Time zone
From Tardis Wiki, the free Doctor Who reference
A time zone was an area of specific time, utilised primarily as a means of keeping time via clocks. It was also used as a term when discussing time travel to specific destinations.
The Malus, while creating psychic-projections from the past, was able to directly connect two time zones, allowing Will Chandler to come from the 16th century to the 20th century. (TV: The Awakening)
Upon being activated by Davros, the Hand of Omega travelled to Skaro's time zone and caused its sun to go nova. (TV: Remembrance of the Daleks)
