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).

Buenos Aires to EDT

-1h

Buenos Aires

ARTSOURCE

Argentina · UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

EDT

UTC-04:00☀ DST active

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Buenos Aires

EDT

12:00 AM

11:00 PM-1

2:00 AM

1:00 AM

4:00 AM

3:00 AM

6:00 AM

5:00 AM

8:00 AM

7:00 AM

10:00 AM

9:00 AM

12:00 PM

11:00 AM

2:00 PM

1:00 PM

4:00 PM

3:00 PM

6:00 PM

5:00 PM

8:00 PM

7:00 PM

10:00 PM

9:00 PM

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

ART and EDT on the World Map

The map below highlights the ART (Argentina Time) and EDT (Eastern Daylight Time) timezone regions across the globe.

ART Zone

→

EDT Zone

Explore all world timezones interactively →

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

EDT – Eastern Daylight Time

UTC-04:00

Eastern Daylight Time (EDT) is the daylight saving time observed in the Eastern Time Zone, 4 hours behind UTC.

Countries in EDT

United States (Eastern)Canada (Ontario, Quebec)BahamasHaitiTurks and Caicos

Major Cities in EDT

New York CityWashington D.C.TorontoMiamiPhiladelphiaAtlantaBostonMontreal

Key Facts about EDT

•EDT is observed from the second Sunday of March to the first Sunday of November.
•During EDT, the US East Coast is only 4 hours behind London (instead of 5).
•Not all EST locations switch to EDT – Panama and Jamaica stay on EST year-round.

Daylight Saving:Yes – switches to EST

Learn more about EDT on Wikipedia

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 -1h Gap: Buenos Aires vs EDT

Buenos Aires runs on Argentina Standard Time (ART) at UTC-03:00. EDT runs on Eastern Daylight Time (EDT) at UTC-04:00. That puts Buenos Aires 1 hour behind EDT — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in Buenos Aires it is 8:00 AM in EDT. Midnight in Buenos Aires is 11:00 PM in EDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Buenos Aires to EDT time conversion table

Buenos Aires (ART)	EDT (EDT)	Day
12:00 AM	11:00 PM	previous day
6:00 AM	5:00 AM	same day
7:00 AM	6:00 AM	same day
8:00 AM	7:00 AM	same day
9:00 AM	8:00 AM	same day
12:00 PM	11:00 AM	same day
3:00 PM	2:00 PM	same day
5:00 PM	4:00 PM	same day
6:00 PM	5:00 PM	same day
9:00 PM	8:00 PM	same day

Why people convert Buenos Aires to EDT time

Scheduling a call from Buenos Aires to EDT: a 10:00 AM start in Buenos Aires lands at 9:00 AM in EDT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Buenos Aires and EDT are inside the 9-to-5 working day between 10:00 AM and 5:00 PM ART time (9:00 AM–4:00 PM EDT). That is roughly 7 hours of usable overlap.
Coordinating a Buenos Aires-based team with EDT contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM ART" is unambiguous; "3 PM" across a -1h gap is not.
Block 10:00 AM–5:00 PM ART as the recurring meeting window if you work primarily from Buenos Aires and need EDT colleagues present.

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.

About EDT (Eastern Daylight Time)

Eastern Daylight Time (EDT) is used during the summer months (second Sunday of March to the first Sunday of November) in the Eastern Time Zone. During EDT, clocks are advanced by one hour to take advantage of longer daylight hours. Not all locations in the Eastern Time Zone observe DST – Panama, Jamaica, and most of the Caribbean remain on EST year-round.

Best time to call between Buenos Aires and EDT

Both Buenos Aires and EDT sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM ART, which is 9:00 AM–4:00 PM EDT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Buenos Aires and EDT share 7 hours of working-hours overlap (10:00 AM–5:00 PM ART), so scheduling a live meeting is straightforward.

Buenos Aires is 1 hour behind EDT (ART UTC-03:00 → EDT UTC-04:00). The shared working window is 10:00 AM–5:00 PM ART. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Buenos Aires

Does not observe DST

EDT

☀ Currently in DST

Standard: UTC-05:00 · DST: UTC-04:00

Clocks fall back on Sun, Nov 1, 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 Buenos Aires and EDT?

Buenos Aires (ART, UTC-03:00) is 1 hour behind EDT (EDT, UTC-04:00). The gap is currently -1h.

How do I convert Buenos Aires time to EDT time?

Add -1h to Buenos Aires local time. For example, 9:00 AM in Buenos Aires is 8:00 AM in EDT.

What time is it in EDT right now?

EDT uses EDT at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Buenos Aires.

What is the best time to call EDT from Buenos Aires?

Call between 10:00 AM and 5:00 PM ART — that maps to 9:00 AM–4:00 PM EDT and keeps both parties inside the working day.

Which is behind, Buenos Aires or EDT?

Buenos Aires is 1 hour behind EDT. When it is 12:00 PM in Buenos Aires it is 11:00 AM in EDT.

Do Buenos Aires and EDT use different time zones?

Buenos Aires (Argentina) uses ART at UTC-03:00, while EDT uses EDT at UTC-04:00. The IANA identifiers are America/Buenos_Aires and America/New_York.

Does daylight saving time affect the Buenos Aires–EDT difference?

Neither zone observes daylight saving time, so the -1h offset between Buenos Aires and EDT is fixed all year.

Which other cities share Buenos Aires's time zone?

ART also covers Buenos Aires, Córdoba, Rosario, Mendoza, La Plata, Tucumán.

Which countries use ART, Buenos Aires's zone?

ART is used in Argentina.

Is there a day difference between Buenos Aires and EDT?

Not normally. The -1h gap only pushes the date over the previous day.

What is the time difference between Buenos Aires and EDT?

EDT is -1h from Buenos Aires.

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 timezone is EDT in?

EDT operates on its local 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 ART (Argentina Time)?

ART is used in Argentina.

Does ART observe daylight saving time?

No, ART does not observe daylight saving time and remains at UTC-03:00 year-round.

What are some interesting facts about ART?

Argentina does not observe daylight saving time. Buenos Aires is one of the most visited cities in South America.

Which cities are in the EDT timezone?

Major cities in the EDT timezone include New York City, Washington D.C., Toronto, Miami, Philadelphia, Atlanta, Boston, Montreal.

What is the UTC offset for EDT?

Eastern Daylight Time (EDT) is at UTC-04:00. During daylight saving time, it shifts to EST.

What should I know about the EDT timezone?

EDT is observed from the second Sunday of March to the first Sunday of November. During EDT, the US East Coast is only 4 hours behind London (instead of 5).