Which one of these four US states does not have multiple time zones?
New Mexico is wholly in Mountain time zone. The other states' time zones are as follows.
Tennessee
• East Tennessee: Eastern
• Middle and West: Central
Florida
• Peninsula and 'Big Bend' region: Eastern
• Panhandle west of the Apalachicola River: Central
Idaho
• north of Salmon River: Pacific
• remainder: Mountain
More Info:
en.wikipedia.org