Offset
The time difference between Buenos Aires and Adelaide is 12.5 hours.
Buenos Aires (ART) is behind Adelaide (ACST).
ART: UTC-3
ACST: UTC+9:30
Neither Buenos Aires nor Adelaide is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Buenos Aires and Adelaide don't overlap on the same weekday. Adelaide is 13 hours ahead of Buenos Aires.
With some flexibility, there are two workable windows outside standard hours, depending on which side takes the early or late slot:
- 7 AM–8 AM in Buenos Aires (7 PM–8 PM in Adelaide) — suggest 7:00 AM Buenos Aires (7:30 PM Adelaide).
- 7 PM–8 PM in Buenos Aires (7 AM–8 AM the next day in Adelaide) — suggest 7:00 PM Buenos Aires (7:30 AM Adelaide).
Either is an early start or late finish for one side, but workable for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Argentina
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Day of Remembrance for Truth and JusticeTue, Mar 24
- Day of the Veterans and Fallen of the Malvinas WarThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- May RevolutionMon, May 25
- Anniversary of the Passing of General Martín Miguel de GüemesMon, Jun 15
- General Manuel Belgrano Memorial DaySat, Jun 20
- Independence DayThu, Jul 9
- General José de San Martín Memorial DayMon, Aug 17
- Day of Respect for Cultural DiversityMon, Oct 12
- National Sovereignty DayMon, Nov 23
- Immaculate Conception DayTue, Dec 8
- Christmas DayFri, Dec 25
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Adelaide uses Australian Central Time (ACST, or ACDT). To call Australia, dial +61.
Adelaide is approximately 7,500 miles south of Buenos Aires.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Buenos Aires | Adelaide | Day |
|---|---|---|
| 12:00 am | 12:30 pm | Same day |
| 1:00 am | 1:30 pm | Same day |
| 2:00 am | 2:30 pm | Same day |
| 3:00 am | 3:30 pm | Same day |
| 4:00 am | 4:30 pm | Same day |
| 5:00 am | 5:30 pm | Same day |
| 6:00 am | 6:30 pm | Same day |
| 7:00 am | 7:30 pm | Same day |
| 8:00 am | 8:30 pm | Same day |
| 9:00 am | 9:30 pm | Same day |
| 10:00 am | 10:30 pm | Same day |
| 11:00 am | 11:30 pm | Same day |
| 12:00 pm | 12:30 am | +1 day |
| 1:00 pm | 1:30 am | +1 day |
| 2:00 pm | 2:30 am | +1 day |
| 3:00 pm | 3:30 am | +1 day |
| 4:00 pm | 4:30 am | +1 day |
| 5:00 pm | 5:30 am | +1 day |
| 6:00 pm | 6:30 am | +1 day |
| 7:00 pm | 7:30 am | +1 day |
| 8:00 pm | 8:30 am | +1 day |
| 9:00 pm | 9:30 am | +1 day |
| 10:00 pm | 10:30 am | +1 day |
| 11:00 pm | 11:30 am | +1 day |
Daylight saving time
Adelaide observes daylight saving time; Buenos Aires does not. The offset between the two zones changes when Adelaide transitions: on Sunday, October 4, 2026, clocks spring forward from ACST to ACDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 7:57 AM
- Sunset
- 5:50 PM
- Day length
- 9h 54m
- Sunrise
- 7:19 AM
- Sunset
- 5:12 PM
- Day length
- 9h 53m
Airports in these zones
Airports in Argentina Time
- AEP
- EZE
Airports in Australian Central Time
- ADL
Related conversions
Common conversions
- What is 9:00 am Buenos Aires in Adelaide?
- 9:00 am Buenos Aires is 9:30 pm Adelaide.
- What is 12:00 pm Buenos Aires in Adelaide?
- 12:00 pm Buenos Aires is 12:30 am Adelaide, the next day.
- What is 12:30 pm Buenos Aires in Adelaide?
- 12:30 pm Buenos Aires is 1:00 am Adelaide, the next day.
- What is 2:00 pm Buenos Aires in Adelaide?
- 2:00 pm Buenos Aires is 2:30 am Adelaide, the next day.
- What is 5:00 pm Buenos Aires in Adelaide?
- 5:00 pm Buenos Aires is 5:30 am Adelaide, the next day.
- What is 11:30 pm Buenos Aires in Adelaide?
- 11:30 pm Buenos Aires is 12:00 pm Adelaide, the next day.