Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Ho Chi Minh to London

-6h

Ho Chi Minh

ICTSOURCE

Vietnam · UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

London

BST

UK · UTC+01:00☀ DST active

HH06

MM00

06:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Ho Chi Minh

London

12:00 AM

6:00 PM-1

2:00 AM

8:00 PM-1

4:00 AM

10:00 PM-1

6:00 AM

12:00 AM

8:00 AM

2:00 AM

10:00 AM

4:00 AM

12:00 PM

6:00 AM

2:00 PM

8:00 AM

4:00 PM

10:00 AM

6:00 PM

12:00 PM

8:00 PM

2:00 PM

10:00 PM

4:00 PM

Green 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 (Greenwich Mean Time) timezone regions across the globe.

ICT Zone

→

BST Zone

Explore all world timezones interactively →

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•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.

Daylight Saving:No – UTC+07:00 year-round

Learn more about ICT on Wikipedia

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

About Ho Chi Minh

Wikipedia

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.

Population:9 million

Metro:13 million

Business Hours:8:00 AM - 5:00 PM ICT

Currency:VND (₫)

Stock Exchange:HOSE (Ho Chi Minh Stock Exchange)

Key Landmarks

Notre-Dame CathedralWar Remnants MuseumBen Thanh MarketIndependence PalaceCu Chi Tunnels

Did You Know?

The city has over 5 million motorbikes, outnumbering cars significantly.

Learn more about ICT timezone →

About London

Wikipedia

London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.

Population:8.8 million

Metro:14.8 million

Business Hours:9:00 AM - 5:00 PM GMT

Currency:GBP (£)

Stock Exchange:LSE (London Stock Exchange)

Key Landmarks

Big BenTower BridgeBuckingham PalaceLondon EyeThe Shard

Did You Know?

Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.

Learn more about BST timezone →

Everything You Need to Know About Ho Chi Minh and London Time

Ho Chi Minh runs on Indochina Time (ICT) at UTC+07:00. London runs on British Summer Time (BST) at UTC+01:00, also currently on daylight saving time. That puts Ho Chi Minh 6 hours behind London — a difference of -6h at the current offsets.

In practice, when it is 9:00 AM in Ho Chi Minh it is 3:00 AM in London. Midnight in Ho Chi Minh is 6:00 PM in London.London observes daylight saving time while Ho Chi Minh does not, so the gap narrows or widens by an hour part of the year.

Ho Chi Minh to London time conversion table

Ho Chi Minh (ICT)	London (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 Ho Chi Minh to London time

Scheduling a call from Ho Chi Minh to London: a 10:00 AM start in Ho Chi Minh lands at 4:00 AM in London, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Ho Chi Minh and London 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: Ho Chi Minh viewers need 3:00 AM in London to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to Ho Chi Minh.

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 Ho Chi Minh and need London colleagues present.
London: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.

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 GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Best time to call between Ho Chi Minh and London

Both Ho Chi Minh and London 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

Ho Chi Minh and London overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.

Ho Chi Minh is 6 hours behind London (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

Ho Chi Minh

Does not observe DST

London

☀ 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:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Ho Chi Minh and London?

Ho Chi Minh (ICT, UTC+07:00) is 6 hours behind London (BST, UTC+01:00). The gap is currently -6h.

How do I convert Ho Chi Minh time to London time?

Add -6h to Ho Chi Minh local time. For example, 9:00 AM in Ho Chi Minh is 3:00 AM in London.

What time is it in London right now?

London 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 Ho Chi Minh.

What is the best time to call London from Ho Chi Minh?

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, Ho Chi Minh or London?

Ho Chi Minh is 6 hours behind London. When it is 12:00 PM in Ho Chi Minh it is 6:00 AM in London.

Do Ho Chi Minh and London use different time zones?

Ho Chi Minh (Vietnam) uses ICT at UTC+07:00, while London (UK) uses BST at UTC+01:00. The IANA identifiers are Asia/Ho_Chi_Minh and Europe/London.

Does daylight saving time affect the Ho Chi Minh–London difference?

Yes at the moment: London is on daylight saving time and Ho Chi Minh is not, so the -6h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Ho Chi Minh's time zone?

ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.

Which countries use ICT, Ho Chi Minh's zone?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Is there a day difference between Ho Chi Minh and London?

Not normally. The -6h gap only pushes the date over the previous day.

What is the time difference between Ho Chi Minh and London?

London is -6h from Ho Chi Minh.

What timezone is Ho Chi Minh in?

Ho Chi Minh City operates on Indochina Time (ICT), UTC+7. As Vietnam's economic powerhouse and a manufacturing hub, Saigon drives Southeast Asian trade.

What timezone is London in?

London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.

What are the business hours in Ho Chi Minh?

Standard business hours in Ho Chi Minh are 8:00 AM - 5:00 PM ICT.

What are the business hours in London?

Standard business hours in London are 9:00 AM - 5:00 PM GMT.

What is the best time to schedule a call between Ho Chi Minh and London?

The best overlap for a call is when both cities are in business hours. Ho Chi Minh works 8:00 AM - 5:00 PM ICT and London works 9:00 AM - 5:00 PM GMT (-6h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Ho Chi Minh and London?

Ho Chi Minh uses VND (₫) while London uses GBP (£). Check current exchange rates when planning travel or business between these cities.

How do Ho Chi Minh and London compare in size?

Ho Chi Minh has a population of approximately 9 million (metro: 13 million), while London has approximately 8.8 million (metro: 14.8 million).

What are the major landmarks in Ho Chi Minh and London?

Ho Chi Minh is known for Notre-Dame Cathedral, War Remnants Museum, Ben Thanh Market. London is famous for Big Ben, Tower Bridge, Buckingham Palace.

Do Ho Chi Minh and London have stock exchanges?

Yes. Ho Chi Minh has the HOSE (Ho Chi Minh Stock Exchange) and London has the LSE (London Stock Exchange). The -6h time difference affects trading hour overlaps between these exchanges.

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 GMT timezone?

Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.

What is the UTC offset for GMT?

Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.

What should I know about the GMT timezone?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.