 15 were known for aggression. (TV: Face the Raven [+]Loading...["Face the Raven (TV story)"])
When Rose Tyler was fifteen years old, she was suspended from Jericho Street Comprehensive for three days after she convinced the choir to go on strike. (PROSE: Meet Rose [+]Loading...["Meet Rose (short story)"])
23 November (TV: Death in Heaven [+]Loading...["Death in Heaven (TV story)"]) 2001 marked Clara Oswald's fifteenth birthday. Less than a month earlier, she complained to her mother that she never let her do anything despite being "nearly fifteen". (PROSE: Clara Oswald and the Enchanted Forest [+]Loading...["Clara Oswald and the Enchanted Forest (short story)"])
People born in 2004 were fifteen years old by 2019. (PROSE: Time Lapse [+]Loading...["Time Lapse (short story)"])