where does central time zone start in kentucky

In Kentucky, the Central Time Zone starts at the western border of the state. The dividing line between the Central Time Zone (CT) and the Eastern Time Zone (ET) generally runs along the counties bordering the Mississippi River. Therefore, counties such as Ballard, Carlisle, Fulton, and Hickman in western Kentucky observe Central Time. Eastern Kentucky, including cities like Louisville and Lexington, is in the Eastern Time Zone.