Daylight Saving Time ends on Sunday and most of Arizona won’t have to worry about changing their clocks. However, the Navajo Nation does observe Daylight Saving Time and will have to turn their clocks back. Daylight Saving Time ends at 2 a.m. Sunday morning, which means the Navajo Nation will be back in time with the rest of Arizona. The Navajo Nation is the only place in Arizona that observes Daylight Saving Time, even though there’s a common misconception that all of Arizona doesn’t fall in line with the majority of other states. Daylight Saving Time runs from the second Sunday in March until the first Sunday in November.