So I got curious exactly how long the Clone Wars was. I know it was three years, but wanted to know the exact time. I looked up the pages of 22 BBY and 19 BBY on the Legends versions. Apparently, Order 66 happened EXACTLY 36 Months and 1 day, 3 years and one day, after the Battle of Geonosis. Revenge of the Sith is exactly 3 years after AoTC in Legends.