French Guiana is on the same time as Brasília right now. When it is 12:00 in Brasília, it is 12:00 in French Guiana. And it stays the same all year.
How many hours apart today
Right now French Guiana and Brasília show exactly the same time. Brazil's official time (UTC-3) matches the local time in French Guiana (UTC-3), so there is nothing to add or subtract: when it is 12:00 in Brasília, it is 12:00 in French Guiana.
Daylight saving time: does the gap change?
No. Under current rules neither French Guiana nor Brazil changes its clocks, so the difference of zero holds all year round: a meeting fixed at the same Brasília time lands at the same local time in every season, with no need to recheck in March or October. Brazil abolished daylight saving time in 2019, and it only matters for the gap when the other country changes its clocks. See the daylight saving time guide for the countries that do.
Conversion table: Brasília → French Guiana
| In Brasília | French Guiana |
|---|---|
| 00:00 | 00:00 |
| 02:00 | 02:00 |
| 04:00 | 04:00 |
| 06:00 | 06:00 |
| 08:00 | 08:00 |
| 10:00 | 10:00 |
| 12:00 | 12:00 |
| 14:00 | 14:00 |
| 16:00 | 16:00 |
| 18:00 | 18:00 |
| 20:00 | 20:00 |
| 22:00 | 22:00 |
Calculated with today's difference (0 hours).
For other dates and times, use the time zone converter.
Best times to call or hold a meeting
Assuming 9:00-18:00 office hours on both sides, the shared window runs from 09:00 to 18:00 Brasília time (09:00 to 18:00 in French Guiana), about 9 hours of overlap.
From Brazil, when it is 09:00 in Brasília, it is 09:00 in French Guiana (within office hours); at 12:00 it is 12:00 (within office hours); and at 18:00 it is 18:00 (within office hours).
In the other direction, a call made in French Guiana at 9:00 reaches Brasília at 09:00 (within office hours); at 12:00 it is 12:00 there (within office hours); and at 18:00, 18:00 (within office hours).
The same arithmetic helps with flights, whose departure and arrival times on tickets are always in the local time of each airport, and with live broadcasts announced in another time zone. Always convert the announced time before you plan. The meeting planner compares both clocks hour by hour.