Most U.S. states observe daylight saving time (DST), with the two exceptions being Arizona and Hawaii. Arizona does not observe DST except for the Navajo Nation, which spans parts of Arizona, Utah, and New Mexico and does observe it. Hawaii also does not observe DST due to its proximity to the equator, which results in relatively consistent daylight throughout the year. Apart from these two states, all other states, including Alaska, follow DST in accordance with federal guidelines. Additionally, several U.S. territories such as American Samoa, Guam, Northern Mariana Islands, Puerto Rico, and U.S. Virgin Islands do not observe DST either.
