Guaynabo to Buenos Aires: time difference
Buenos Aires is 1 h ahead of Guaynabo. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Guaynabo 13:16 1:16 PM Buenos Aires 14:16 2:16 PM You –:–
13:16 1:16 PM
Atlantic Standard Time · UTC-4
☀️ 06:19 · 🌙 18:02
14:16 2:16 PM
Argentina Standard Time · UTC-3
☀️ 06:10 · 🌙 19:10
·
+1 h
Buenos Aires is 1 h ahead of Guaynabo.
When you, Guaynabo and Buenos Aires are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇷 Guaynabo
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇦🇷 Buenos Aires
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇷 Guaynabo | 🇦🇷 Buenos Aires |
|---|---|---|
| Local time | 13:16 | 14:16 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Atlantic Standard Time | Argentina Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Guaynabo | — | +1 h |
| IANA zone | America/Puerto Rico | America/Argentina/Buenos Aires |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:19 | 06:10 |
| Sunset | 18:02 | 19:10 |
| Daylight | 11 h 42 min | 13 h |
| People on this clock | 68,491 | 2,891,082 |
Compare Guaynabo with another city
More comparisons with Guaynabo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Guaynabo and Buenos Aires: common questions
How many hours ahead of Guaynabo is Buenos Aires?
The clocks in Buenos Aires are 1 hour ahead of those in Guaynabo (UTC−3 and UTC−4).
What time is it in Buenos Aires at the start of the working day in Guaynabo?
The working day in Guaynabo starts at 9:00 AM; in Buenos Aires it is 10:00 AM at that moment.
What time is it in Buenos Aires when it is 6:00 PM in Guaynabo?
When it is 6:00 PM in Guaynabo, it is 7:00 PM in Buenos Aires.
Is there a time when both Guaynabo and Buenos Aires are at work?
Yes: from 9:00 AM to 5:00 PM in Guaynabo (10:00 AM to 6:00 PM in Buenos Aires), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Buenos Aires compared with Guaynabo?
The new day starts in Buenos Aires earlier: at 11:00 PM in Guaynabo it is already midnight there. Until 1:00 AM in Buenos Aires, Guaynabo is still on the previous day.
Is the time difference between Guaynabo and Buenos Aires the same all year?
Yes. Neither Guaynabo nor Buenos Aires switches to summer time, so the gap is always 1 hour.
