Offset
The time difference between Hanoi and Buenos Aires is 10 hours.
Hanoi (ICT) is ahead of Buenos Aires (ART).
ICT: UTC+7
ART: UTC-3
Neither Hanoi nor Buenos Aires is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Hanoi and Buenos Aires don't overlap on the same weekday. Buenos Aires is 10 hours behind Hanoi.
With some flexibility, there’s a workable window outside standard hours:
- 5 PM–8 PM in Hanoi (7 AM–10 AM in Buenos Aires) — suggest 6:00 PM Hanoi (8:00 AM Buenos Aires).
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.
Vietnam
- New Year's DayThu, Jan 1
- Reunification DayThu, Apr 30
- Labour DayFri, May 1
- National DayWed, Sep 2
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
Hanoi uses Indochina Time (ICT). To call Vietnam, dial +84.
Buenos Aires uses Argentina Time (ART). To call Argentina, dial +54.
Buenos Aires is approximately 11,100 miles southwest of Hanoi.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Hanoi | Buenos Aires | Day |
|---|---|---|
| 12:00 am | 2:00 pm | -1 day |
| 1:00 am | 3:00 pm | -1 day |
| 2:00 am | 4:00 pm | -1 day |
| 3:00 am | 5:00 pm | -1 day |
| 4:00 am | 6:00 pm | -1 day |
| 5:00 am | 7:00 pm | -1 day |
| 6:00 am | 8:00 pm | -1 day |
| 7:00 am | 9:00 pm | -1 day |
| 8:00 am | 10:00 pm | -1 day |
| 9:00 am | 11:00 pm | -1 day |
| 10:00 am | 12:00 am | Same day |
| 11:00 am | 1:00 am | Same day |
| 12:00 pm | 2:00 am | Same day |
| 1:00 pm | 3:00 am | Same day |
| 2:00 pm | 4:00 am | Same day |
| 3:00 pm | 5:00 am | Same day |
| 4:00 pm | 6:00 am | Same day |
| 5:00 pm | 7:00 am | Same day |
| 6:00 pm | 8:00 am | Same day |
| 7:00 pm | 9:00 am | Same day |
| 8:00 pm | 10:00 am | Same day |
| 9:00 pm | 11:00 am | Same day |
| 10:00 pm | 12:00 pm | Same day |
| 11:00 pm | 1:00 pm | Same day |
Daylight saving time
Neither Hanoi nor Buenos Aires 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
- 5:15 AM
- Sunset
- 6:38 PM
- Day length
- 13h 22m
- Sunrise
- 7:57 AM
- Sunset
- 5:50 PM
- Day length
- 9h 54m
Daylight overlap: 41m — 5:57 PM–6:38 PM in Hanoi (7:57 AM–8:38 AM in Buenos Aires). Both locations are in daylight during this window.
Cities in these zones
Other cities in Indochina Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Indochina Time
- HAN
- BKK
- DMK
- HPH
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am Hanoi in Buenos Aires?
- 9:00 am Hanoi is 11:00 pm Buenos Aires, the previous day.
- What is 12:00 pm Hanoi in Buenos Aires?
- 12:00 pm Hanoi is 2:00 am Buenos Aires.
- What is 12:30 pm Hanoi in Buenos Aires?
- 12:30 pm Hanoi is 2:30 am Buenos Aires.
- What is 2:00 pm Hanoi in Buenos Aires?
- 2:00 pm Hanoi is 4:00 am Buenos Aires.
- What is 5:00 pm Hanoi in Buenos Aires?
- 5:00 pm Hanoi is 7:00 am Buenos Aires.
- What is 11:30 pm Hanoi in Buenos Aires?
- 11:30 pm Hanoi is 1:30 pm Buenos Aires.