Puerto Rico to GMT time conversion
GMT is 4 hours ahead of Puerto Rico.
Time difference with your location
Puerto Rico is 4 hours behind UTC. Compare with your local time →
Choose a date and time
Choose the local time in Puerto Rico to convert it to GMT on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · Puerto Rico → GMT
This table converts each hour in Puerto Rico to GMT on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| Puerto Rico | GMT | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 04:004:00 AM | |
| 01:001:00 AM | 05:005:00 AM | |
| 02:002:00 AM | 06:006:00 AM | |
| 03:003:00 AM | 07:007:00 AM | |
| 04:004:00 AM | 08:008:00 AM | |
| 05:005:00 AM | 09:009:00 AM | |
| 06:006:00 AM | 10:0010:00 AM | |
| 07:007:00 AM | 11:0011:00 AM | |
| 08:008:00 AM | 12:0012:00 PM | ✓ |
| 09:009:00 AM | 13:001:00 PM | ✓ |
| 10:0010:00 AM | 14:002:00 PM | ✓ |
| 11:0011:00 AM | 15:003:00 PM | ✓ |
| 12:0012:00 PM | 16:004:00 PM | ✓ |
| 13:001:00 PM | 17:005:00 PM | ✓ |
| 14:002:00 PM | 18:006:00 PM | |
| 15:003:00 PM | 19:007:00 PM | |
| 16:004:00 PM | 20:008:00 PM | |
| 17:005:00 PM | 21:009:00 PM | |
| 18:006:00 PM | 22:0010:00 PM | |
| 19:007:00 PM | 23:0011:00 PM | |
| 20:008:00 PM | 00:0012:00 AM +1 day | |
| 21:009:00 PM | 01:001:00 AM +1 day | |
| 22:0010:00 PM | 02:002:00 AM +1 day | |
| 23:0011:00 PM | 03:003:00 AM +1 day |
Quick conversion examples
These examples use Puerto Rico (UTC-4) and GMT (UTC+0); choosing a date applies the local clock changes.
Conversion formula: GMT = Puerto Rico + 4h · UTC = Puerto Rico + 4h.
| Puerto Rico | GMT |
|---|---|
| 6:00 AM Puerto Rico | = 10:00 AM GMT |
| 7:00 AM Puerto Rico | = 11:00 AM GMT |
| 8:00 AM Puerto Rico | = 12:00 PM GMT |
| 9:00 AM Puerto Rico | = 1:00 PM GMT |
| 10:00 AM Puerto Rico | = 2:00 PM GMT |
| 12:00 PM Puerto Rico | = 4:00 PM GMT |
| 3:00 PM Puerto Rico | = 7:00 PM GMT |
| 5:00 PM Puerto Rico | = 9:00 PM GMT |
| 6:00 PM Puerto Rico | = 10:00 PM GMT |
| 8:00 PM Puerto Rico | = 12:00 AM GMT (+1 day) |
Overlapping meeting hours
The 08:00–18:00 working day in Puerto Rico and GMT overlaps for 6 hours on 2026-10-21.
- Shared working hours
- 08:00–14:00 Puerto Rico · 12:00–18:00 GMT
Clock changes on both sides, 2026–2028
Puerto Rico and GMT have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | Puerto Rico | GMT |
|---|---|---|
| 2026 | No clock changes; UTC-4 all year. | No clock changes; UTC+0 all year. |
| 2027 | No clock changes; UTC-4 all year. | No clock changes; UTC+0 all year. |
| 2028 | No clock changes; UTC-4 all year. | No clock changes; UTC+0 all year. |
The difference between Puerto Rico and GMT stays constant throughout 2026–2028: UTC is 4 hours ahead of Puerto Rico.
Frequently asked questions
What time is 9 AM Puerto Rico in GMT?
9:00 AM Puerto Rico = 1:00 PM GMT, using UTC-4 and UTC+0. Choose a date above for the seasonal local time.
Does the time difference between Puerto Rico and GMT change during the year?
No. Throughout 2026–2028: GMT is 4 hours ahead of Puerto Rico.
How do I tell whether it is day or night in GMT?
Read the UTC clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between Puerto Rico and GMT?
The shared 08:00–18:00 working window is 08:00–14:00 Puerto Rico / 12:00–18:00 UTC, a total of 6 hours.
What is the time difference between Puerto Rico and GMT now?
Right now, UTC is 4 hours ahead of Puerto Rico. Conversion formula: GMT = Puerto Rico + 4h · UTC = Puerto Rico + 4h.