Portugal to Buenos Aires
-4hPortugal
WESTSOURCEBuenos Aires
ARTGreen rows indicate typical business hours (9 AM - 5 PM)
WEST and ART on the World Map
The map below highlights the WEST (Western European Time) and ART (Argentina Time) timezone regions across the globe.
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.
ART – Argentina Time
UTC-03:00Argentina Time (ART) is the standard time for Argentina, 3 hours behind UTC.
- •Argentina does not observe daylight saving time.
- •Buenos Aires is one of the most visited cities in South America.
- •ART is the same offset as BRT (UTC-03:00).
About Buenos Aires
WikipediaBuenos Aires operates on Argentina Time (ART), UTC-3. As South America's most European city, Buenos Aires coordinates with Brazilian markets in the same timezone.
The Teatro Colón is considered one of the best opera houses in the world for acoustics.
Everything You Need to Know About Portugal and Buenos Aires Time
Portugal runs on Western European Summer Time (WEST) at UTC+01:00, currently observing daylight saving time. Buenos Aires runs on Argentina Standard Time (ART) at UTC-03:00. That puts Portugal 4 hours behind Buenos Aires — a difference of -4h at the current offsets.
In practice, when it is 9:00 AM in Portugal it is 5:00 AM in Buenos Aires. Midnight in Portugal is 8:00 PM in Buenos Aires.Portugal observes daylight saving time while Buenos Aires does not, so the gap narrows or widens by an hour part of the year.
Portugal to Buenos Aires time conversion table
| Portugal (WEST) | Buenos Aires (ART) | Day |
|---|---|---|
| 12:00 AM | 8:00 PM | previous day |
| 6:00 AM | 2:00 AM | same day |
| 7:00 AM | 3:00 AM | same day |
| 8:00 AM | 4:00 AM | same day |
| 9:00 AM | 5:00 AM | same day |
| 12:00 PM | 8:00 AM | same day |
| 3:00 PM | 11:00 AM | same day |
| 5:00 PM | 1:00 PM | same day |
| 6:00 PM | 2:00 PM | same day |
| 9:00 PM | 5:00 PM | same day |
Why people convert Portugal to Buenos Aires time
- Scheduling a call from Portugal to Buenos Aires: a 10:00 AM start in Portugal lands at 6:00 AM in Buenos Aires, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Portugal and Buenos Aires are inside the 9-to-5 working day between 1:00 PM and 5:00 PM WEST time (9:00 AM–1:00 PM ART). That is roughly 4 hours of usable overlap.
- Booking travel or deliveries: tracking Buenos Aires local time against Portugal keeps pickup windows and arrival estimates honest across the -4h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM WEST" is unambiguous; "3 PM" across a -4h gap is not.
- Block 1:00 PM–5:00 PM WEST as the recurring meeting window if you work primarily from Portugal and need Buenos Aires colleagues present.
- Portugal: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -4h gap.
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).
About ART (Argentina Time)
Argentina Time (ART) is the time zone used throughout Argentina. Argentina does not observe daylight saving time. ART shares the same offset as Brasilia Time (BRT) and Uruguay's UYT.
Best time to call between Portugal and Buenos Aires
Both Portugal and Buenos Aires sit inside the 9 AM – 5 PM working day between 1:00 PM–5:00 PM WEST, which is 9:00 AM–1:00 PM ART. That gives roughly 4 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Portugal and Buenos Aires overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.
Portugal is 4 hours behind Buenos Aires (WEST UTC+01:00 → ART UTC-03:00). The shared working window is 1:00 PM–5:00 PM WEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Portugal
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Buenos Aires
Does not observe DST
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 Portugal and Buenos Aires?
Portugal (WEST, UTC+01:00) is 4 hours behind Buenos Aires (ART, UTC-03:00). The gap is currently -4h.
How do I convert Portugal time to Buenos Aires time?
Add -4h to Portugal local time. For example, 9:00 AM in Portugal is 5:00 AM in Buenos Aires.
What time is it in Buenos Aires right now?
Buenos Aires uses ART at UTC-03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h offset from Portugal.
What is the best time to call Buenos Aires from Portugal?
Call between 1:00 PM and 5:00 PM WEST — that maps to 9:00 AM–1:00 PM ART and keeps both parties inside the working day.
Which is behind, Portugal or Buenos Aires?
Portugal is 4 hours behind Buenos Aires. When it is 12:00 PM in Portugal it is 8:00 AM in Buenos Aires.
Do Portugal and Buenos Aires use different time zones?
Portugal (Portugal) uses WEST at UTC+01:00, while Buenos Aires (Argentina) uses ART at UTC-03:00. The IANA identifiers are Europe/Lisbon and America/Buenos_Aires.
Does daylight saving time affect the Portugal–Buenos Aires difference?
Yes at the moment: Portugal is on daylight saving time and Buenos Aires is not, so the -4h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Portugal's time zone?
WEST also covers Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.
Which countries use WEST, Portugal's zone?
WEST is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
Is there a day difference between Portugal and Buenos Aires?
Not normally. The -4h gap only pushes the date over the previous day.
What is the time difference between Portugal and Buenos Aires?
Buenos Aires is -4h from Portugal.
What timezone is Portugal in?
Portugal operates on its local timezone.
What timezone is Buenos Aires in?
Buenos Aires operates on Argentina Time (ART), UTC-3. As South America's most European city, Buenos Aires coordinates with Brazilian markets in the same timezone.
What are the business hours in Buenos Aires?
Standard business hours in Buenos Aires are 9:00 AM - 6:00 PM ART.
Which countries use WET (Western European Time)?
WET is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
Does WET observe daylight saving time?
Yes, WET switches to WEST during summer months.
What are some interesting facts about WET?
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).
Which cities are in the ART timezone?
Major cities in the ART timezone include Buenos Aires, Córdoba, Rosario, Mendoza, La Plata, Tucumán.
What is the UTC offset for ART?
Argentina Time (ART) is at UTC-03:00.
What should I know about the ART timezone?
Argentina does not observe daylight saving time. Buenos Aires is one of the most visited cities in South America.
When is it midnight in Portugal, what time is it in Buenos Aires?
When it is 12:00 AM (midnight) in Portugal (WET), it is -4h later in Buenos Aires (ART).
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