Vietnam to Portugal
-6hVietnam
ICTSOURCEPortugal
WESTGreen rows indicate typical business hours (9 AM - 5 PM)
ICT and WEST on the World Map
The map below highlights the ICT (Indochina Time) and WEST (Western European 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.
WET – Western European Time
UTC+00:00Western European Time (WET) is the time zone for Portugal, Morocco, and the Canary Islands, same as UTC+00:00.
- •Portugal is the only mainland European country in the WET time zone.
- •The Canary Islands are on WET despite being part of Spain (which uses CET).
- •WET is identical to GMT and UTC+00:00.
Understanding the -6h Gap: Vietnam vs Portugal
Vietnam runs on Indochina Time (ICT) at UTC+07:00. Portugal runs on Western European Summer Time (WEST) at UTC+01:00, also currently on daylight saving time. That puts Vietnam 6 hours behind Portugal — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Vietnam it is 3:00 AM in Portugal. Midnight in Vietnam is 6:00 PM in Portugal.Portugal observes daylight saving time while Vietnam does not, so the gap narrows or widens by an hour part of the year.
Vietnam to Portugal time conversion table
| Vietnam (ICT) | Portugal (WEST) | 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 Portugal time
- Scheduling a call from Vietnam to Portugal: a 10:00 AM start in Vietnam lands at 4:00 AM in Portugal, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Vietnam and Portugal are inside the 9-to-5 working day between 3:00 PM and 5:00 PM ICT time (9:00 AM–11:00 AM WEST). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Vietnam is 2:00 PM in Portugal makes it easy to avoid calling at 3 AM.
- 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 Portugal colleagues present.
- Portugal: 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 WET (Western European Time)
Western European Time (WET) is used in Portugal, the Canary Islands (Spain), Morocco, and several other locations. It is equivalent to GMT/UTC. During summer, Portugal and the Canary Islands switch to WEST (Western European Summer Time, UTC+01:00).
Best time to call between Vietnam and Portugal
Both Vietnam and Portugal 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 WEST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Vietnam and Portugal 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 Portugal (ICT UTC+07:00 → WEST 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
Portugal
☀ 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 Portugal?
Vietnam (ICT, UTC+07:00) is 6 hours behind Portugal (WEST, UTC+01:00). The gap is currently -6h.
How do I convert Vietnam time to Portugal time?
Add -6h to Vietnam local time. For example, 9:00 AM in Vietnam is 3:00 AM in Portugal.
What time is it in Portugal right now?
Portugal uses WEST 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 Portugal from Vietnam?
Call between 3:00 PM and 5:00 PM ICT — that maps to 9:00 AM–11:00 AM WEST and keeps both parties inside the working day.
Which is behind, Vietnam or Portugal?
Vietnam is 6 hours behind Portugal. When it is 12:00 PM in Vietnam it is 6:00 AM in Portugal.
Do Vietnam and Portugal use different time zones?
Vietnam (Vietnam) uses ICT at UTC+07:00, while Portugal (Portugal) uses WEST at UTC+01:00. The IANA identifiers are Asia/Ho_Chi_Minh and Europe/Lisbon.
Does daylight saving time affect the Vietnam–Portugal difference?
Yes at the moment: Portugal is on daylight saving time and Vietnam is not, so the -6h gap shifts by an hour when exactly one of them changes clocks.
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 Portugal?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Vietnam and Portugal?
Portugal is -6h from Vietnam.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
What timezone is Portugal in?
Portugal 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 WET timezone?
Major cities in the WET timezone include Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.
What is the UTC offset for WET?
Western European Time (WET) is at UTC+00:00. During daylight saving time, it shifts to WEST.
What should I know about the WET timezone?
Portugal is the only mainland European country in the WET time zone. The Canary Islands are on WET despite being part of Spain (which uses CET).
When is it midnight in Vietnam, what time is it in Portugal?
When it is 12:00 AM (midnight) in Vietnam (ICT), it is -6h later in Portugal (WET).
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