These 15 U.S. states have more than one time zone

Alaska • Time zones: Hawaii-Aleutian time and Alaska time • Alaska used to have four time zones. In 1983, however, the government consolidated the time zones to two: Hawaii-Aleutian time, which applies to the westernmost Aleutian Islands, and Alaska time for the rest of the state.

Arizona • Time zones: Mountain Standard Time all year (most of the state) and Mountain time (observing daylight saving time) on the Navajo Nation • Technically all of Arizona observes Mountain time, but whether that's Mountain Daylight Time or Mountain Standard Time may depend on the time of year and where you are. With the exception of the people of the Navajo Nation, Arizona does not observie daylight saving time and so is on Mountain Standard Time all year long. Arizona stopped using DST following passage of the Energy Policy Act of 2005, which gave each state or territory the right to opt out of daylight saving time. Arizona opted out because the state's climate is extremely hot, and extended daylight hours were not needed since it was assumed that people prefer to do activities in cooler evening temperatures.

Florida • Time zones: Central time (western panhandle) and Eastern time • In Florida, the Eastern and Central time zones divide along the Apalachicola River. Eastern time is called "fast time" and Central time is called "slow time."

Idaho • Time zones: Pacific time (northern panhandle) and Mountain time • One of the more visible indicators of the time zone border in Idaho is the Time Zone Bridge in Riggins that spans the Salmon River. The bridge divides the Pacific Time Zone from the Mountain Time Zone. Politicians have recently raised the possibility of shifting the northern part of the state to Mountain Time all year to be in the same time zone as the state capital of Boise.

Indiana • Time zones: Central time and Eastern time • For much of its history, all of Indiana was in the Central Time Zone. That changed in 1969, when the federal government established time zone boundaries that put six counties in the northwestern part of Indiana and six in the southwestern section in the Central Time Zone, with the remaining 80 counties in the Eastern Time Zone.

Kansas • Time zones: Mountain time (a small western notch) and Central time • In Kansas, all but four counties observe Central Time. Four counties on the state's western border are on Mountain time. The time zones were shifted frequently in western Kansas in the 20th century.

Kentucky • Time zones: Central time and Eastern time • About 60% of Kentucky observes Eastern Time. Louisville switched to Eastern time from Central in 1961.

Michigan • Time zones: Central time (a small portion of the Upper Peninsula bordering Wisconsin) and Eastern time • All of Michigan used to be on Central time but the shift to Eastern time, led by Detroit, occurred gradually over the 20th century. Now only four counties that border Wisconsin remain on Central time.

Nebraska • Time zones: Mountain time and Central time • The western section of the Cornhusker State, including all the counties in the state's panhandle, is in the Mountain Time Zone, while most of the state's population is in the Central Time Zone. Cherry County in the northern part of the state is divided by the Mountain and Central time zones.

Nevada • Time zones: Pacific Time and Mountain Time • Most of Nevada is on Pacific time, except for West Wendover on the eastern border, which observes Mountain Time. Gaming and tourism are essential to the economy of the town, which relies on customers from neighboring Utah. Town leaders thought that being in the same time zone as Utah, which is on Mountain Time, could help business. The town's petition to move to Mountain Time was approved by the U.S. Transportation Department in 1999.

North Dakota • Time zones: Mountain time and Central time • A southwestern portion of the High Plains state is on Mountain time, while the remainder of North Dakota observes Central time. All of the counties that are either partially or entirely within the Mountain Time Zone are west of the Missouri River.

Oregon • Time zones: Pacific time and Mountain time (an eastern bite) • Most of the Pacific northwestern state observes Pacific time, except for the northern part of Malheur County, which borders Idaho and observes Mountain time. Malheur is sparsely populated and is closely linked economically to Idaho – given the county's promiximity to Boise – which is on Mountain time.

South Dakota • Time zones: Mountain time and Central time • South Dakota is virtually divided down the middle between Mountain and Central time. Sioux Falls, the state's biggest city, is on the eastern edge of the state and in the Central Time Zone. Rapid City, South Dakota's second largest city, is in the western part of the state and in the Mountain Time Zone.

Tennessee • Time zones: Central time and Eastern time • The majority of Tennessee is in the Central Time Zone, with the eastern third of the state in observing Eastern. Memphis and country music hub Nashville are in the Central Time Zone; Chattanooga is in the Eastern Time Zone.