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With its idyllic beaches, active volcanoes and vibrant culture, Hawaii is a top vacation destination for many. Its isolated location in the Pacific Ocean makes its time zone a common point of confusion for travelers. Similarly, Alaska’s vast size and separation from the continental United States lead many to wonder what time zone it falls under.

If you’re short on time, here’s a quick answer to your question: Hawaii and most of Alaska are in the Hawaii-Aleutian Time Zone (HATZ), which is UTC-10 and does not observe daylight saving time. However, a small part of Alaska follows the Alaska Time Zone (AKT), which is UTC-9 and does observe daylight saving time.

In this comprehensive guide, we’ll cover everything you need to know about the time zones of Hawaii and Alaska. We’ll look at the history behind the adoption of these time zones, examine Hawaii and Alaska’s unique relationships to mainland US time zones, and provide tips on how to easily keep track of the time when traveling to these beautiful destinations.

History of How Hawaii and Alaska Adopted Their Time Zones

Time zones play a crucial role in keeping our world organized and synchronized. However, the adoption of time zones in different regions has a fascinating history. Let’s delve into the intriguing backstory of how Hawaii and Alaska came to adopt their respective time zones.

Hawaii’s Adoption of the Hawaii-Aleutian Time Zone

Located in the middle of the Pacific Ocean, Hawaii had to find a time zone that suited its unique geographical position. Initially, when standardized time zones were introduced in the United States in 1883, Hawaii was aligned with the Pacific Standard Time (PST). However, due to the vast distance from the mainland and the need for better synchronization with Japan, Hawaii adopted the Hawaii-Aleutian Time Zone in 1947.

The Hawaii-Aleutian Time Zone, also known as HAST (Hawaii-Aleutian Standard Time), is 10 hours behind Coordinated Universal Time (UTC-10). This time zone allows Hawaii to maintain a consistent time difference with the mainland United States and facilitates communication and trade with Asian countries.

Alaska’s Complex History with Time Zones

Alaska’s relationship with time zones has been more complex and varied. Before Alaska became part of the United States, it was primarily influenced by Russian timekeeping practices. However, after the purchase of Alaska from Russia in 1867, the region’s timekeeping underwent significant changes.

Alaska initially adopted Pacific Time (PST), the same as the West Coast of the United States, to facilitate communication and trade. However, due to the vast size of Alaska and the need for better synchronization within the state, Alaska transitioned to Alaska Standard Time (AKST) in 1900.

Furthermore, to accommodate the Aleutian Islands, which stretch across the westernmost part of Alaska, the Alaska-Hawaii Time Zone (AHST) was created in 1942. It later became the Alaska Standard Time Zone (AKST) and is currently observed as Alaska Standard Time (AST) or Alaska Daylight Time (ADT) during daylight saving time.

US Federal Standardization in the 1960s

It wasn’t until the 1960s that the United States federal government took steps to standardize time zones across the country. The Uniform Time Act of 1966 established daylight saving time (DST) across the nation, including Hawaii and Alaska.

However, Hawaii chose not to observe daylight saving time due to its proximity to the equator, where the variation in daylight throughout the year is minimal. Alaska, on the other hand, observes daylight saving time, shifting from Alaska Standard Time (AST) to Alaska Daylight Time (ADT) during the summer months.

Today, Hawaii remains in the Hawaii-Aleutian Time Zone (HAST), while Alaska is divided into four time zones: Alaska Standard Time (AKST), Alaska Daylight Time (ADT), Hawaii-Aleutian Standard Time (HAST), and Hawaii-Aleutian Daylight Time (HADT).

Understanding the history and context behind Hawaii and Alaska’s adoption of their time zones helps us appreciate the complexity of timekeeping around the world.

Hawaii-Aleutian Time Zone (HATZ) Explained

Geography Covered by HATZ

The Hawaii-Aleutian Time Zone (HATZ) encompasses a vast geographical area, including the state of Hawaii and parts of Alaska. It extends over the Hawaiian Islands, which are located in the Pacific Ocean, and stretches all the way to the remote Aleutian Islands in Alaska. The HATZ is the two westernmost time zones in the United States.

