Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

São Paulo to Buenos Aires

+0h

São Paulo

BRTSOURCE

Brazil · UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Buenos Aires

ART

Argentina · UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

São Paulo

Buenos Aires

12:00 AM

2:00 AM

4:00 AM

6:00 AM

8:00 AM

10:00 AM

12:00 PM

2:00 PM

4:00 PM

6:00 PM

8:00 PM

10:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

BRT and ART on the World Map

The map below highlights the BRT (Brasilia Time) and ART (Argentina Time) timezone regions across the globe.

BRT Zone

→

ART Zone

Explore all world timezones interactively →

BRT – Brasilia Time

UTC-03:00

Brasilia Time (BRT) is the time zone for eastern Brazil, 3 hours behind UTC.

Countries in BRT

Brazil (eastern)

Major Cities in BRT

São PauloRio de JaneiroBrasíliaBelo HorizonteSalvadorFortalezaRecifeCuritiba

Key Facts about BRT

•Brazil abolished daylight saving time in 2019.
•São Paulo is the largest city in the Southern Hemisphere.
•BRT is 2 hours ahead of EST.
•Brazil spans four different time zones.
•The B3 stock exchange in São Paulo operates on BRT.

Daylight Saving:No – UTC-03:00 year-round

Learn more about BRT on Wikipedia

ART – Argentina Time

UTC-03:00

Argentina Time (ART) is the standard time for Argentina, 3 hours behind UTC.

Countries in ART

Argentina

Major Cities in ART

Buenos AiresCórdobaRosarioMendozaLa PlataTucumán

Key Facts about ART

•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).

Daylight Saving:No – UTC-03:00 year-round

Learn more about ART on Wikipedia

About São Paulo

Wikipedia

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

Population:12.4 million

Metro:22.4 million

Business Hours:9:00 AM - 6:00 PM BRT

Currency:BRL (R$)

Stock Exchange:B3 (Brasil Bolsa Balcão)

Key Landmarks

Paulista AvenueIbirapuera ParkSão Paulo CathedralMASPPinacoteca

Did You Know?

The city has more helicopters than any other city in the world due to traffic congestion.

Learn more about BRT timezone →

About Buenos Aires

Wikipedia

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.

Population:3 million

Metro:15.4 million

Business Hours:9:00 AM - 6:00 PM ART

Currency:ARS ($)

Stock Exchange:BCBA (Buenos Aires Stock Exchange)

Key Landmarks

Casa RosadaTeatro ColónLa BocaRecoleta CemeteryObelisco

Did You Know?

The Teatro Colón is considered one of the best opera houses in the world for acoustics.

Learn more about ART timezone →

Understanding the +0h Gap: São Paulo vs Buenos Aires

São Paulo runs on Brasilia Standard Time (BRT) at UTC-03:00. Buenos Aires runs on Argentina Standard Time (ART) at UTC-03:00. That puts São Paulo no time difference Buenos Aires — a difference of +0h at the current offsets.

In practice, when it is 9:00 AM in São Paulo it is 9:00 AM in Buenos Aires. Midnight in São Paulo is 12:00 AM in Buenos Aires. Neither zone observes daylight saving time, so the offset between them stays constant all year.

São Paulo to Buenos Aires time conversion table

São Paulo (BRT)	Buenos Aires (ART)	Day
12:00 AM	12:00 AM	same day
6:00 AM	6:00 AM	same day
7:00 AM	7:00 AM	same day
8:00 AM	8:00 AM	same day
9:00 AM	9:00 AM	same day
12:00 PM	12:00 PM	same day
3:00 PM	3:00 PM	same day
5:00 PM	5:00 PM	same day
6:00 PM	6:00 PM	same day
9:00 PM	9:00 PM	same day

Why people convert São Paulo to Buenos Aires time

Scheduling a call from São Paulo to Buenos Aires: a 10:00 AM start in São Paulo lands at 10:00 AM in Buenos Aires, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both São Paulo and Buenos Aires are inside the 9-to-5 working day between 9:00 AM and 5:00 PM BRT time (9:00 AM–5:00 PM ART). That is roughly 8 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in São Paulo is 8:00 PM in Buenos Aires makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM BRT" is unambiguous; "3 PM" across a +0h gap is not.
Block 9:00 AM–5:00 PM BRT as the recurring meeting window if you work primarily from São Paulo and need Buenos Aires colleagues present.

