GMT to BRT: GMT is 3 hours ahead of BRT
Greenwich Mean Time is 3 hours ahead of Brasilia Time, on every day of the year. It is 10:07 pm GMT in GMT and 7:07 pm BRT in Brasilia.
Convert a specific time from GMT to BRT
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between GMT and BRT?
Brasilia Time is 3 hours behind Greenwich Mean Time. To go from GMT to BRT you subtract 3 hours. That gap holds on all 365 days of 2026: neither zone moves its clocks.
GMT to BRT conversion table
Every hour of Thursday, September 24, 2026 in GMT, with the matching reading in Brasilia. 3 of the 24 hours land on a different calendar date in Brasilia, which is the part people get wrong when they schedule across this pair.
| GMT | GMT 24h | BRT | BRT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 9:00 pm | 21:00 | the previous day |
| 1:00 am | 01:00 | 10:00 pm | 22:00 | the previous day |
| 2:00 am | 02:00 | 11:00 pm | 23:00 | the previous day |
| 3:00 am | 03:00 | 12:00 am | 00:00 | same day |
| 4:00 am | 04:00 | 1:00 am | 01:00 | same day |
| 5:00 am | 05:00 | 2:00 am | 02:00 | same day |
| 6:00 am | 06:00 | 3:00 am | 03:00 | same day |
| 7:00 am | 07:00 | 4:00 am | 04:00 | same day |
| 8:00 am | 08:00 | 5:00 am | 05:00 | same day |
| 9:00 am | 09:00 | 6:00 am | 06:00 | same day |
| 10:00 am | 10:00 | 7:00 am | 07:00 | same day |
| 11:00 am | 11:00 | 8:00 am | 08:00 | same day |
| 12:00 pm | 12:00 | 9:00 am | 09:00 | same day |
| 1:00 pm | 13:00 | 10:00 am | 10:00 | same day |
| 2:00 pm | 14:00 | 11:00 am | 11:00 | same day |
| 3:00 pm | 15:00 | 12:00 pm | 12:00 | same day |
| 4:00 pm | 16:00 | 1:00 pm | 13:00 | same day |
| 5:00 pm | 17:00 | 2:00 pm | 14:00 | same day |
| 6:00 pm | 18:00 | 3:00 pm | 15:00 | same day |
| 7:00 pm | 19:00 | 4:00 pm | 16:00 | same day |
| 8:00 pm | 20:00 | 5:00 pm | 17:00 | same day |
| 9:00 pm | 21:00 | 6:00 pm | 18:00 | same day |
| 10:00 pm | 22:00 | 7:00 pm | 19:00 | same day |
| 11:00 pm | 23:00 | 8:00 pm | 20:00 | same day |
What are the best hours to schedule a call between GMT and BRT?
5 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 12:00 pm GMT to 5:00 pm GMT. In Brasilia that window reads 9:00 am to 2:00 pm. Outside it, one side is either not yet at their desk or already gone.
| GMT | BRT | Working hours | Note |
|---|---|---|---|
| 12:00 pm | 9:00 am | both sides | noon in GMT, mid morning in Brasilia |
| 1:00 pm | 10:00 am | both sides | afternoon in GMT, mid morning in Brasilia |
| 2:00 pm | 11:00 am | both sides | afternoon in GMT, mid morning in Brasilia |
| 3:00 pm | 12:00 pm | both sides | afternoon in GMT, noon in Brasilia |
| 4:00 pm | 1:00 pm | both sides | afternoon in GMT, afternoon in Brasilia |
Does daylight saving change GMT to BRT?
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Brasilia Time does not move its clocks at all, so its UTC-3 offset holds every day of the year.
Is GMT ahead of or behind BRT?
GMT is ahead of BRT by 3 hours: when it is 12:00 pm in GMT, it is 9:00 am in Brasilia. Neither Greenwich Mean Time nor Brasilia Time observes daylight saving, so the abbreviations never change and the gap between them is fixed.
Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. Brasilia Time covers Sao Paulo and Rio de Janeiro, fixed since Brazil dropped summer time in 2019. The identifiers behind them are Etc/GMT and America/Sao_Paulo, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is GMT in BRT?
- GMT is 3 hours ahead of BRT. 9:00 am GMT is 6:00 am BRT.
- How many hours ahead is BRT of GMT?
- BRT is 3 hours behind GMT.
- What time is it in Brasilia right now?
- 7:07 pm BRT on Thursday, September 24, 2026.
- When can GMT and Brasilia meet during working hours?
- Between 12:00 pm and 5:00 pm GMT, which is 9:00 am to 2:00 pm BRT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so GMT and BRT are the abbreviations genuinely in force today rather than a fixed assumption.
Other conversions
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