Gradient of time
From Tardis Wiki, the free Doctor Who reference
The planet Gallifrey immediately before being relocated to the pocket universe. (TV: The Day of the Doctor [+]Loading...["The Day of the Doctor (TV story)"])
Whilst the relocation of Gallifrey to a pocket universe took almost a day to complete, the Daleks perceived it as happening instantaneously as they were active in a slower gradient of time. (PROSE: The Day of the Doctor [+]Loading...["The Day of the Doctor (novelisation)"])
