Bangkok to BST
-6hBangkok
ICTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and BST on the World Map
The map below highlights the ICT (Indochina Time) and BST (British Summer 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.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
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.
Bangkok vs BST: Offsets, DST and Best Call Times
Bangkok runs on Indochina Time (ICT) at UTC+07:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts Bangkok 6 hours behind BST — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Bangkok it is 3:00 AM in BST. Midnight in Bangkok is 6:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Bangkok to BST time conversion table
| Bangkok (ICT) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert Bangkok to BST time
- Scheduling a call from Bangkok to BST: a 10:00 AM start in Bangkok lands at 4:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Bangkok and BST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM ICT time (9:00 AM–11:00 AM BST). That is roughly 2 hours of usable overlap.
- Booking travel or deliveries: tracking BST local time against Bangkok keeps pickup windows and arrival estimates honest across the -6h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM ICT as the recurring meeting window if you work primarily from Bangkok and need BST 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 BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
Best time to call between Bangkok and BST
Both Bangkok and BST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM ICT, which is 9:00 AM–11:00 AM BST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Bangkok and BST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Bangkok is 6 hours behind BST (ICT UTC+07:00 → BST UTC+01:00). The shared working window is 3:00 PM–5:00 PM ICT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Bangkok
Does not observe DST
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
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 BST?
Bangkok (ICT, UTC+07:00) is 6 hours behind BST (BST, UTC+01:00). The gap is currently -6h.
How do I convert Bangkok time to BST time?
Add -6h to Bangkok local time. For example, 9:00 AM in Bangkok is 3:00 AM in BST.
What time is it in BST right now?
BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from Bangkok.
What is the best time to call BST from Bangkok?
Call between 3:00 PM and 5:00 PM ICT — that maps to 9:00 AM–11:00 AM BST and keeps both parties inside the working day.
Which is behind, Bangkok or BST?
Bangkok is 6 hours behind BST. When it is 12:00 PM in Bangkok it is 6:00 AM in BST.
Do Bangkok and BST use different time zones?
Bangkok (Thailand) uses ICT at UTC+07:00, while BST uses BST at UTC+01:00. The IANA identifiers are Asia/Bangkok and Europe/London.
Does daylight saving time affect the Bangkok–BST difference?
Neither zone observes daylight saving time, so the -6h offset between Bangkok and BST 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 BST?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Bangkok and BST?
BST is -6h 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 BST in?
BST 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 BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
When is it midnight in Bangkok, what time is it in BST?
When it is 12:00 AM (midnight) in Bangkok (ICT), it is -6h later in BST (BST).
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