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423 Area code. 423 is an area code located in the state of Tennessee, US. The largest city it serves is Chattanooga. Location, time zone and map of the 423 area code
Find 423 area code details including city, time zone, and map. Lookup area code 423 phone number, name, and location.
The boundary between 423 and 615 roughly followed the line between the Eastern and Central time zones; generally, Tennessee's share of the Eastern Time Zone was in 423. As a result, the state's three area codes were roughly coextensive with the traditional Grand Divisions of Tennessee.
Area Code 423 covers 2 Timezones including Central (GMT -06:00) and Eastern (GMT -05:00). The table above displays the current local time for each time zone. Please remember that while the majority of this region may observe Daylight Saving Time, small localized areas may not.
Current local time in Chattanooga, Hamilton County, Tennessee, USA, Eastern Time Zone. Check official timezones, exact actual time and daylight savings time conversion dates in 2024 for Chattanooga, TN, United States of America - fall time change 2024 - DST to Eastern Standard Time.