Convert Atlantic Daylight Time to French Guiana Time - Quick & Accurate
Updates live every second
Hover over any hour to see corresponding time in both zones
To schedule a meeting between ADT and GFT:
Pro Tip: Schedule calls during the overlap window for optimal convenience for both time zones
| ADT Time | GFT Time | Context |
|---|---|---|
| 12:00 AM | 01:00 AM | Midnight ADT |
| 01:00 AM | 02:00 AM | Late Night |
| 02:00 AM | 03:00 AM | Late Night |
| 03:00 AM | 04:00 AM | Late Night |
| 04:00 AM | 05:00 AM | Late Night |
| 05:00 AM | 06:00 AM | Late Night |
| 06:00 AM | 07:00 AM | Early Morning ADT |
| 07:00 AM | 08:00 AM | Night Time |
| 08:00 AM | 09:00 AM | Night Time |
| 09:00 AM | 10:00 AM | Work Starts ADT |
| 10:00 AM | 11:00 AM | Night Time |
| 11:00 AM | 12:00 PM | Night Time |
Halifax
America/Halifax
Cayenne
America/Cayenne
GFT (French Guiana Time) is 1 hours ahead of ADT (Atlantic Daylight Time). This means when it's 12:00 PM in Halifax (ADT), it's 1:00 PM in Cayenne (GFT).
The best time to call from ADT to GFT is during overlapping business hours. For ADT callers, schedule between 9:00 AM - 12:00 PM ADT to ensure both parties are within standard business hours.
The time difference may change during daylight saving transitions if one region observes DST while the other doesn't. Atlantic Daylight Time (UTC-3) and French Guiana Time (UTC-3) may have different DST schedules.
ADT includes cities like Halifax. GFT includes cities like Cayenne. Both time zones cover important business and cultural centers.
In 2025, DST in North America starts on March 9 at 2:00 AM and ends on November 2 at 2:00 AM. Other regions may have different DST schedules or not observe DST at all.