Oak Forest to Lisbon time converter

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

Oak Forest CDT

Sunday, October 18, 2026

Lisbon WEST

Monday, October 19, 2026

Oak Forest
Illinois, 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)

Oak Forest to Lisbon conversion table

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

Oak ForestLisbon
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 Oak Forest (3:00 PM – 6:00 PM in Lisbon).

Daylight saving time and the difference

The difference changes during the year because Oak Forest 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

Oak Forest and Lisbon are 6,443 km (4,003 miles) apart in a straight line.

More conversions

Lisbon to Oak ForestOak Forest to New YorkOak Forest to LondonOak Forest to Los AngelesOak Forest to ChicagoOak Forest to TorontoOak Forest to São PauloOak Forest to ParisOak Forest to BerlinOak Forest to MoscowOak Forest to DubaiOak Forest to New DelhiOak Forest to Bangkok
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 Oak Forest and Lisbon?

Lisbon is 6 hours ahead of Oak Forest.

What time is it in Lisbon when it is 9 AM in Oak Forest?

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

When is the best time to call Lisbon from Oak Forest?

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

Does the time difference between Oak Forest 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.