Porto to Castanhal: time difference
Castanhal 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 01:56 1:56 AM Castanhal 22:56 10:56 PM You –:–
01:56 1:56 AM
Western European Standard Time · UTC+0
☀️ 07:12 · 🌙 17:26
22:56 10:56 PM
Brasilia Standard Time · UTC-3
☀️ 05:51 · 🌙 18:01
·
−3 h
Castanhal is 3 h behind Porto.
When you, Porto and Castanhal 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
🇧🇷 Castanhal
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 | 🇧🇷 Castanhal |
|---|---|---|
| Local time | 01:56 | 22:56 |
| Local date | Friday, November 6, 2026 | Thursday, November 5, 2026 |
| Time zone | Western European Standard Time | Brasilia Standard Time |
| UTC offset | UTC+0 | UTC-3 |
| Offset from Porto | — | −3 h |
| IANA zone | Europe/Lisbon | America/Belem |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:12 | 05:51 |
| Sunset | 17:26 | 18:01 |
| Daylight | 10 h 14 min | 12 h 10 min |
| People on this clock | 231,828 | 192,256 |
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 Castanhal: common questions
What is the time difference between Porto and Castanhal?
Castanhal 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 Castanhal?
At 9:00 AM in Porto, clocks in Castanhal show 6:00 AM.
If it is 6:00 PM in Porto, what time is it in Castanhal?
At 6:00 PM in Porto, clocks in Castanhal show 3:00 PM.
When is a good time to call Castanhal from Porto?
Between 12:00 PM and 6:00 PM in Porto – that is 9:00 AM to 3:00 PM in Castanhal – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Castanhal?
Until 3:00 AM in Porto it is still the previous day in Castanhal. The other way round, from 9:00 PM in Castanhal it is already the next day in Porto.
Is the time difference between Porto and Castanhal the same all year?
No. Only Porto switches to summer time, so the gap changes twice a year. From March 28, 2027, Castanhal will be 4 hours behind Porto.
