Buenos Aires to Sydney
+13hBuenos Aires
ARTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
ART and AEST on the World Map
The map below highlights the ART (Argentina Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
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).
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
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.
About Sydney
WikipediaSydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
Sydney is one of the first major cities to welcome the New Year.
Buenos Aires to Sydney Time Difference – Complete Guide
Buenos Aires runs on Argentina Standard Time (ART) at UTC-03:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Buenos Aires 13 hours ahead of Sydney — a difference of +13h at the current offsets.
In practice, when it is 9:00 AM in Buenos Aires it is 10:00 PM in Sydney. Midnight in Buenos Aires is 1:00 PM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Buenos Aires to Sydney time conversion table
| Buenos Aires (ART) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | same day |
| 6:00 AM | 7:00 PM | same day |
| 7:00 AM | 8:00 PM | same day |
| 8:00 AM | 9:00 PM | same day |
| 9:00 AM | 10:00 PM | same day |
| 12:00 PM | 1:00 AM | next day |
| 3:00 PM | 4:00 AM | next day |
| 5:00 PM | 6:00 AM | next day |
| 6:00 PM | 7:00 AM | next day |
| 9:00 PM | 10:00 AM | next day |
Why people convert Buenos Aires to Sydney time
- Scheduling a call from Buenos Aires to Sydney: a 10:00 AM start in Buenos Aires lands at 11:00 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +13h gap: Buenos Aires and Sydney have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Sydney is 10:00 PM in Buenos Aires.
- Booking travel or deliveries: tracking Sydney local time against Buenos Aires keeps pickup windows and arrival estimates honest across the +13h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ART" is unambiguous; "3 PM" across a +13h gap is not.
- With a +13h gap there is no shared 9-to-5 window, so alternate the early start: one week Buenos Aires takes the early slot, the next week Sydney does.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
Best time to call between Buenos Aires and Sydney
With a +13h offset there is no overlap inside a normal 9 AM – 5 PM day. Sydney opens at 9:00 AM AEST, which is 10:00 PM in Buenos Aires, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Buenos Aires and Sydney have no shared working hours because of the +13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Buenos Aires is 13 hours ahead of Sydney (ART UTC-03:00 → AEST UTC+10:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Buenos Aires
Does not observe DST
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 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 Buenos Aires and Sydney?
Buenos Aires (ART, UTC-03:00) is 13 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +13h.
How do I convert Buenos Aires time to Sydney time?
Add +13h to Buenos Aires local time. For example, 9:00 AM in Buenos Aires is 10:00 PM in Sydney.
What time is it in Sydney right now?
Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +13h offset from Buenos Aires.
What is the best time to call Sydney from Buenos Aires?
There is no shared working-hours window because of the +13h gap. The closest option is 1:00 PM in Buenos Aires, which is 2:00 AM in Sydney.
Which is ahead, Buenos Aires or Sydney?
Buenos Aires is 13 hours ahead of Sydney. When it is 12:00 PM in Buenos Aires it is 1:00 AM in Sydney.
Do Buenos Aires and Sydney use different time zones?
Buenos Aires (Argentina) uses ART at UTC-03:00, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are America/Buenos_Aires and Australia/Sydney.
Does daylight saving time affect the Buenos Aires–Sydney difference?
Neither zone observes daylight saving time, so the +13h offset between Buenos Aires and Sydney 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 Sydney?
Sometimes. The +13h gap is large enough that 8:00 PM or later in Buenos Aires already falls on the next day in Sydney.
What is the time difference between Buenos Aires and Sydney?
Sydney is +13h 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 Sydney in?
Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
What are the business hours in Buenos Aires?
Standard business hours in Buenos Aires are 9:00 AM - 6:00 PM ART.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
What is the best time to schedule a call between Buenos Aires and Sydney?
The best overlap for a call is when both cities are in business hours. Buenos Aires works 9:00 AM - 6:00 PM ART and Sydney works 9:00 AM - 5:00 PM AEST (+13h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Buenos Aires and Sydney?
Buenos Aires uses ARS ($) while Sydney uses AUD (A$). Check current exchange rates when planning travel or business between these cities.
How do Buenos Aires and Sydney compare in size?
Buenos Aires has a population of approximately 3 million (metro: 15.4 million), while Sydney has approximately 5.4 million (metro: 5.4 million).
What are the major landmarks in Buenos Aires and Sydney?
Buenos Aires is known for Casa Rosada, Teatro Colón, La Boca. Sydney is famous for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach.
Do Buenos Aires and Sydney have stock exchanges?
Yes. Buenos Aires has the BCBA (Buenos Aires Stock Exchange) and Sydney has the ASX (Australian Securities Exchange). The +13h time difference affects trading hour overlaps between these exchanges.
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 AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in Buenos Aires, what time is it in Sydney?
When it is 12:00 AM (midnight) in Buenos Aires (ART), it is +13h later in Sydney (AEST).
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