UTC Offset and Daylight Saving Time

The HATZ operates on a different time offset from the Coordinated Universal Time (UTC). Hawaii Standard Time (HST) is the time zone used in Hawaii, and it is 10 hours behind UTC during standard time. However, Hawaii does not observe Daylight Saving Time (DST), so the offset remains the same throughout the year. In Alaska, the Aleutian Islands are in the Hawaii-Aleutian Standard Time (HAST) zone, which is 10 hours behind UTC as well. The rest of Alaska follows Alaska Standard Time (AKST), which is 9 hours behind UTC during standard time and 8 hours behind during DST.

History and Usage of HATZ

The Hawaii-Aleutian Time Zone was established in 1983 to standardize the time across the Hawaiian Islands and the Aleutian Islands. Before that, different parts of Hawaii and Alaska were on different time offsets. The HATZ was created to simplify communication and ensure consistent timekeeping within the region. It is important to note that the HATZ is not observed by the entire state of Alaska. The majority of Alaska follows its own time zone, Alaska Standard Time (AKST), with the exception of the Aleutian Islands.

For more information on time zones and their significance, you can visit websites like Time and Date and World Time Zone.

Alaska Time Zone (AKT) Explained

Geography Covered by AKT

The Alaska Time Zone (AKT) covers the entire state of Alaska, which is the largest state in the United States by land area. It stretches over 2,670 miles from its westernmost point in the Aleutian Islands to its easternmost point in the mainland. This vast geographical coverage means that Alaska spans four time zones, from the westernmost Aleutian Islands, which are in the Hawaii-Aleutian Time Zone (HST), to the easternmost part of the mainland, which is in the Alaska Time Zone (AKT).

UTC Offset and Daylight Saving Time Observance

The Alaska Time Zone (AKT) is nine hours behind Coordinated Universal Time (UTC-9:00). This means that when it’s noon in UTC, it’s 3:00 a.m. in AKT. However, it’s important to note that Alaska does observe daylight saving time (DST), with an exception. Most of Alaska does not change their clocks for DST, so they remain on AKT throughout the year. However, some areas in Alaska, such as the Aleutian Islands, do observe DST and switch to the Hawaii-Aleutian Time Zone (HDT) during the DST period.

When AKT Diverges from Pacific Time

While the Pacific Time Zone (PT) is commonly associated with the western coastal areas of the United States, it’s worth mentioning that there are parts of Alaska that also follow PT. The Alaska Panhandle, which includes cities like Juneau and Sitka, follows PT during standard time. However, during DST, the Alaska Panhandle switches to AKT, aligning with the rest of the state. This difference in time zone observance between the Alaska Panhandle and the rest of Alaska can sometimes lead to confusion for visitors or those planning travel arrangements.

How HATZ and AKT Relate to Mainland US Time Zones

When it comes to time zones, the United States is divided into several regions, each with its own standard time. Hawaii and Alaska, being located far away from the mainland, have their own unique time zones known as HATZ (Hawaii-Aleutian Time Zone) and AKT (Alaska Time Zone), respectively. Let’s take a closer look at how these time zones relate to the mainland US time zones.

Comparing Hawaii Time to Pacific Time

Hawaii, also known as the Aloha State, is located in the Pacific Ocean, approximately 2,400 miles southwest of California. As a result, it operates on its own time zone, HATZ, which is 10 hours behind Coordinated Universal Time (UTC-10:00). In comparison to the mainland US, Hawaii is 2 hours behind Pacific Time (PT). So, when it’s 12:00 PM (noon) in California, it’s 10:00 AM in Hawaii. This time difference can sometimes lead to confusion when scheduling meetings or making travel plans between Hawaii and the mainland.

