Porto to Rosario: time difference
Rosario is 3 h behind Porto. Live clocks for both, the working hours they share, and how each one sits against your own time.
−3 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Porto 11:57 11:57 AM Rosario 08:57 8:57 AM You –:–
11:57 11:57 AM
Western European Standard Time · UTC+0
☀️ 07:12 · 🌙 17:26
08:57 8:57 AM
Argentina Standard Time · UTC-3
☀️ 06:00 · 🌙 19:34
·
−3 h
Rosario is 3 h behind Porto.
When you, Porto and Rosario are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇹 Porto
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
🇦🇷 Rosario
21 9 PM 22 10 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Porto | 🇦🇷 Rosario |
|---|---|---|
| Local time | 11:57 | 08:57 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Western European Standard Time | Argentina Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Porto | — | −3 h |
| IANA zone | Europe/Lisbon | America/Argentina/Cordoba |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:12 | 06:00 |
| Sunset | 17:26 | 19:34 |
| Daylight | 10 h 14 min | 13 h 34 min |
| People on this clock | 231,828 | 1,029,619 |
Compare Porto with another city
More comparisons with Porto: the time zones next to it and the far side of the clock.
Big time differences
Porto and Rosario: common questions
What is the time difference between Porto and Rosario?
Rosario is 3 hours behind: it uses UTC−3, while Porto is on UTC+0.
If it is 9:00 AM in Porto, what time is it in Rosario?
At 9:00 AM in Porto, clocks in Rosario show 6:00 AM.
What time is it in Rosario at the end of the working day in Porto?
The working day in Porto ends at 6:00 PM; in Rosario it is 3:00 PM at that moment.
Is there a time when both Porto and Rosario are at work?
Yes: from 12:00 PM to 6:00 PM in Porto (9:00 AM to 3:00 PM in Rosario), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Rosario?
Until 3:00 AM in Porto it is still the previous day in Rosario. The other way round, from 9:00 PM in Rosario it is already the next day in Porto.
Is the time difference between Porto and Rosario the same all year?
No. Only Porto switches to summer time, so the gap changes twice a year. From March 28, 2027, Rosario will be 4 hours behind Porto.
