Montevideo to Guaynabo: time difference
Guaynabo is 1 h behind Montevideo. 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.
Montevideo 19:42 7:42 PM Guaynabo 18:42 6:42 PM You –:–
19:42 7:42 PM
Uruguay Standard Time · UTC-3
☀️ 06:01 · 🌙 19:01
18:42 6:42 PM
Atlantic Standard Time · UTC-4
☀️ 06:19 · 🌙 18:02
·
−1 h
Guaynabo is 1 h behind Montevideo.
When you, Montevideo and Guaynabo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇾 Montevideo
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
🇵🇷 Guaynabo
23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇺🇾 Montevideo | 🇵🇷 Guaynabo |
|---|---|---|
| Local time | 19:42 | 18:42 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Uruguay Standard Time | Atlantic Standard Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Montevideo | — | −1 h |
| IANA zone | America/Montevideo | America/Puerto Rico |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:01 | 06:19 |
| Sunset | 19:01 | 18:02 |
| Daylight | 13 h | 11 h 42 min |
| People on this clock | 1,319,108 | 68,491 |
Compare Montevideo with another city
More comparisons with Montevideo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Montevideo and Guaynabo: common questions
What is the time difference between Montevideo and Guaynabo?
Guaynabo is 1 hour behind: it uses UTC−4, while Montevideo is on UTC−3.
What time is it in Guaynabo at the start of the working day in Montevideo?
The working day in Montevideo starts at 9:00 AM; in Guaynabo it is 8:00 AM at that moment.
What time is it in Guaynabo at the end of the working day in Montevideo?
The working day in Montevideo ends at 6:00 PM; in Guaynabo it is 5:00 PM at that moment.
When do working hours in Montevideo and in Guaynabo overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Montevideo, which is 9:00 AM to 5:00 PM in Guaynabo.
When does the date change in Guaynabo compared with Montevideo?
The new day starts in Guaynabo later: until 1:00 AM in Montevideo, it is still the previous day there. From 11:00 PM in Guaynabo, Montevideo is already on the next day.
Is the time difference between Montevideo and Guaynabo the same all year?
Yes. Neither Montevideo nor Guaynabo switches to summer time, so the gap is always 1 hour.
