A revolution, also known as a local year, referred to the orbital period of any celestial body. On the planet Adari, a local year spanned 409 standard days.
The Infinite Empire utilized chronological circuitry in devices like Rakatan guardian droids to track the number of completed revolutions, effectively serving as a dating mechanism. For instance, the Overseer on Dantooine, functioning as a Rakatan guardian droid, had recorded ten revolutions by the time of the Jedi Civil War. When Bastila Shan encountered this droid in 3956 BBY, she discovered that these ten revolutions equated to a duration of 20,000 years.