The Devidian system was a star system located in the Marrab sector of the galaxy's Alpha or Beta Quadrants. It was the location of a planetary system, the orbit of which included the second planet, Devidia II. (TNG episode: "Time's Arrow")

The system was called the Devidia system in "Time's Arrow", but was called the Devidian system in TOS comic: "Split Infinities" and DTI novel: Watching the Clock.
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