While the rest of the country observes daylight saving time every year, two states do not.
Arizona and Hawaii do not participate in daylight saving time, which marks the end of a sun-filled summer, and the beginning of a crisp fall.
Nearly everyone gained an extra hour of sleep as the clocks fell back at 2am Sunday.
People in Arizona, except the Navajo Nation, a Native American territory, do not observe the annual phenomenon simply because the state decided there was no reason to do so.
Meanwhile, Hawaii doesnt follow daylight saving time because it is located close to the equator, meaning the states daily sunlight does not change frequently throughout the year.
Arizona (pictured) and Hawaii do not participate in daylight saving time, which marks the end of a sun-filled summer, and the beginning of crisp fall
Hawaii (pictured) does not observe daylight saving time because it is too close to the equator, while Arizona has opted out of doing so as the state doesnt see a reason to
Along with the two states, territories including American Samoa, the Northern Mariana islands, Puerto Rico, the U.S. Virgin Islands, and Guam do not participate.
Despite Congress passing the Uniform Time Act in 1966, both Arizona and Hawaii opted out and decided to go by standard time all year long.
Arizona hasnt always avoided daylight saving time, as the state previously observed it in 1918.
By 1986, the Grand Canyon State decided to make the change, according to Arizona State Library.
The legislature found that the state needed to preserve daylight so its deserts could consume more energy during the treacherously hot summers, Forbes reported.
Hawaii, which became the 50th state in the United States in August 1959, only observes Hawaiian Standard time all year round.
Time Zones in the US came about in the mid-nineteenth century as a way to accommodate railroad schedules, leading the clocks to change twice a year in most of the country
In April 133, the Territorial Legislature enacted a bill that placed Hawaii on daylight saving time from the last Sunday in April to the final Sunday in September, but the law was thrown out just weeks later.
During World War II, Hawaiian Standard Time was set, which is ahead one hour for the entire year.
Time Zones in the U.S. came about in the mid-nineteenth century as a way to accommodate railroad schedules, Arizona State Library stated.
According to author Michael Downing, the reason the clock changes at 2am on Sunday is because that was when they would interrupt the least amount of train travel around the country, he explained to TIME Magazine while discussing his book Spring Forward: The Annual Madness of Daylight Saving Time.
It has long been the topic of debate throughout the country as many people have been left wondering why it has to take place.
Over the past six years several states have either passed resolutions or enacted legislation to have year-round daylight saving time.
Along with the two states, territories including American Samoa, the Northern Mariana islands, Puerto Rico, the U.S. Virgin Islands, and Guam do not participate
Colorado, Oklahoma, Kentucky, Alabama, Georgia, Minnesota, Mississippi, Montana, Idaho, Louisiana, Ohio, South Carolina, Utah, Wyoming, Delaware. Maine, Oregon, Tennessee, Washington and Florida are among that list, Forbes reported.
Despite a majority of Americans technically gaining an hour of slumber on Sunday, experts have warned that the time change can negatively impact your sleep schedule in the long run.
According to SleepFoundation.org, the time change during Daylight Saving Time can interfere with your sleep-wake cycle and may throw off your ability to feel alert in the morning and sleepy at night.
Thats because humans use circadian rhythms, or 24-hour cycles that regulate sleep and other key bodily functions, which are largely dependent on light exposure.
Experts have suggested that people should avoid alcohol before bed, napping in moderation, spending time outdoors during the day, and establishing a good sleep schedule in the weeks leading up to the end of daylight saving time.
It also suggested gradually altering your bedtime two to three days before the transition.