If states decide to make changes in opposite directions we could become rather confusing, as it is in Arizona.
However, the daylight saving situation within Arizona is even more confusing. While most of the state ignores daylight saving time, the Navajo Nation, which covers part of northeastern Arizona, observes it. Meanwhile, the Hopi Reservation, which is surrounded entirely by the Navajo Nation, does not. And within the Hopi Reservation sits a small slice of the Navajo Nation that, you guessed it, does observe daylight saving time.
Long story short: If you’re driving through northeastern Arizona, you might want to ask for the time instead of relying on your own watch.