A local year or revolution was the term given to the orbital period of an astronomical object. The local year on Adari was 409 standard days long.
The Infinite Empire's chronological circuitry, which could be installed into Rakatan guardian droids, could detect how many revolutions had taken place and were used as a dating device. On Dantooine, the Overseer had served as a Rakatan guardian droid for ten revolutions by the time of the during the Jedi Civil War. As Bastila Shan confronted the droid in 3956 BBY, she realized that ten revolutions corresponded to 20,000 years.
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