Seoul to Anchorage
-17hSeoul
KSTSOURCEAnchorage
AKDTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and AKDT on the World Map
The map below highlights the KST (Korea Standard Time) and AKDT (Alaska Standard Time) timezone regions across the globe.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
About Anchorage
WikipediaAnchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
Moose occasionally wander through the city streets.
Time Conversion Guide: Seoul to Anchorage
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, also currently on daylight saving time. That puts Seoul 17 hours behind Anchorage — a difference of -17h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 4:00 PM in Anchorage on the previous day. Midnight in Seoul is 7:00 AM in Anchorage.Anchorage observes daylight saving time while Seoul does not, so the gap narrows or widens by an hour part of the year.
Seoul to Anchorage time conversion table
| Seoul (KST) | Anchorage (AKDT) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | previous day |
| 6:00 AM | 1:00 PM | previous day |
| 7:00 AM | 2:00 PM | previous day |
| 8:00 AM | 3:00 PM | previous day |
| 9:00 AM | 4:00 PM | previous day |
| 12:00 PM | 7:00 PM | previous day |
| 3:00 PM | 10:00 PM | previous day |
| 5:00 PM | 12:00 AM | same day |
| 6:00 PM | 1:00 AM | same day |
| 9:00 PM | 4:00 AM | same day |
Why people convert Seoul to Anchorage time
- Scheduling a call from Seoul to Anchorage: a 10:00 AM start in Seoul lands at 5:00 PM in Anchorage the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -17h gap: Seoul and Anchorage have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Anchorage is 4:00 PM in Seoul.
- Keeping family and friends in sync: knowing that 8:00 PM in Seoul is 3:00 AM in Anchorage makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -17h gap is not.
- With a -17h gap there is no shared 9-to-5 window, so alternate the early start: one week Seoul takes the early slot, the next week Anchorage does.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
Best time to call between Seoul and Anchorage
With a -17h offset there is no overlap inside a normal 9 AM – 5 PM day. Anchorage opens at 9:00 AM AKDT, which is 4:00 PM in Seoul, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Seoul and Anchorage have no shared working hours because of the -17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Seoul is 17 hours behind Anchorage (KST UTC+09:00 → AKDT UTC-08:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Seoul
Does not observe DST
Anchorage
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Seoul and Anchorage?
Seoul (KST, UTC+09:00) is 17 hours behind Anchorage (AKDT, UTC-08:00). The gap is currently -17h.
How do I convert Seoul time to Anchorage time?
Add -17h to Seoul local time. For example, 9:00 AM in Seoul is 4:00 PM in Anchorage (previous day).
What time is it in Anchorage right now?
Anchorage uses AKDT at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -17h offset from Seoul.
What is the best time to call Anchorage from Seoul?
There is no shared working-hours window because of the -17h gap. The closest option is 1:00 PM in Seoul, which is 8:00 PM in Anchorage.
Which is behind, Seoul or Anchorage?
Seoul is 17 hours behind Anchorage. When it is 12:00 PM in Seoul it is 7:00 PM in Anchorage.
Do Seoul and Anchorage use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Anchorage (USA) uses AKDT at UTC-08:00. The IANA identifiers are Asia/Seoul and America/Anchorage.
Does daylight saving time affect the Seoul–Anchorage difference?
Yes at the moment: Anchorage is on daylight saving time and Seoul is not, so the -17h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Seoul's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, Seoul's zone?
KST is used in South Korea, North Korea.
Is there a day difference between Seoul and Anchorage?
Sometimes. The -17h gap is large enough that 8:00 PM or later in Seoul already falls on the in Anchorage.
What is the time difference between Seoul and Anchorage?
Anchorage is -17h from Seoul.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
What timezone is Anchorage in?
Anchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
What are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
What is the best time to schedule a call between Seoul and Anchorage?
The best overlap for a call is when both cities are in business hours. Seoul works 9:00 AM - 6:00 PM KST and Anchorage works 8:00 AM - 5:00 PM AKST (-17h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Seoul and Anchorage?
Seoul uses KRW (₩) while Anchorage uses USD ($). Check current exchange rates when planning travel or business between these cities.
How do Seoul and Anchorage compare in size?
Seoul has a population of approximately 9.7 million (metro: 25.5 million), while Anchorage has approximately 287,000 (metro: 398,000).
What are the major landmarks in Seoul and Anchorage?
Seoul is known for Gyeongbokgung Palace, N Seoul Tower, Bukchon Hanok Village. Anchorage is famous for Anchorage Museum, Tony Knowles Coastal Trail, Flattop Mountain.
Do Seoul and Anchorage have stock exchanges?
Yes. Seoul has the KRX (Korea Exchange) and Anchorage has the N/A (Uses NYSE/NASDAQ). The -17h time difference affects trading hour overlaps between these exchanges.
Which countries use KST (Korea Standard Time)?
KST is used in South Korea, North Korea.
Does KST observe daylight saving time?
No, KST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about KST?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
Which cities are in the AKST timezone?
Major cities in the AKST timezone include Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
What is the UTC offset for AKST?
Alaska Standard Time (AKST) is at UTC-09:00. During daylight saving time, it shifts to AKDT.
What should I know about the AKST timezone?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
When is it midnight in Seoul, what time is it in Anchorage?
When it is 12:00 AM (midnight) in Seoul (KST), it is -17h later in Anchorage (AKST).
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