The decision by Hawaii and most of Arizona to remain on standard time has practical implications for residents, businesses, and travelers. For Hawaii, the minimal change in daylight hours means that DST would offer little benefit in terms of extending daylight for outdoor activities. The tropical climate also means that the impact of an extra hour of evening sun during summer months on energy consumption is less pronounced. In Arizona, the primary driver for skipping DST is energy conservation and public health. Shifting clocks forward during the summer would mean more daylight during the hottest part of the day, potentially increasing air conditioning use and exacerbating heat-related health risks. The exception of the Navajo Nation highlights the complexities of time zone management within a single state, affecting communication, scheduling, and business operations across its borders. Understanding these differing approaches to DST is crucial for anyone traveling to or conducting business with these regions, as it impacts everything from flight schedules to meeting times.