About BRT (Brasilia Time)

Brasilia Time (BRT) is the standard time in the most populous regions of Brazil, including São Paulo, Rio de Janeiro, and the capital Brasília. Brazil abolished daylight saving time in 2019, so BRT is now observed year-round in these regions. Brazil spans four time zones in total.

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 São Paulo and Buenos Aires

Both São Paulo and Buenos Aires sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM BRT, which is 9:00 AM–5:00 PM ART. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

São Paulo and Buenos Aires share 8 hours of working-hours overlap (9:00 AM–5:00 PM BRT), so scheduling a live meeting is straightforward.

São Paulo is no time difference Buenos Aires (BRT UTC-03:00 → ART UTC-03:00). The shared working window is 9:00 AM–5:00 PM BRT. Remember to re-check around daylight-saving transitions.

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 São Paulo and Buenos Aires?

São Paulo (BRT, UTC-03:00) is no time difference Buenos Aires (ART, UTC-03:00). The gap is currently +0h.

How do I convert São Paulo time to Buenos Aires time?

Add +0h to São Paulo local time. For example, 9:00 AM in São Paulo is 9:00 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 +0h offset from São Paulo.

What is the best time to call Buenos Aires from São Paulo?

Call between 9:00 AM and 5:00 PM BRT — that maps to 9:00 AM–5:00 PM ART and keeps both parties inside the working day.

Which is ahead, São Paulo or Buenos Aires?

São Paulo and Buenos Aires are currently on the same clock.

Do São Paulo and Buenos Aires use different time zones?

São Paulo (Brazil) uses BRT at UTC-03:00, while Buenos Aires (Argentina) uses ART at UTC-03:00. The IANA identifiers are America/Sao_Paulo and America/Buenos_Aires.

Does daylight saving time affect the São Paulo–Buenos Aires difference?

Neither zone observes daylight saving time, so the +0h offset between São Paulo and Buenos Aires is fixed all year.

Which other cities share São Paulo's time zone?

BRT also covers São Paulo, Rio de Janeiro, Brasília, Belo Horizonte, Salvador, Fortaleza, Recife, Curitiba.

Which countries use BRT, São Paulo's zone?

BRT is used in Brazil (eastern).

What is the time difference between São Paulo and Buenos Aires?

Buenos Aires is +0h from São Paulo.

What timezone is São Paulo in?

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

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 São Paulo?

Standard business hours in São Paulo are 9:00 AM - 6:00 PM BRT.

What are the business hours in Buenos Aires?

Standard business hours in Buenos Aires are 9:00 AM - 6:00 PM ART.

What is the best time to schedule a call between São Paulo and Buenos Aires?

The best overlap for a call is when both cities are in business hours. São Paulo works 9:00 AM - 6:00 PM BRT and Buenos Aires works 9:00 AM - 6:00 PM ART (+0h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in São Paulo and Buenos Aires?

São Paulo uses BRL (R$) while Buenos Aires uses ARS ($). Check current exchange rates when planning travel or business between these cities.

How do São Paulo and Buenos Aires compare in size?

São Paulo has a population of approximately 12.4 million (metro: 22.4 million), while Buenos Aires has approximately 3 million (metro: 15.4 million).

What are the major landmarks in São Paulo and Buenos Aires?

São Paulo is known for Paulista Avenue, Ibirapuera Park, São Paulo Cathedral. Buenos Aires is famous for Casa Rosada, Teatro Colón, La Boca.

Do São Paulo and Buenos Aires have stock exchanges?

Yes. São Paulo has the B3 (Brasil Bolsa Balcão) and Buenos Aires has the BCBA (Buenos Aires Stock Exchange). The +0h time difference affects trading hour overlaps between these exchanges.