Time in Tennessee

Time in Tennessee, as in all U.S. states, is regulated by the United States Department of Transportation.

About 73 percent of the counties in the state of Tennessee lie in the Central Time Zone, mostly the western and middle grand divisions, while East Tennessee is mostly in the Eastern Time Zone except for three counties in that division.^[1]^[2]

Map of time zones in Tennesseee

All counties observe Daylight Saving Time.

Time zone boundary areas

Map of time zones following county lines in Tennesseee

Central boundary counties

Eastern boundary counties

IANA time zone database

The IANA time zone database identifier for Tennessee is America/New_York for the Eastern Time Zone portion and America/Chicago for the Central Time Zone portion.^[4]

References

^ 65 counties, totaling 30,796 sq. mi. are in CT, while 30 counties, totaling 11,347 sq. mi. are in ET, based on individual Wikipedia county articles as of 2012-05-21.
^ “Current time in Tennessee - Tennessee Time By County”. TimeTemperature.com. Retrieved 22 May 2013.
^ Rand McNally (2016). "Tennessee" (Map). The Road Atlas (2016 Walmart ed.). 1 in≈30 mi. Chicago: Rand McNally. pp. 94–95. ISBN 0-528-00626-6.
^ "Time Zone Database". www.iana.org.

[1] 65 counties, totaling 30,796 sq. mi. are in CT, while 30 counties, totaling 11,347 sq. mi. are in ET, based on individual Wikipedia county articles as of 2012-05-21.

[tn-time-2] “Current time in Tennessee - Tennessee Time By County”. TimeTemperature.com. Retrieved 22 May 2013.

[randtn1-3] Rand McNally (2016). "Tennessee" (Map). The Road Atlas (2016 Walmart ed.). 1 in≈30 mi. Chicago: Rand McNally. pp. 94–95. ISBN 0-528-00626-6.

[4] "Time Zone Database". www.iana.org.

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