Greenwich Mean Time to Brasília Time
Convert times between Greenwich Mean Time (GMT, UTC+0:00) and Brasília Time (BRT, UTC-3:00). Brasília Time is 3 hours behind Greenwich Mean Time in standard time. During daylight saving time this difference changes to 4 hours.
UTC+0:00 / +1:00→UTC-3:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Greenwich Mean Time | GMT / BST | UTC+0:00 | UTC+1:00 | United Kingdom |
| Brasília Time | BRT | UTC-3:00 | — | Brazil |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (GMT → BRT)
| Greenwich Mean Time | Brasília Time |
|---|---|
| 12:00 AM GMT | 9:00 PM (prev day) BRT |
| 6:00 AM GMT | 3:00 AM BRT |
| 9:00 AM GMT | 6:00 AM BRT |
| 12:00 PM GMT | 9:00 AM BRT |
| 3:00 PM GMT | 12:00 PM BRT |
| 6:00 PM GMT | 3:00 PM BRT |
| 9:00 PM GMT | 6:00 PM BRT |
Summer (DST) Conversion (BST → BRT)
| Greenwich Mean Time (summer) | Brasília Time (summer) |
|---|---|
| 12:00 AM BST | 8:00 PM (prev day) BRT |
| 6:00 AM BST | 2:00 AM BRT |
| 9:00 AM BST | 5:00 AM BRT |
| 12:00 PM BST | 8:00 AM BRT |
| 3:00 PM BST | 11:00 AM BRT |
| 6:00 PM BST | 2:00 PM BRT |
| 9:00 PM BST | 5:00 PM BRT |
Daylight Saving Time (DST) Notes
- Greenwich Mean Time observes DST. Clocks advance 1 hour to BST (UTC+1:00) roughly from month 3 to 10.
- The offset difference shifts between 3h (standard) and 4h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert GMT to BRT?
Add (-3) hours to the GMT time to get BRT. For example, 9:00 AM GMT = 6:00 AM BRT.
What is the current UTC offset for Greenwich Mean Time?
Greenwich Mean Time is UTC+0:00 during standard time (GMT) and UTC+1:00 during summer daylight saving time (BST).
Is Brasília Time ahead or behind Greenwich Mean Time?
Brasília Time is 3 hours behind Greenwich Mean Time in standard time.
When is a good time to schedule a meeting between GMT and BRT?
A good overlap window is around 12:00 PM GMT / 9:00 AM BRT, which falls within business hours for both timezones.
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Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.