AKST to KST Converter
Convert time between Alaska Standard Time (AKST) and Korea Standard Time (KST)
Alaska Standard Time (AKST)
Korea Standard Time (KST)
Time Difference
Korea Standard Time (KST) is 0 hours ahead of Alaska Standard Time (AKST)
Select Date
Select Time
Quick Reference
| AKST | KST |
|---|---|
| 18:00 | 11:00 |
| 20:00 | 13:00 |
| 22:00 | 15:00 |
| 00:00 | 17:00 |
| 02:00 | 19:00 |
| 04:00 | 21:00 |
| 06:00 | 23:00 |
| 08:00 | 01:00 |
| 10:00 | 03:00 |
| 12:00 | 05:00 |
| 14:00 | 07:00 |
| 16:00 | 09:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About AKST to KST Time Conversion
Converting time between Alaska Standard Time (AKST) and Korea Standard Time (KST) bridges Anchorage, Fairbanks and Juneau with Seoul, Busan and Incheon. AKST is UTC-9 while KST is UTC+9, placing KST exactly 18 hours ahead of AKST. The two regions sit close to opposite sides of the globe, so live meetings are difficult and most coordination is asynchronous.
This converter uses the IANA timezone database to handle daylight saving transitions automatically. Alaska uses AKST from the first Sunday in November to the second Sunday in March; outside that window it switches to AKDT (UTC-8), narrowing the offset to 17 hours. South Korea does not observe daylight saving, so KST stays at UTC+9 year-round.
Common Use Cases for AKST to KST Conversion
Business & Work
- Scheduling handoffs between Alaska-based fishing, energy or logistics teams and South Korean partners
- Coordinating shipping and supply-chain operations between Alaska and Korea
- Planning asynchronous research and engineering work across the two regions
Personal & Travel
- Planning travel itineraries between Alaska and South Korea
- Coordinating with family and friends in Seoul, Busan, Incheon or Daegu from Alaska
- Scheduling virtual events and online classes for AKST and KST audiences
Time Zone Information
Alaska Standard Time (AKST)
- UTC Offset: UTC-9
- IANA Timezone: America/Anchorage
- Daylight Saving: First Sunday in November to Second Sunday in March (AKST period)
- Major Cities: Anchorage, Fairbanks, Juneau, Sitka
- Coverage: Most of Alaska during the northern winter
Korea Standard Time (KST)
- UTC Offset: UTC+9
- IANA Timezone: Asia/Seoul
- Daylight Saving: None - KST is observed year-round
- Major Cities: Seoul, Busan, Incheon, Daegu, Daejeon, Gwangju
- Coverage: All of South Korea
Quick Reference: AKST to KST
Remember: KST is always 18 hours ahead of AKST during the northern winter
Frequently Asked Questions
What is the time difference between AKST and KST?
Alaska Standard Time (AKST) is UTC-9, while Korea Standard Time (KST) is UTC+9. KST is 18 hours ahead of AKST. When it is 3:00 PM in Anchorage, it is 9:00 AM the next day in Seoul.
When does this AKST to KST conversion apply?
AKST is observed in Alaska from the first Sunday in November to the second Sunday in March. Outside that window, Alaska uses AKDT (UTC-8), narrowing the offset to KST to 17 hours. South Korea has no DST, so KST stays at UTC+9 year-round.
How does the time difference change throughout the year?
KST is constant at UTC+9. The variation is entirely on the Alaska side: AKST (UTC-9) gives an 18-hour gap, AKDT (UTC-8) gives a 17-hour gap. The transition happens in early November and mid-March each year.
What are the best times for AKST-KST business calls?
The 18-hour gap means morning AKST corresponds to early-morning-next-day KST. 3:00 PM AKST is 9:00 AM next-day KST — a workable handoff for an Anchorage afternoon to a Seoul morning. Same-day live meetings are difficult; most teams design async workflows.
Which countries/regions use KST timezone?
KST is used across all of South Korea. Major cities include Seoul, Busan, Incheon, Daegu, Daejeon, and Gwangju. South Korea does not observe daylight saving, so KST is the same year-round.
Which countries/regions use AKST timezone?
AKST is observed across most of Alaska during the northern winter. Major cities include Anchorage, Fairbanks, Juneau, and Sitka. The Aleutian Islands west of 169°30′W use Hawaii-Aleutian Time instead.
Pro Tips
- • KST is 18 hours ahead of AKST — add 18 hours to an Anchorage time to get the Seoul time (most results land on the next day).
- • Korea has no daylight saving. The 18-hour offset only applies during AKST (November–March); in AKDT it narrows to 17 hours.
- • Best handoff window: 3:00 PM–6:00 PM AKST equals 9:00 AM–12:00 PM next-day KST — afternoon Anchorage hands off to morning Seoul.
- • Live same-day meetings are difficult due to the ~18-hour gap; design async workflows, recorded standups or scheduled handoffs instead.
- • Use IANA identifiers (America/Anchorage and Asia/Seoul) in calendars so the AKST/AKDT switch is handled automatically.
- • Late-evening AKST (8:00–10:00 PM) corresponds to mid-afternoon next-day KST (2:00–4:00 PM), useful for evening Anchorage calls with Seoul afternoons.