Offset
The time difference between Buenos Aires and Colombo is 8.5 hours.
Buenos Aires (ART) is behind Colombo (IST).
ART: UTC-3
IST: UTC+5:30
Neither Buenos Aires nor Colombo is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Buenos Aires and Colombo don't overlap on the same weekday. Colombo is 9 hours ahead of Buenos Aires.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–12 PM in Buenos Aires (3 PM–8 PM in Colombo) — suggest 9:00 AM Buenos Aires (5:30 PM Colombo).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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
About these zones
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Colombo uses India Standard Time (IST). To call Sri Lanka, dial +94.
Colombo is approximately 9,150 miles southeast of Buenos Aires.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Buenos Aires | Colombo | Day |
|---|---|---|
| 12:00 am | 8:30 am | Same day |
| 1:00 am | 9:30 am | Same day |
| 2:00 am | 10:30 am | Same day |
| 3:00 am | 11:30 am | Same day |
| 4:00 am | 12:30 pm | Same day |
| 5:00 am | 1:30 pm | Same day |
| 6:00 am | 2:30 pm | Same day |
| 7:00 am | 3:30 pm | Same day |
| 8:00 am | 4:30 pm | Same day |
| 9:00 am | 5:30 pm | Same day |
| 10:00 am | 6:30 pm | Same day |
| 11:00 am | 7:30 pm | Same day |
| 12:00 pm | 8:30 pm | Same day |
| 1:00 pm | 9:30 pm | Same day |
| 2:00 pm | 10:30 pm | Same day |
| 3:00 pm | 11:30 pm | Same day |
| 4:00 pm | 12:30 am | +1 day |
| 5:00 pm | 1:30 am | +1 day |
| 6:00 pm | 2:30 am | +1 day |
| 7:00 pm | 3:30 am | +1 day |
| 8:00 pm | 4:30 am | +1 day |
| 9:00 pm | 5:30 am | +1 day |
| 10:00 pm | 6:30 am | +1 day |
| 11:00 pm | 7:30 am | +1 day |
Daylight saving time
Neither Buenos Aires nor Colombo observes daylight saving time. The offset between these zones remains constant year-round.
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
- 5:55 AM
- Sunset
- 6:26 PM
- Day length
- 12h 31m
Daylight overlap: 1h 59m — 7:57 AM–9:56 AM in Buenos Aires (4:27 PM–6:26 PM in Colombo). Both locations are in daylight during this window.
Airports in these zones
Airports in Argentina Time
- AEP
- EZE
Airports in India Standard Time
- CMB
- RML
Related conversions
Common conversions
- What is 9:00 am Buenos Aires in Colombo?
- 9:00 am Buenos Aires is 5:30 pm Colombo.
- What is 12:00 pm Buenos Aires in Colombo?
- 12:00 pm Buenos Aires is 8:30 pm Colombo.
- What is 12:30 pm Buenos Aires in Colombo?
- 12:30 pm Buenos Aires is 9:00 pm Colombo.
- What is 2:00 pm Buenos Aires in Colombo?
- 2:00 pm Buenos Aires is 10:30 pm Colombo.
- What is 5:00 pm Buenos Aires in Colombo?
- 5:00 pm Buenos Aires is 1:30 am Colombo, the next day.
- What is 11:30 pm Buenos Aires in Colombo?
- 11:30 pm Buenos Aires is 8:00 am Colombo, the next day.