Tennessee Time Zone Map

Tennessee has two time zones. East Tennessee is mostly in Eastern Time, including Knoxville, Chattanooga, Johnson City, Kingsport, Bristol, and Cleveland. These cities use EST in winter and EDT during daylight saving time.

Middle Tennessee and West Tennessee are in Central Time. Nashville, Memphis, Clarksville, Murfreesboro, Franklin, Jackson, and most western and central parts of the state use CST in winter and CDT during daylight saving time. In everyday scheduling, Knoxville and Chattanooga are usually one hour ahead of Nashville and Memphis.

The official Eastern/Central boundary is defined by federal regulation rather than a straight line across the state. It follows county lines from the Kentucky border through eastern Tennessee toward the Georgia border. For the legal boundary wording, see 49 CFR § 71.5.

Yes. Tennessee observes daylight saving time in both time zones. Eastern Tennessee moves from EST (UTC-5) to EDT (UTC-4), while Central Tennessee moves from CST (UTC-6) to CDT (UTC-5). The one-hour difference between the two regions remains the same.

The map boundary does not change when daylight saving time starts or ends. What changes is the UTC offset. If you are scheduling calls, travel, livestreams, delivery windows, or school events across Tennessee, use the city name instead of writing only "Tennessee time."

Tennessee is long from east to west, and its geography naturally connects different parts of the state with different regional time patterns. East Tennessee aligns more closely with Eastern Time cities and the Appalachian region. Middle and West Tennessee align with Central Time cities across the Mississippi Valley and the central United States.

This split matters most around the boundary area and for statewide schedules. Nashville-to-Knoxville trips, Memphis-to-Chattanooga calls, statewide sports broadcasts, and business meetings can all cross the one-hour line. A clear city-based time zone check prevents missed appointments and confusing calendar invites.