Porto to Butte time converter

Butte is 7 hours behind Porto. When it is 9:00 AM in Porto, it is 2:00 AM in Butte.

Porto WEST

Monday, October 19, 2026

Butte MDT

Monday, October 19, 2026

Porto
Portugal
Mon, Oct 19
WESTUTC+1
Butte
Montana, United States
Mon, Oct 19
MDTUTC-6-7h
Finding your time zone…
Shared working hours (9:00–18:00)

Porto to Butte conversion table

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

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

Best time to call or meet

Both sides are at work from 4:00 PM – 6:00 PM in Porto (9:00 AM – 11:00 AM in Butte).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Oct 25, 2026: -7h
  • Oct 25, 2026 – Nov 1, 2026: -6h
  • Nov 1, 2026 – Mar 14, 2027: -7h
  • Mar 14, 2027 – Mar 28, 2027: -6h
  • Mar 28, 2027 – Oct 19, 2027: -7h

Distance

Porto and Butte are 7,746 km (4,813 miles) apart in a straight line.

More conversions

Butte to PortoPorto to New YorkPorto to LondonPorto to Los AngelesPorto to ChicagoPorto to TorontoPorto to São PauloPorto to ParisPorto to BerlinPorto to MoscowPorto to DubaiPorto to New DelhiPorto to Bangkok
New York to ButteLondon to ButteLos Angeles to ButteChicago to ButteToronto to ButteSão Paulo to ButteParis to ButteBerlin to ButteMoscow to ButteDubai to ButteNew Delhi to ButteBangkok to Butte

Questions and answers

What is the time difference between Porto and Butte?

Butte is 7 hours behind Porto.

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

When it is 9:00 AM in Porto, it is 2:00 AM in Butte.

When is the best time to call Butte from Porto?

Both sides are at work from 4:00 PM – 6:00 PM in Porto (9:00 AM – 11:00 AM in Butte).

Does the time difference between Porto and Butte change?

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