ICT to Seoul
+2hICT
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.
ICT vs Seoul: Offsets, DST and Best Call Times
ICT runs on Indochina Time (ICT) at UTC+07:00. Seoul runs on Korean Standard Time (KST) at UTC+09:00. That puts ICT 2 hours ahead of Seoul — a difference of +2h at the current offsets.
In practice, when it is 9:00 AM in ICT it is 11:00 AM in Seoul. Midnight in ICT is 2:00 AM in Seoul. Neither zone observes daylight saving time, so the offset between them stays constant all year.
ICT to Seoul time conversion table
| ICT (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 ICT to Seoul time
- Scheduling a call from ICT to Seoul: a 10:00 AM start in ICT lands at 12:00 PM in Seoul, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both ICT 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.
- Watching a live event or market open: ICT viewers need 11:00 AM in Seoul to catch a 9:00 AM start there, and 10:00 PM if the event is anchored to ICT.
- 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 ICT 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 ICT and Seoul
Both ICT 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
ICT and Seoul share 6 hours of working-hours overlap (9:00 AM–3:00 PM ICT), so scheduling a live meeting is straightforward.
ICT 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 ICT and Seoul?
ICT (ICT, UTC+07:00) is 2 hours ahead of Seoul (KST, UTC+09:00). The gap is currently +2h.
How do I convert ICT time to Seoul time?
Add +2h to ICT local time. For example, 9:00 AM in ICT 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 ICT.
What is the best time to call Seoul from ICT?
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, ICT or Seoul?
ICT is 2 hours ahead of Seoul. When it is 12:00 PM in ICT it is 2:00 PM in Seoul.
Do ICT and Seoul use different time zones?
ICT 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 ICT–Seoul difference?
Neither zone observes daylight saving time, so the +2h offset between ICT and Seoul is fixed all year.
Which other cities share ICT's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, ICT's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between ICT and Seoul?
Not normally. The +2h gap only pushes the date over for late-evening times.
What is the time difference between ICT and Seoul?
Seoul is +2h from ICT.
What timezone is ICT in?
ICT 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 ICT, what time is it in Seoul?
When it is 12:00 AM (midnight) in ICT (ICT), it is +2h later in Seoul (KST).
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