Arizona: A State of Two Times

The question "what time is it in Arizona?" is famous for being tricky. Due to a unique approach to Daylight Saving Time, there are often two different times active within the state. Use the toggle above to see the time in both regions.

The General Rule: No DST

For most of Arizona, the rule is simple: the state remains on **Mountain Standard Time (MST)** all year. This is a permanent offset of **UTC-7**. Unlike almost every other state, Arizona does not "spring forward" or "fall back," providing a consistent time year-round.

The Navajo Nation Exception

The major exception is the vast **Navajo Nation** in the northeastern corner of the state. As a sovereign entity, it chooses to observe Daylight Saving Time. This means for most of the year, it is one hour ahead of the rest of Arizona.

• In summer, the Navajo Nation is on **Mountain Daylight Time (MDT)**, or UTC-6.
• In winter, it aligns with the rest of Arizona on Mountain Standard Time (MST), UTC-7.

Why The Split Exists

Arizona's decision to opt out of DST dates back to the 1960s. Due to its hot climate, residents preferred more light in the cool early mornings rather than in the hot evenings. The Navajo Nation observes DST to maintain a consistent time with its portions in neighboring Utah and New Mexico, which do observe it.

Planning and Coordination

This duality means travelers must be aware when crossing into the Navajo Nation. For most of the year, a short drive from Flagstaff to Window Rock involves a one-hour time change. This interactive clock is designed to provide clarity for this unique situation.