Arizona is in Mountain Standard Time. Arizona does not observe daylight saving time, with the exception of the Navajo Nation. All of Arizona is in the mountain time zone. Since 1968, the majority of the state, with the exceptions listed below, does not observe daylight saving time and remains in Mountain Standard Time (MST) year-round.
This means that most of Arizona has the same time as neighboring California each year, from March to November, when locations in the Pacific time zone observe daylight saving time.