Comparing Alaska Time to Pacific Time and Mountain Time

Alaska, the largest state in the US, spans across multiple time zones, but the majority of the state operates on AKT (Alaska Time Zone), which is 9 hours behind Coordinated Universal Time (UTC-9:00). When comparing Alaska Time to Pacific Time (PT), which is used in states like California, Oregon, and Washington, there is a 1-hour time difference. For example, when it’s 12:00 PM (noon) in California, it’s 11:00 AM in most parts of Alaska.

However, it’s worth noting that some regions in Alaska, such as the Aleutian Islands, operate on their own time zone called “Hawaii-Aleutian Time” (HAT), which is one hour behind AKT. This means that these areas are 10 hours behind Coordinated Universal Time (UTC-10:00) and share the same time zone as Hawaii.

Additionally, a small portion of Alaska, known as the “Southeast Alaska Panhandle,” follows the Mountain Time Zone (MT), which is 1 hour ahead of AKT. So, in this particular area, when it’s 12:00 PM (noon) in California, it’s 1:00 PM in the Southeast Alaska Panhandle.

Understanding the time differences between Hawaii, Alaska, and the mainland US can be essential for planning trips, scheduling phone calls, or keeping track of live events. If you want to check the current time in HATZ or AKT, you can visit reliable websites such as Time and Date or World Clock.

Tips for Tracking Time in Hawaii and Alaska

Using Cell Phones and Computers

When it comes to keeping track of time in Hawaii and Alaska, technology can be your best friend. Most cell phones and computers automatically update to the local time zone based on the GPS location. This means that whether you are in Honolulu or Anchorage, you can rely on your devices to tell you the correct time. However, it’s always a good idea to double-check the time zone settings on your devices to ensure accuracy.

Additionally, there are various apps and websites available that provide real-time information on time zones around the world. One popular website is, which offers a reliable time zone converter and other helpful tools. By utilizing these resources, you can easily stay on top of time differences when traveling between Hawaii and Alaska.

Handling Meeting Coordination Across Time Zones

Coordinating meetings across different time zones can be challenging, but with a few tips, it can be a breeze. First, it’s important to clearly communicate the time zone of the meeting to all participants. Using phrases like “9 AM Pacific Time” or “3 PM Eastern Time” helps avoid confusion.

Furthermore, utilizing scheduling tools such as Google Calendar or time zone conversion apps can simplify the process. These tools allow you to input the time of the meeting in your local time zone and automatically convert it for participants in different time zones. This ensures that everyone is on the same page and avoids any scheduling mishaps.

Lastly, consider scheduling meetings during overlapping working hours to accommodate participants in different time zones. This may require some flexibility, but it can greatly improve collaboration and minimize inconvenience for all parties involved.

Adjusting Sleep Schedules

Traveling between Hawaii and Alaska often involves crossing multiple time zones, which can disrupt your sleep schedule. To minimize the impact of jet lag, it’s recommended to gradually adjust your sleep schedule before your trip. This can be done by gradually shifting your bedtime and wake-up time closer to the local time of your destination.

During your trip, maintaining a consistent sleep routine can also help regulate your body’s internal clock. Try to stick to a regular bedtime and wake-up time, even if it means resisting the temptation to stay up late or sleep in.

If you find it difficult to adjust to the new time zone, consider taking short power naps during the day to recharge without disrupting your sleep schedule too much. Remember to avoid caffeine and alcohol close to bedtime, as they can interfere with your sleep quality.

By following these tips, you can effectively track time and adjust to the time zones in Hawaii and Alaska. Whether you’re conducting business or enjoying a vacation, staying organized and mindful of time differences will ensure a smooth and stress-free experience.


To summarize, Hawaii follows the Hawaii-Aleutian Time Zone (UTC-10) while most of Alaska follows the Alaska Time Zone (UTC-9). Neither observe daylight saving time. This means Hawaii is always 2 hours behind Pacific Time, while Alaska is 1 hour behind Pacific Time and 2 hours behind Mountain Time.

Understanding the time zones of these unique states is key for travelers hoping to effectively plan their Hawaiian or Alaskan adventures. With the tips provided, tracking time across distant time zones becomes much more manageable.

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