Vietnam to BST
-6hVietnam
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.
Everything You Need to Know About Vietnam and BST Time
Vietnam runs on Indochina Time (ICT) at UTC+07:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts Vietnam 6 hours behind BST — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Vietnam it is 3:00 AM in BST. Midnight in Vietnam is 6:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Vietnam to BST time conversion table
| Vietnam (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 Vietnam to BST time
- Scheduling a call from Vietnam to BST: a 10:00 AM start in Vietnam lands at 4:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Vietnam 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.
- Watching a live event or market open: Vietnam viewers need 3:00 AM in BST to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to Vietnam.
- 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 Vietnam 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 Vietnam and BST
Both Vietnam 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
Vietnam and BST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Vietnam 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
Vietnam
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 Vietnam and BST?
Vietnam (ICT, UTC+07:00) is 6 hours behind BST (BST, UTC+01:00). The gap is currently -6h.
How do I convert Vietnam time to BST time?
Add -6h to Vietnam local time. For example, 9:00 AM in Vietnam 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 Vietnam.
What is the best time to call BST from Vietnam?
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, Vietnam or BST?
Vietnam is 6 hours behind BST. When it is 12:00 PM in Vietnam it is 6:00 AM in BST.
Do Vietnam and BST use different time zones?
Vietnam (Vietnam) uses ICT at UTC+07:00, while BST uses BST at UTC+01:00. The IANA identifiers are Asia/Ho_Chi_Minh and Europe/London.
Does daylight saving time affect the Vietnam–BST difference?
Neither zone observes daylight saving time, so the -6h offset between Vietnam and BST is fixed all year.
Which other cities share Vietnam's time zone?
ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
Which countries use ICT, Vietnam's zone?
ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).
Is there a day difference between Vietnam and BST?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Vietnam and BST?
BST is -6h from Vietnam.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
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 Vietnam, what time is it in BST?
When it is 12:00 AM (midnight) in Vietnam (ICT), it is -6h later in BST (BST).
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