Adak, United States · UTC-9
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Adak is in the America/Adak timezone (HAST/UTC-10, DST to UTC-9 in summer). The westernmost US town, it has a population of only a few hundred people.
Adak is one of the most remote towns in the United States. It sits on an island in the middle of the Aleutian chain, closer to Russia and Japan than to Anchorage. The population is tiny, a few hundred people at most, mostly connected to the commercial fishing industry. And it runs on a clock that is genuinely unusual.
Adak uses Hawaii-Aleutian Time, the same timezone as Honolulu. In winter, that means UTC-10. With daylight saving in summer, it shifts to UTC-9. But here is the quirk: geographically, Adak is so far west that it sits across the 180th meridian from much of Alaska. By strict solar logic, it might belong to a timezone that is east-ahead rather than west-behind. The International Date Line was drawn specifically to loop around the Aleutians, keeping them on the same calendar day as the continental US.
A clock out of step with the sky
The result: Adak sees sunrise and sunset at times that feel off to anyone thinking about latitude and longitude. In summer, the sun can rise as late as 9am local time and set well into the evening. In winter, daylight is brief and the clock feels disconnected from the sky.
Anchorage is one hour ahead of Adak in standard time, despite being geographically to the east.
Adak’s small population means the timezone is rarely a matter of local debate. The people here are used to the clock as a convention, not a description of local solar noon.
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Questions about time in Adak
- What timezone is Adak in?
- Adak uses the IANA timezone
America/Adak. The UTC offset is UTC-10 in winter (standard time) and UTC-9 during daylight saving time (summer). - Does Adak observe daylight saving time?
- Yes. Adak observes daylight saving time, shifting from UTC-10 (standard time) to UTC-9 in summer.
- What is the current UTC offset for Adak?
- Adak is currently at UTC-9. It is currently observing daylight saving time.
- What is the time difference between Adak and New York?
- Adak is currently 5 hours behind New York.
- What is the time difference between Adak and London?
- Adak is currently 10 hours behind London.
- What is the time difference between Adak and Los Angeles?
- Adak is currently 2 hours behind Los Angeles.
- What is the time difference between Adak and Tokyo?
- Adak is currently 18 hours behind Tokyo. Tokyo does not observe daylight saving time, so this gap changes by 1 hour when Adak transitions to/from DST.
- What is the IANA timezone name for Adak?
- The IANA timezone database identifier for Adak is
America/Adak. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'America/Adak' })`), Python (`pytz.timezone('America/Adak')`), or any IANA-compatible library.