Temporal Orbit
A TARDIS which has materialized can be shifted into Temporal Orbit by bypassing the Time-Space Rationalizer.. This keeps a TARDIS traveling back through time at the same rate that time is passing outside
- a sort of a temporal free fall.
As a result time outside a TARDIS appears to be "frozen." The operator could spend weeks or years inside his TARDIS, and when he leaves the Orbit, he will find that no time has passed outside his TARDIS.