Altus to Lisbon time converter

Lisbon is 6 hours ahead of Altus. When it is 9:00 AM in Altus, it is 3:00 PM in Lisbon.

Altus CDT

Sunday, October 18, 2026

Lisbon WEST

Monday, October 19, 2026

Altus
Oklahoma, United States
Sun, Oct 18
CDTUTC-5
Lisbon
Portugal
Mon, Oct 19
WESTUTC+1+6h
Finding your time zone…
Shared working hours (9:00–18:00)

Altus to Lisbon conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 12:00 PM in Altus (3:00 PM – 6:00 PM in Lisbon).

Daylight saving time and the difference

The difference changes during the year because Altus and Lisbon switch clocks on different dates:

  • Oct 18, 2026 – Oct 24, 2026: +6h
  • Oct 24, 2026 – Nov 1, 2026: +5h
  • Nov 1, 2026 – Mar 14, 2027: +6h
  • Mar 14, 2027 – Mar 27, 2027: +5h
  • Mar 27, 2027 – Oct 18, 2027: +6h

Distance

Altus and Lisbon are 7,706 km (4,788 miles) apart in a straight line.

More conversions

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New York to LisbonLondon to LisbonLos Angeles to LisbonChicago to LisbonToronto to LisbonSão Paulo to LisbonParis to LisbonBerlin to LisbonMoscow to LisbonDubai to LisbonNew Delhi to LisbonBangkok to Lisbon

Questions and answers

What is the time difference between Altus and Lisbon?

Lisbon is 6 hours ahead of Altus.

What time is it in Lisbon when it is 9 AM in Altus?

When it is 9:00 AM in Altus, it is 3:00 PM in Lisbon.

When is the best time to call Lisbon from Altus?

Both sides are at work from 9:00 AM – 12:00 PM in Altus (3:00 PM – 6:00 PM in Lisbon).

Does the time difference between Altus and Lisbon change?

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