Time distortion

A time distortion, or temporal distortion, (AUDIO: Faustian) was a disturbance in space-time, sometimes caused by time travels, anachronisms or time fissures.

The theory of relativity suggested that, if one travelled faster than the speed of light, time distortion would cause them to arrive at their destination before they'd left their starting point. (PROSE: The Stones of Blood)

The Fourth Doctor hinted that the presence of time fissures caused time distortions, which humans described as haunted places. (TV: Image of the Fendahl)

A time traveller's diary observed that, every year on 29 January, many humans complained that January seemed longer than other months, which was suggested to be the result of temporal distortion. (PROSE: Time Traveller's Diary)

The Time Lords often used time distortions to project thoughts into other individuals across time. This was used once on Schmidt while the the Doctor was trapped on a German U-Boat. Commander Vansell used Schmidt to try and kill the Doctor. (AUDIO: The Sirens of Time)

Cyber-Technology could detect the Doctor's TARDIS by registering the time distortion it created. (TV: Attack of the Cybermen) The Sixth Doctor had a tracking device for time distortions, which he was able to track with. (TV: The Mark of the Rani)

Time distortion was present in the Humanian Era, the Sensorian Era, and the Sumaran Era, caused when the Eighth Doctor rescued Charley Pollard from the R101. (AUDIO: Neverland)

The Eleventh Doctor could not land the TARDIS in 1938 New York because of time distortions, due to massive presence of Weeping Angels. (TV: The Angels Take Manhattan)

The Twelfth Doctor was making and trying to use a "time distortion equaliser thingy" when he first met Grant in New York in the 1990s. As he explained to Grant, there was "a lot" of localised disruption there, which he blamed on himself, and that he intended for his device to calm it all down. He required the Hazandra to power the machine, but due to Grant swallowing the gem stone, he was unable to. (TV: The Return of Doctor Mysterio)

Behind the scenes
Time distortions in the Time Vortex act as obstacles in the first and last levels of the online game Doctor In A Dash where, as with all levels, the Doctor's TARDIS (the player) races against a Dalek flying saucer, a Judoon rocket, and a Slitheen craft to find a Space-Time Manipulator.