Guarulhos to Porto: time difference
Porto is 3 h ahead of Guarulhos. 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.
Guarulhos 00:34 12:34 AM Porto 03:34 3:34 AM You –:–
00:34 12:34 AM
Brasilia Standard Time · UTC-3
☀️ 05:18 · 🌙 18:23
03:34 3:34 AM
Western European Standard Time · UTC+0
☀️ 07:12 · 🌙 17:26
·
+3 h
Porto is 3 h ahead of Guarulhos.
When you, Guarulhos and Porto are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Guarulhos
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
🇵🇹 Porto
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 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Guarulhos | 🇵🇹 Porto |
|---|---|---|
| Local time | 00:34 | 03:34 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Brasilia Standard Time | Western European Standard Time |
| UTC offset | UTC-3 | UTC+0 |
| Offset from Guarulhos | — | +3 h |
| IANA zone | America/Sao Paulo | Europe/Lisbon |
| Daylight saving | Not observed | On standard time → UTC+1, Mar 28, 02:00 |
| Sunrise | 05:18 | 07:12 |
| Sunset | 18:23 | 17:26 |
| Daylight | 13 h 5 min | 10 h 14 min |
| People on this clock | 1,291,771 | 231,828 |
Compare Guarulhos with another city
More comparisons with Guarulhos: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Guarulhos and Porto: common questions
How many hours ahead of Guarulhos is Porto?
The clocks in Porto are 3 hours ahead of those in Guarulhos (UTC+0 and UTC−3).
What time is it in Porto at the start of the working day in Guarulhos?
The working day in Guarulhos starts at 9:00 AM; in Porto it is 12:00 PM at that moment.
What time is it in Porto at the end of the working day in Guarulhos?
The working day in Guarulhos ends at 6:00 PM; in Porto it is 9:00 PM at that moment.
Is there a time when both Guarulhos and Porto are at work?
Yes: from 9:00 AM to 3:00 PM in Guarulhos (12:00 PM to 6:00 PM in Porto), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Porto?
From 9:00 PM in Guarulhos it is already the next day in Porto. The other way round, until 3:00 AM in Porto it is still the previous day in Guarulhos.
Does the time gap between Guarulhos and Porto change during the year?
Yes – daylight saving time is used in Porto but not in Guarulhos. From March 28, 2027, Porto will be 4 hours ahead of Guarulhos.
