South Korea to AKST
-18hSouth Korea
KSTSOURCEAKST
AKSTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and AKST on the World Map
The map below highlights the KST (Korea Standard Time) and AKST (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.
Everything You Need to Know About South Korea and AKST Time
South Korea runs on Korean Standard Time (KST) at UTC+09:00. AKST runs on Alaska Standard Time (AKST) at UTC-09:00. That puts South Korea 18 hours behind AKST — a difference of -18h at the current offsets.
In practice, when it is 9:00 AM in South Korea it is 3:00 PM in AKST on the previous day. Midnight in South Korea is 6:00 AM in AKST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
South Korea to AKST time conversion table
| South Korea (KST) | AKST (AKST) | Day |
|---|---|---|
| 12:00 AM | 6:00 AM | previous day |
| 6:00 AM | 12:00 PM | previous day |
| 7:00 AM | 1:00 PM | previous day |
| 8:00 AM | 2:00 PM | previous day |
| 9:00 AM | 3:00 PM | previous day |
| 12:00 PM | 6:00 PM | previous day |
| 3:00 PM | 9:00 PM | previous day |
| 5:00 PM | 11:00 PM | previous day |
| 6:00 PM | 12:00 AM | same day |
| 9:00 PM | 3:00 AM | same day |
Why people convert South Korea to AKST time
- Scheduling a call from South Korea to AKST: a 10:00 AM start in South Korea lands at 4:00 PM in AKST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -18h gap: South Korea and AKST 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 AKST is 3:00 PM in South Korea.
- Coordinating a South Korea-based team with AKST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM KST" is unambiguous; "3 PM" across a -18h gap is not.
- With a -18h gap there is no shared 9-to-5 window, so alternate the early start: one week South Korea takes the early slot, the next week AKST does.
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 South Korea and AKST
With a -18h offset there is no overlap inside a normal 9 AM – 5 PM day. AKST opens at 9:00 AM AKST, which is 3:00 PM in South Korea, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
South Korea and AKST have no shared working hours because of the -18h gap. Teams need to alternate early starts or rely on asynchronous handovers.
South Korea is 18 hours behind AKST (KST UTC+09:00 → AKST UTC-09:00). 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
South Korea
Does not observe DST
AKST
☀ 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 South Korea and AKST?
South Korea (KST, UTC+09:00) is 18 hours behind AKST (AKST, UTC-09:00). The gap is currently -18h.
How do I convert South Korea time to AKST time?
Add -18h to South Korea local time. For example, 9:00 AM in South Korea is 3:00 PM in AKST (previous day).
What time is it in AKST right now?
AKST uses AKST at UTC-09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -18h offset from South Korea.
What is the best time to call AKST from South Korea?
There is no shared working-hours window because of the -18h gap. The closest option is 1:00 PM in South Korea, which is 7:00 PM in AKST.
Which is behind, South Korea or AKST?
South Korea is 18 hours behind AKST. When it is 12:00 PM in South Korea it is 6:00 PM in AKST.
Do South Korea and AKST use different time zones?
South Korea (South Korea) uses KST at UTC+09:00, while AKST uses AKST at UTC-09:00. The IANA identifiers are Asia/Seoul and America/Anchorage.
Does daylight saving time affect the South Korea–AKST difference?
Neither zone observes daylight saving time, so the -18h offset between South Korea and AKST is fixed all year.
Which other cities share South Korea's time zone?
KST also covers Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
Which countries use KST, South Korea's zone?
KST is used in South Korea, North Korea.
Is there a day difference between South Korea and AKST?
Sometimes. The -18h gap is large enough that 8:00 PM or later in South Korea already falls on the in AKST.
What is the time difference between South Korea and AKST?
AKST is -18h from South Korea.
What timezone is South Korea in?
South Korea operates on its local timezone.
What timezone is AKST in?
AKST operates on its local timezone.
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 South Korea, what time is it in AKST?
When it is 12:00 AM (midnight) in South Korea (KST), it is -18h later in AKST (AKST).
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