The Tennessee boundary line between the Central and Eastern time zones follows the eastern borders of Pickett, Fentress, Cumberland, Bledsoe, Sequatchie and Marion counties.

This is because Tennessee is separated into two different time zones. It can get a bit confusing when you are driving in the Volunteer State. (Take it from someone who knows.) ...

The Tennessee boundary line between the Central and Eastern time zones follows the eastern borders of Pickett, Fentress, Cumberland, Bledsoe, Sequatchie and Marion counties.