Hawaii doesn’t observe Daylight Saving Time primarily because of its geographic location near the equator. This results in minimal variation in daylight length throughout the year, so there’s little benefit in shifting the clocks to “save” daylight. The consistent sunrise and sunset times mean that adjusting clocks would have little effect on daily schedules or energy use in Hawaii.
Along with Hawaii, Arizona is the other U.S. state that mostly skips Daylight Saving Time. Arizona’s choice is based on its hot desert climate, where extending evening daylight hours in summer would increase energy use and discomfort by keeping the sun out later.
The simple reason both Hawaii and Arizona avoid Daylight Saving Time is that their unique climates and geographical positions make the benefits of changing clocks negligible or counterproductive.
SOURCES
(https://www.hindustantimes.com/world-news/us-news/why-do-these-two-american-states-skip-daylight-saving-heres-the-exact-reasons-101741556393362.html)
(https://thehill.com/homenews/nexstar_media_wire/5184764-two-states-didnt-spring-forward/)(https://en.wikipedia.org/wiki/Daylight_saving_time_in_the_United_States)
(https://www.cbsnews.com/news/states-without-daylight-saving-time/)(https://www.transportation.gov/regulations/daylight-saving-time)
