Thailand to Seoul
+2hThailand
ICTSOURCESeoul
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and KST on the World Map
The map below highlights the ICT (Indochina Time) and KST (Korea Standard Time) timezone regions across the globe.
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.
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).
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.
Thailand to Seoul Time Difference – Complete Guide
Thailand runs on Indochina Time (ICT) at UTC+07:00. Seoul runs on Korean Standard Time (KST) at UTC+09:00. That puts Thailand 2 hours ahead of Seoul — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in Thailand it is 11:00 AM in Seoul. Midnight in Thailand is 2:00 AM in Seoul. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Thailand to Seoul time conversion table
| Thailand (ICT) | Seoul (KST) | Day |
|---|---|---|
| 12:00 AM | 2:00 AM | same day |
| 6:00 AM | 8:00 AM | same day |
| 7:00 AM | 9:00 AM | same day |
| 8:00 AM | 10:00 AM | same day |
| 9:00 AM | 11:00 AM | same day |
| 12:00 PM | 2:00 PM | same day |
| 3:00 PM | 5:00 PM | same day |
| 5:00 PM | 7:00 PM | same day |
| 6:00 PM | 8:00 PM | same day |
| 9:00 PM | 11:00 PM | same day |
Why people convert Thailand to Seoul time
- Scheduling a call from Thailand to Seoul: a 10:00 AM start in Thailand lands at 12:00 PM in Seoul, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Thailand and Seoul are inside the 9-to-5 working day between 9:00 AM and 3:00 PM ICT time (11:00 AM–5:00 PM KST). That is roughly 6 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Thailand is 10:00 PM in Seoul makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a +2h gap is not.
- Block 9:00 AM–3:00 PM ICT as the recurring meeting window if you work primarily from Thailand and need Seoul colleagues present.
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.
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.
Best time to call between Thailand and Seoul
Both Thailand and Seoul sit inside the 9 AM – 5 PM working day between 9:00 AM–3:00 PM ICT, which is 11:00 AM–5:00 PM KST. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Thailand and Seoul share 6 hours of working-hours overlap (9:00 AM–3:00 PM ICT), so scheduling a live meeting is straightforward.
Thailand is 2 hours ahead of Seoul (ICT UTC+07:00 → KST UTC+09:00). The shared working window is 9:00 AM–3:00 PM ICT. 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 Thailand and Seoul?
Thailand (ICT, UTC+07:00) is 2 hours ahead of Seoul (KST, UTC+09:00). The gap is currently +2h.
How do I convert Thailand time to Seoul time?
Add +2h to Thailand local time. For example, 9:00 AM in Thailand is 11:00 AM in Seoul.
What time is it in Seoul right now?
Seoul uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +2h offset from Thailand.
What is the best time to call Seoul from Thailand?
Call between 9:00 AM and 3:00 PM ICT — that maps to 11:00 AM–5:00 PM KST and keeps both parties inside the working day.
Which is ahead, Thailand or Seoul?
Thailand is 2 hours ahead of Seoul. When it is 12:00 PM in Thailand it is 2:00 PM in Seoul.
Do Thailand and Seoul use different time zones?
Thailand (Thailand) uses ICT at UTC+07:00, while Seoul (South Korea) uses KST at UTC+09:00. The IANA identifiers are Asia/Bangkok and Asia/Seoul.
Does daylight saving time affect the Thailand–Seoul difference?
Neither zone observes daylight saving time, so the +2h offset between Thailand and Seoul is fixed all year.
Which other cities share Thailand's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, Thailand's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between Thailand and Seoul?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between Thailand and Seoul?
Seoul is +2h from Thailand.
What timezone is Thailand in?
Thailand operates on its local timezone.
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 are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
Which countries use ICT (Indochina Time)?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Does ICT observe daylight saving time?
No, ICT does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about ICT?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in Thailand, what time is it in Seoul?
When it is 12:00 AM (midnight) in Thailand (ICT), it is +2h later in Seoul (KST).
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