Porto to San Luis: time difference
San Luis is 3 h behind Porto. 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.
Porto 05:36 5:36 AM San Luis 02:36 2:36 AM You –:–
05:36 5:36 AM
Western European Standard Time · UTC+0
☀️ 07:12 · 🌙 17:26
02:36 2:36 AM
Argentina Standard Time · UTC-3
☀️ 06:22 · 🌙 19:57
·
−3 h
San Luis is 3 h behind Porto.
When you, Porto and San Luis 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
🇦🇷 San Luis
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 | 🇦🇷 San Luis |
|---|---|---|
| Local time | 05:36 | 02:36 |
| 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/San Luis |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:12 | 06:22 |
| Sunset | 17:26 | 19:57 |
| Daylight | 10 h 14 min | 13 h 35 min |
| People on this clock | 231,828 | 204,019 |
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 San Luis: common questions
What is the time difference between Porto and San Luis?
San Luis is 3 hours behind: it uses UTC−3, while Porto is on UTC+0.
What time is it in San Luis when it is 9:00 AM in Porto?
When it is 9:00 AM in Porto, it is 6:00 AM in San Luis.
If it is 6:00 PM in Porto, what time is it in San Luis?
At 6:00 PM in Porto, clocks in San Luis show 3:00 PM.
When is a good time to call San Luis from Porto?
Between 12:00 PM and 6:00 PM in Porto – that is 9:00 AM to 3:00 PM in San Luis – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in San Luis compared with Porto?
The new day starts in San Luis later: until 3:00 AM in Porto, it is still the previous day there. From 9:00 PM in San Luis, Porto is already on the next day.
Does the time difference between Porto and San Luis change?
Yes. The clocks change only in Porto. From March 28, 2027, San Luis will be 4 hours behind Porto.
