Offset
The time difference between Hanoi and Rio de Janeiro is 10 hours.
Hanoi (ICT) is ahead of Rio de Janeiro (BRT).
ICT: UTC+7
BRT: UTC-3
Neither Hanoi nor Rio de Janeiro is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Hanoi and Rio de Janeiro don't overlap on the same weekday. Rio de Janeiro 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 Rio de Janeiro) — suggest 6:00 PM Hanoi (8:00 AM Rio de Janeiro).
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
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
About these zones
Hanoi uses Indochina Time (ICT). To call Vietnam, dial +84.
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Rio de Janeiro is approximately 10,450 miles west of Hanoi.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Hanoi | Rio de Janeiro | 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 Rio de Janeiro 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
- 6:29 AM
- Sunset
- 5:16 PM
- Day length
- 10h 46m
Cities in these zones
Other cities in Indochina Time
Other cities in Brasilia 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 Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Related conversions
Common conversions
- What is 9:00 am Hanoi in Rio de Janeiro?
- 9:00 am Hanoi is 11:00 pm Rio de Janeiro, the previous day.
- What is 12:00 pm Hanoi in Rio de Janeiro?
- 12:00 pm Hanoi is 2:00 am Rio de Janeiro.
- What is 12:30 pm Hanoi in Rio de Janeiro?
- 12:30 pm Hanoi is 2:30 am Rio de Janeiro.
- What is 2:00 pm Hanoi in Rio de Janeiro?
- 2:00 pm Hanoi is 4:00 am Rio de Janeiro.
- What is 5:00 pm Hanoi in Rio de Janeiro?
- 5:00 pm Hanoi is 7:00 am Rio de Janeiro.
- What is 11:30 pm Hanoi in Rio de Janeiro?
- 11:30 pm Hanoi is 1:30 pm Rio de Janeiro.