Draxine

From Tardis Wiki, the free Doctor Who reference

Draxine was an Earth colony planet. It had one moon.

Zelonia was the main continent, and due to the planet's orbit was in a state of perpetual twilight. When the Eighth Doctor and Mary Shelley arrived on Draxine, the colony was in its tenth generation. The cities of Garrak and Stronghaven went to war, with Garrak ultimately being destroyed. (AUDIO: Army of Death)