Offset
The time difference between Rio de Janeiro and Hanoi is 10 hours.
Rio de Janeiro (BRT) is behind Hanoi (ICT).
BRT: UTC-3
ICT: UTC+7
Neither Rio de Janeiro nor Hanoi is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Rio de Janeiro and Hanoi don't overlap on the same weekday. Hanoi is 10 hours ahead of Rio de Janeiro.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–10 AM in Rio de Janeiro (5 PM–8 PM in Hanoi) — suggest 8:00 AM Rio de Janeiro (6:00 PM Hanoi).
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.
Brazil
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- TiradentesTue, Apr 21
- Labour DayFri, May 1
- Corpus ChristiThu, Jun 4
- Independence DayMon, Sep 7
- Our Lady of AparecidaMon, Oct 12
- All Souls' DayMon, Nov 2
- Republic Proclamation DaySun, Nov 15
- Black Awareness DayFri, Nov 20
- Christmas DayFri, Dec 25
Vietnam
- New Year's DayThu, Jan 1
- Reunification DayThu, Apr 30
- Labour DayFri, May 1
- National DayWed, Sep 2
About these zones
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Hanoi uses Indochina Time (ICT). To call Vietnam, dial +84.
Hanoi is approximately 10,450 miles east of Rio de Janeiro.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Rio de Janeiro | Hanoi | Day |
|---|---|---|
| 12:00 am | 10:00 am | Same day |
| 1:00 am | 11:00 am | Same day |
| 2:00 am | 12:00 pm | Same day |
| 3:00 am | 1:00 pm | Same day |
| 4:00 am | 2:00 pm | Same day |
| 5:00 am | 3:00 pm | Same day |
| 6:00 am | 4:00 pm | Same day |
| 7:00 am | 5:00 pm | Same day |
| 8:00 am | 6:00 pm | Same day |
| 9:00 am | 7:00 pm | Same day |
| 10:00 am | 8:00 pm | Same day |
| 11:00 am | 9:00 pm | Same day |
| 12:00 pm | 10:00 pm | Same day |
| 1:00 pm | 11:00 pm | Same day |
| 2:00 pm | 12:00 am | +1 day |
| 3:00 pm | 1:00 am | +1 day |
| 4:00 pm | 2:00 am | +1 day |
| 5:00 pm | 3:00 am | +1 day |
| 6:00 pm | 4:00 am | +1 day |
| 7:00 pm | 5:00 am | +1 day |
| 8:00 pm | 6:00 am | +1 day |
| 9:00 pm | 7:00 am | +1 day |
| 10:00 pm | 8:00 am | +1 day |
| 11:00 pm | 9:00 am | +1 day |
Daylight saving time
Neither Rio de Janeiro nor Hanoi 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
- 6:29 AM
- Sunset
- 5:16 PM
- Day length
- 10h 46m
- Sunrise
- 5:15 AM
- Sunset
- 6:38 PM
- Day length
- 13h 22m
Cities in these zones
Other cities in Brasilia Time
Other cities in Indochina Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Airports in Indochina Time
- HAN
- BKK
- DMK
- HPH
Related conversions
Common conversions
- What is 9:00 am Rio de Janeiro in Hanoi?
- 9:00 am Rio de Janeiro is 7:00 pm Hanoi.
- What is 12:00 pm Rio de Janeiro in Hanoi?
- 12:00 pm Rio de Janeiro is 10:00 pm Hanoi.
- What is 12:30 pm Rio de Janeiro in Hanoi?
- 12:30 pm Rio de Janeiro is 10:30 pm Hanoi.
- What is 2:00 pm Rio de Janeiro in Hanoi?
- 2:00 pm Rio de Janeiro is 12:00 am Hanoi, the next day.
- What is 5:00 pm Rio de Janeiro in Hanoi?
- 5:00 pm Rio de Janeiro is 3:00 am Hanoi, the next day.
- What is 11:30 pm Rio de Janeiro in Hanoi?
- 11:30 pm Rio de Janeiro is 9:30 am Hanoi, the next day.