Offset
The time difference between Muscat and Rio de Janeiro is 7 hours.
Muscat (GST) is ahead of Rio de Janeiro (BRT).
GST: UTC+4
BRT: UTC-3
Neither Muscat nor Rio de Janeiro is currently observing daylight saving time.
When to schedule
Business-hours overlap: 4 PM–5 PM in Muscat (9 AM–10 AM in Rio de Janeiro).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Muscat (9:00 AM Rio de Janeiro).
Note: the working week in Oman runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.
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
About these zones
Muscat uses Gulf Standard Time (GST). To call Oman, dial +968.
Rio de Janeiro uses Brasilia Time (BRT). To call Brazil, dial +55.
Rio de Janeiro is approximately 7,550 miles west of Muscat.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Muscat | Rio de Janeiro | Day |
|---|---|---|
| 12:00 am | 5:00 pm | -1 day |
| 1:00 am | 6:00 pm | -1 day |
| 2:00 am | 7:00 pm | -1 day |
| 3:00 am | 8:00 pm | -1 day |
| 4:00 am | 9:00 pm | -1 day |
| 5:00 am | 10:00 pm | -1 day |
| 6:00 am | 11:00 pm | -1 day |
| 7:00 am | 12:00 am | Same day |
| 8:00 am | 1:00 am | Same day |
| 9:00 am | 2:00 am | Same day |
| 10:00 am | 3:00 am | Same day |
| 11:00 am | 4:00 am | Same day |
| 12:00 pm | 5:00 am | Same day |
| 1:00 pm | 6:00 am | Same day |
| 2:00 pm | 7:00 am | Same day |
| 3:00 pm | 8:00 am | Same day |
| 4:00 pm | 9:00 am | Same day |
| 5:00 pm | 10:00 am | Same day |
| 6:00 pm | 11:00 am | Same day |
| 7:00 pm | 12:00 pm | Same day |
| 8:00 pm | 1:00 pm | Same day |
| 9:00 pm | 2:00 pm | Same day |
| 10:00 pm | 3:00 pm | Same day |
| 11:00 pm | 4:00 pm | Same day |
Daylight saving time
Neither Muscat 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
- 5:20 AM
- Sunset
- 6:53 PM
- Day length
- 13h 33m
- Sunrise
- 6:30 AM
- Sunset
- 5:16 PM
- Day length
- 10h 46m
Daylight overlap: 5h 23m — 1:30 PM–6:53 PM in Muscat (6:30 AM–11:53 AM in Rio de Janeiro). Both locations are in daylight during this window.
Cities in these zones
Other cities in Brasilia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Gulf Standard Time
- MCT
Airports in Brasilia Time
- CGH
- GRU
- GIG
- SDU
- CNF
- BSB
- CWB
- GYN
- POA
Related conversions
Common conversions
- What is 9:00 am Muscat in Rio de Janeiro?
- 9:00 am Muscat is 2:00 am Rio de Janeiro.
- What is 12:00 pm Muscat in Rio de Janeiro?
- 12:00 pm Muscat is 5:00 am Rio de Janeiro.
- What is 12:30 pm Muscat in Rio de Janeiro?
- 12:30 pm Muscat is 5:30 am Rio de Janeiro.
- What is 2:00 pm Muscat in Rio de Janeiro?
- 2:00 pm Muscat is 7:00 am Rio de Janeiro.
- What is 5:00 pm Muscat in Rio de Janeiro?
- 5:00 pm Muscat is 10:00 am Rio de Janeiro.
- What is 11:30 pm Muscat in Rio de Janeiro?
- 11:30 pm Muscat is 4:30 pm Rio de Janeiro.