Seoul to Thailand
-2hSeoul
KSTSOURCEThailand
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
KST and ICT on the World Map
The map below highlights the KST (Korea Standard Time) and ICT (Indochina 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).
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
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.
Everything You Need to Know About Seoul and Thailand Time
Seoul runs on Korean Standard Time (KST) at UTC+09:00. Thailand runs on Indochina Time (ICT) at UTC+07:00. That puts Seoul 2 hours behind Thailand — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in Seoul it is 7:00 AM in Thailand. Midnight in Seoul is 10:00 PM in Thailand. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Seoul to Thailand time conversion table
| Seoul (KST) | Thailand (ICT) | Day |
|---|---|---|
| 12:00 AM | 10:00 PM | previous day |
| 6:00 AM | 4:00 AM | same day |
| 7:00 AM | 5:00 AM | same day |
| 8:00 AM | 6:00 AM | same day |
| 9:00 AM | 7:00 AM | same day |
| 12:00 PM | 10:00 AM | same day |
| 3:00 PM | 1:00 PM | same day |
| 5:00 PM | 3:00 PM | same day |
| 6:00 PM | 4:00 PM | same day |
| 9:00 PM | 7:00 PM | same day |
Why people convert Seoul to Thailand time
- Scheduling a call from Seoul to Thailand: a 10:00 AM start in Seoul lands at 8:00 AM in Thailand, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Seoul and Thailand are inside the 9-to-5 working day between 11:00 AM and 5:00 PM KST time (9:00 AM–3:00 PM ICT). That is roughly 6 hours of usable overlap.
- Coordinating a Seoul-based team with Thailand 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 -2h gap is not.
- Block 11:00 AM–5:00 PM KST as the recurring meeting window if you work primarily from Seoul and need Thailand colleagues present.
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 ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
Best time to call between Seoul and Thailand
Both Seoul and Thailand sit inside the 9 AM – 5 PM working day between 11:00 AM–5:00 PM KST, which is 9:00 AM–3:00 PM ICT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Seoul and Thailand share 6 hours of working-hours overlap (11:00 AM–5:00 PM KST), so scheduling a live meeting is straightforward.
Seoul is 2 hours behind Thailand (KST UTC+09:00 → ICT UTC+07:00). The shared working window is 11:00 AM–5:00 PM KST. Remember to re-check around daylight-saving transitions.
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 Thailand?
Seoul (KST, UTC+09:00) is 2 hours behind Thailand (ICT, UTC+07:00). The gap is currently -2h.
How do I convert Seoul time to Thailand time?
Add -2h to Seoul local time. For example, 9:00 AM in Seoul is 7:00 AM in Thailand.
What time is it in Thailand right now?
Thailand uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h offset from Seoul.
What is the best time to call Thailand from Seoul?
Call between 11:00 AM and 5:00 PM KST — that maps to 9:00 AM–3:00 PM ICT and keeps both parties inside the working day.
Which is behind, Seoul or Thailand?
Seoul is 2 hours behind Thailand. When it is 12:00 PM in Seoul it is 10:00 AM in Thailand.
Do Seoul and Thailand use different time zones?
Seoul (South Korea) uses KST at UTC+09:00, while Thailand (Thailand) uses ICT at UTC+07:00. The IANA identifiers are Asia/Seoul and Asia/Bangkok.
Does daylight saving time affect the Seoul–Thailand difference?
Neither zone observes daylight saving time, so the -2h offset between Seoul and Thailand is fixed all year.
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 Thailand?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between Seoul and Thailand?
Thailand is -2h 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 Thailand in?
Thailand operates on its local timezone.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
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 ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in Seoul, what time is it in Thailand?
When it is 12:00 AM (midnight) in Seoul (KST), it is -2h later in Thailand (ICT).
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