Guam to Lisbon time converter

Lisbon is 9 hours behind Guam. When it is 9:00 AM in Guam, it is 12:00 AM in Lisbon.

Guam ChST

Saturday, October 17, 2026

Lisbon WEST

Friday, October 16, 2026

Guam
Sat, Oct 17
ChSTUTC+10
Lisbon
Portugal
Fri, Oct 16
WESTUTC+1-9h
Finding your time zone…
Shared working hours (9:00–18:00)

Guam to Lisbon conversion table

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

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

Best time to call or meet

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Guam (7:00 AM – 9:00 AM in Lisbon): working hours on one side, early or late on the other.

Daylight saving time and the difference

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

  • Oct 17, 2026 – Oct 25, 2026: -9h
  • Oct 25, 2026 – Mar 28, 2027: -10h
  • Mar 28, 2027 – Oct 17, 2027: -9h

More conversions

Lisbon to GuamGuam to New YorkGuam to LondonGuam to Los AngelesGuam to ChicagoGuam to TorontoGuam to São PauloGuam to ParisGuam to BerlinGuam to MoscowGuam to DubaiGuam to New DelhiGuam 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 Guam and Lisbon?

Lisbon is 9 hours behind Guam.

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

When it is 9:00 AM in Guam, it is 12:00 AM in Lisbon.

When is the best time to call Lisbon from Guam?

Working hours don't overlap fully. The closest fit is 4:00 PM – 6:00 PM in Guam (7:00 AM – 9:00 AM in Lisbon): working hours on one side, early or late on the other.

Does the time difference between Guam 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.