Offset
The time difference between Greenwich Mean Time and Buenos Aires is 4 hours.
Greenwich Mean Time (BST) is ahead of Buenos Aires (ART).
BST: UTC+1
ART: UTC-3
Greenwich Mean Time is currently observing daylight saving time; Buenos Aires is not.
When to schedule
Business-hours overlap: 1 PM–5 PM in Greenwich Mean Time (9 AM–1 PM in Buenos Aires).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Greenwich Mean Time (11:00 AM 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.
United Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
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
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Buenos Aires is approximately 6,900 miles southwest of Greenwich Mean Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| GMT | Buenos Aires | Day |
|---|---|---|
| 12:00 am | 8:00 pm | -1 day |
| 1:00 am | 9:00 pm | -1 day |
| 2:00 am | 10:00 pm | -1 day |
| 3:00 am | 11:00 pm | -1 day |
| 4:00 am | 12:00 am | Same day |
| 5:00 am | 1:00 am | Same day |
| 6:00 am | 2:00 am | Same day |
| 7:00 am | 3:00 am | Same day |
| 8:00 am | 4:00 am | Same day |
| 9:00 am | 5:00 am | Same day |
| 10:00 am | 6:00 am | Same day |
| 11:00 am | 7:00 am | Same day |
| 12:00 pm | 8:00 am | Same day |
| 1:00 pm | 9:00 am | Same day |
| 2:00 pm | 10:00 am | Same day |
| 3:00 pm | 11:00 am | Same day |
| 4:00 pm | 12:00 pm | Same day |
| 5:00 pm | 1:00 pm | Same day |
| 6:00 pm | 2:00 pm | Same day |
| 7:00 pm | 3:00 pm | Same day |
| 8:00 pm | 4:00 pm | Same day |
| 9:00 pm | 5:00 pm | Same day |
| 10:00 pm | 6:00 pm | Same day |
| 11:00 pm | 7:00 pm | Same day |
Daylight saving time
Greenwich Mean Time observes daylight saving time; Buenos Aires does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 7:37 AM
- Sunset
- 5:55 PM
- Day length
- 10h 18m
- Sunrise
- 6:05 AM
- Sunset
- 7:13 PM
- Day length
- 13h 8m
Cities in these zones
Cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am GMT in Buenos Aires?
- 9:00 am GMT is 5:00 am Buenos Aires.
- What is 12:00 pm GMT in Buenos Aires?
- 12:00 pm GMT is 8:00 am Buenos Aires.
- What is 12:30 pm GMT in Buenos Aires?
- 12:30 pm GMT is 8:30 am Buenos Aires.
- What is 2:00 pm GMT in Buenos Aires?
- 2:00 pm GMT is 10:00 am Buenos Aires.
- What is 5:00 pm GMT in Buenos Aires?
- 5:00 pm GMT is 1:00 pm Buenos Aires.
- What is 11:30 pm GMT in Buenos Aires?
- 11:30 pm GMT is 7:30 pm Buenos Aires.