Offset
The time difference between Santiago and Buenos Aires is 1 hour.
Santiago (CLT) is behind Buenos Aires (ART).
CLT: UTC-4
ART: UTC-3
Neither Santiago nor Buenos Aires is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–4 PM in Santiago (10 AM–5 PM in Buenos Aires).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM Santiago (1:00 PM Buenos Aires).
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.
Chile
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Holy SaturdaySat, Apr 4
- Labour DayFri, May 1
- Navy DayThu, May 21
- National Day of Indigenous PeoplesSun, Jun 21
- Saint Peter and Saint PaulMon, Jun 29
- Our Lady of Mount CarmelThu, Jul 16
- Assumption of MarySat, Aug 15
- National holidayFri, Sep 18
- Army DaySat, Sep 19
- Columbus DayMon, Oct 12
- Reformation DaySat, Oct 31
- All Saints DaySun, Nov 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
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
Santiago uses Chile Time (CLT, or CLST). To call Chile, dial +56.
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Buenos Aires is approximately 700 miles east of Santiago.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Santiago | Buenos Aires | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Santiago observes daylight saving time; Buenos Aires does not. The offset between the two zones changes when Santiago transitions: on Sunday, September 6, 2026, clocks spring forward from CLT to CLST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 7:41 AM
- Sunset
- 5:43 PM
- Day length
- 10h 2m
- Sunrise
- 7:55 AM
- Sunset
- 5:51 PM
- Day length
- 9h 56m
Daylight overlap: 9h 10m — 7:41 AM–4:51 PM in Santiago (8:41 AM–5:51 PM in Buenos Aires). Both locations are in daylight during this window.
Airports in these zones
Airports in Chile Time
- SCL
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am Santiago in Buenos Aires?
- 9:00 am Santiago is 10:00 am Buenos Aires.
- What is 12:00 pm Santiago in Buenos Aires?
- 12:00 pm Santiago is 1:00 pm Buenos Aires.
- What is 12:30 pm Santiago in Buenos Aires?
- 12:30 pm Santiago is 1:30 pm Buenos Aires.
- What is 2:00 pm Santiago in Buenos Aires?
- 2:00 pm Santiago is 3:00 pm Buenos Aires.
- What is 5:00 pm Santiago in Buenos Aires?
- 5:00 pm Santiago is 6:00 pm Buenos Aires.
- What is 11:30 pm Santiago in Buenos Aires?
- 11:30 pm Santiago is 12:30 am Buenos Aires, the next day.