Hello how may I help you? Hi, I have a question about time zones. I can only calculate the different times between the zones, I can't explain how they work. How many time zones are in the United States? 6. What are their names? Easter, Central, Mountain, Pacific, Alaskan, and Hawaiin. Which one time zone is Nashville Tennessee located in? Central. Great thank you! You are welcome. Have a great day. Have a great day as well.