London to Porto União time converter

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

London BST

Wednesday, October 21, 2026

Porto União BRT

Wednesday, October 21, 2026

United Kingdom
Wed, Oct 21
BSTUTC+1
Santa Catarina, Brazil
Wed, Oct 21
BRTUTC-3-4h
Finding your time zone…

8:51 PM in London, Wednesday, October 21, 2026

Shared working hours (9:00–18:00)

London to Porto União conversion table

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

LondonPorto União
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 London (9:00 AM – 2:00 PM in Porto União).

Daylight saving time and the difference

The difference changes during the year because London and Porto União 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

London and Porto União are 9,972 km (6,196 miles) apart in a straight line.

More conversions

Questions and answers

What is the time difference between London and Porto União?

Porto União is 4 hours behind London.

What time is it in Porto União when it is 9 AM in London?

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

When is the best time to call Porto União from London?

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

Does the time difference between London and Porto União change?

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