Porto to Guariba time converter

Guariba is 4 hours behind Porto. When it is 9:00 AM in Porto, it is 5:00 AM in Guariba.

Porto WEST

Wednesday, October 21, 2026

Guariba BRT

Wednesday, October 21, 2026

Portugal
Wed, Oct 21
WESTUTC+1
São Paulo, Brazil
Wed, Oct 21
BRTUTC-3-4h
Finding your time zone…

5:36 AM in Porto, Wednesday, October 21, 2026

Shared working hours (9:00–18:00)

Porto to Guariba conversion table

Every hour of today in Porto and the matching time in Guariba. Light rows are typical working hours (9:00–18:00).

PortoGuariba
12:00 AM8:00 PM−1 day
1:00 AM9:00 PM−1 day
2:00 AM10:00 PM−1 day
3:00 AM11:00 PM−1 day
4:00 AM12:00 AM
5:00 AM1:00 AM
6:00 AM2:00 AM
7:00 AM3:00 AM
8:00 AM4:00 AM
9:00 AM5:00 AM
10:00 AM6:00 AM
11:00 AM7:00 AM
12:00 PM8:00 AM
1:00 PM9:00 AM
2:00 PM10:00 AM
3:00 PM11:00 AM
4:00 PM12:00 PM
5:00 PM1:00 PM
6:00 PM2:00 PM
7:00 PM3:00 PM
8:00 PM4:00 PM
9:00 PM5:00 PM
10:00 PM6:00 PM
11:00 PM7:00 PM

Best time to call or meet

Both sides are at work from 1:00 PM – 6:00 PM in Porto (9:00 AM – 2:00 PM in Guariba).

Daylight saving time and the difference

The difference changes during the year because Porto and Guariba switch clocks on different dates:

  • Oct 21, 2026 – Oct 25, 2026: -4h
  • Oct 25, 2026 – Mar 28, 2027: -3h
  • Mar 28, 2027 – Oct 21, 2027: -4h

Distance

Porto and Guariba are 8,063 km (5,010 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between Porto and Guariba?

Guariba is 4 hours behind Porto.

What time is it in Guariba when it is 9 AM in Porto?

When it is 9:00 AM in Porto, it is 5:00 AM in Guariba.

When is the best time to call Guariba from Porto?

Both sides are at work from 1:00 PM – 6:00 PM in Porto (9:00 AM – 2:00 PM in Guariba).

Does the time difference between Porto and Guariba change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.