Bangkok to KST
+2hBangkok
ICTSOURCEKST
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 Bangkok
WikipediaBangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.
Bangkok is one of the world's most visited cities, with over 22 million visitors annually.
Comparing Time Zones: Bangkok and KST
Bangkok runs on Indochina Time (ICT) at UTC+07:00. KST runs on Korea Standard Time (KST) at UTC+09:00. That puts Bangkok 2 hours ahead of KST — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in Bangkok it is 11:00 AM in KST. Midnight in Bangkok is 2:00 AM in KST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Bangkok to KST time conversion table
| Bangkok (ICT) | KST (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 Bangkok to KST time
- Scheduling a call from Bangkok to KST: a 10:00 AM start in Bangkok lands at 12:00 PM in KST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Bangkok and KST 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.
- Booking travel or deliveries: tracking KST local time against Bangkok keeps pickup windows and arrival estimates honest across the +2h offset.
- 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 Bangkok and need KST 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 Bangkok and KST
Both Bangkok and KST 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
Bangkok and KST share 6 hours of working-hours overlap (9:00 AM–3:00 PM ICT), so scheduling a live meeting is straightforward.
Bangkok is 2 hours ahead of KST (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 Bangkok and KST?
Bangkok (ICT, UTC+07:00) is 2 hours ahead of KST (KST, UTC+09:00). The gap is currently +2h.
How do I convert Bangkok time to KST time?
Add +2h to Bangkok local time. For example, 9:00 AM in Bangkok is 11:00 AM in KST.
What time is it in KST right now?
KST 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 Bangkok.
What is the best time to call KST from Bangkok?
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, Bangkok or KST?
Bangkok is 2 hours ahead of KST. When it is 12:00 PM in Bangkok it is 2:00 PM in KST.
Do Bangkok and KST use different time zones?
Bangkok (Thailand) uses ICT at UTC+07:00, while KST uses KST at UTC+09:00. The IANA identifiers are Asia/Bangkok and Asia/Seoul.
Does daylight saving time affect the Bangkok–KST difference?
Neither zone observes daylight saving time, so the +2h offset between Bangkok and KST is fixed all year.
Which other cities share Bangkok's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, Bangkok's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between Bangkok and KST?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between Bangkok and KST?
KST is +2h from Bangkok.
What timezone is Bangkok in?
Bangkok operates on Indochina Time (ICT), UTC+7. As Southeast Asia's largest economy hub, Bangkok bridges East Asian and South Asian business hours.
What timezone is KST in?
KST operates on its local timezone.
What are the business hours in Bangkok?
Standard business hours in Bangkok are 8:30 AM - 5:30 PM ICT.
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 Bangkok, what time is it in KST?
When it is 12:00 AM (midnight) in Bangkok (ICT), it is +2h later in KST (KST).
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