I don’t know if they still do but at one time a small area of Alabama known as “The Valley” was on Eastern time.
Grew up in Phenix City/Russell County between 1955-'65. It was on EST then.
Wikipedia - Phenix City
Although Alabama is legally in the Central Time Zone, Phenix City's proximity to the larger city of Columbus, Georgia causes Phenix City (including its municipal government) and areas within a 10-15 mile radius (such as Smiths Station) to observe Eastern Time on a de facto basis.