Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Portugal to Honolulu

-11h

Portugal

WESTSOURCE

UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Honolulu

HST

USA · UTC-10:00

HH01

MM00

01:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Portugal

Honolulu

12:00 AM

1:00 PM-1

2:00 AM

3:00 PM-1

4:00 AM

5:00 PM-1

6:00 AM

7:00 PM-1

8:00 AM

9:00 PM-1

10:00 AM

11:00 PM-1

12:00 PM

1:00 AM

2:00 PM

3:00 AM

4:00 PM

5:00 AM

6:00 PM

7:00 AM

8:00 PM

9:00 AM

10:00 PM

11:00 AM

Green rows indicate typical business hours (9 AM - 5 PM)

WEST and HST on the World Map

The map below highlights the WEST (Western European Time) and HST (Hawaii Standard Time) timezone regions across the globe.

WEST Zone

→

HST Zone

Explore all world timezones interactively →

WET – Western European Time

UTC+00:00

Western European Time (WET) is the time zone for Portugal, Morocco, and the Canary Islands, same as UTC+00:00.

Countries in WET

PortugalSpain (Canary Islands)MoroccoWestern Sahara

Major Cities in WET

LisbonPortoCasablancaLas PalmasFunchalRabat

Key Facts about WET

•Portugal is the only mainland European country in the WET time zone.
•The Canary Islands are on WET despite being part of Spain (which uses CET).
•WET is identical to GMT and UTC+00:00.

Daylight Saving:Yes – switches to WEST

Learn more about WET on Wikipedia

HST – Hawaii Standard Time

UTC-10:00

Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.

Countries in HST

United States (Hawaii)

Major Cities in HST

HonoluluHiloKailuaPearl CityKapolei

Key Facts about HST

•Hawaii does not observe daylight saving time.
•HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
•Hawaii is one of only two US states that don't observe DST (the other is Arizona).

Daylight Saving:No – UTC-10:00 year-round

Learn more about HST on Wikipedia

About Honolulu

Wikipedia

Honolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.

Population:350,000

Metro:1 million

Business Hours:8:00 AM - 5:00 PM HST

Currency:USD ($)

Key Landmarks

Waikiki BeachDiamond HeadPearl HarborIolani PalaceHanauma Bay

Did You Know?

Pearl Harbor memorial receives over 2 million visitors annually.

Learn more about HST timezone →

Understanding the -11h Gap: Portugal vs Honolulu

Portugal runs on Western European Summer Time (WEST) at UTC+01:00, currently observing daylight saving time. Honolulu runs on Hawaii-Aleutian Standard Time (HST) at UTC-10:00. That puts Portugal 11 hours behind Honolulu — a difference of -11h at the current offsets.

In practice, when it is 9:00 AM in Portugal it is 10:00 PM in Honolulu on the previous day. Midnight in Portugal is 1:00 PM in Honolulu.Portugal observes daylight saving time while Honolulu does not, so the gap narrows or widens by an hour part of the year.

Portugal to Honolulu time conversion table

Portugal (WEST)	Honolulu (HST)	Day
12:00 AM	1:00 PM	previous day
6:00 AM	7:00 PM	previous day
7:00 AM	8:00 PM	previous day
8:00 AM	9:00 PM	previous day
9:00 AM	10:00 PM	previous day
12:00 PM	1:00 AM	same day
3:00 PM	4:00 AM	same day
5:00 PM	6:00 AM	same day
6:00 PM	7:00 AM	same day
9:00 PM	10:00 AM	same day

Why people convert Portugal to Honolulu time

Scheduling a call from Portugal to Honolulu: a 10:00 AM start in Portugal lands at 11:00 PM in Honolulu the previous day, so you can confirm the slot without doing the arithmetic yourself.
Handling a -11h gap: Portugal and Honolulu have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Honolulu is 10:00 PM in Portugal.
Coordinating a Portugal-based team with Honolulu contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM WEST" is unambiguous; "3 PM" across a -11h gap is not.
With a -11h gap there is no shared 9-to-5 window, so alternate the early start: one week Portugal takes the early slot, the next week Honolulu does.
Portugal: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -11h gap.

About WET (Western European Time)

Western European Time (WET) is used in Portugal, the Canary Islands (Spain), Morocco, and several other locations. It is equivalent to GMT/UTC. During summer, Portugal and the Canary Islands switch to WEST (Western European Summer Time, UTC+01:00).

About HST (Hawaii Standard Time)

Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.

Best time to call between Portugal and Honolulu

With a -11h offset there is no overlap inside a normal 9 AM – 5 PM day. Honolulu opens at 9:00 AM HST, which is 10:00 PM in Portugal, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Portugal and Honolulu have no shared working hours because of the -11h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Portugal is 11 hours behind Honolulu (WEST UTC+01:00 → HST UTC-10:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Portugal

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

Honolulu

Does not observe DST

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Portugal and Honolulu?

Portugal (WEST, UTC+01:00) is 11 hours behind Honolulu (HST, UTC-10:00). The gap is currently -11h.

How do I convert Portugal time to Honolulu time?

Add -11h to Portugal local time. For example, 9:00 AM in Portugal is 10:00 PM in Honolulu (previous day).

What time is it in Honolulu right now?

Honolulu uses HST at UTC-10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -11h offset from Portugal.

What is the best time to call Honolulu from Portugal?

There is no shared working-hours window because of the -11h gap. The closest option is 1:00 PM in Portugal, which is 2:00 AM in Honolulu.

Which is behind, Portugal or Honolulu?

Portugal is 11 hours behind Honolulu. When it is 12:00 PM in Portugal it is 1:00 AM in Honolulu.

Do Portugal and Honolulu use different time zones?

Portugal (Portugal) uses WEST at UTC+01:00, while Honolulu (USA) uses HST at UTC-10:00. The IANA identifiers are Europe/Lisbon and Pacific/Honolulu.

Does daylight saving time affect the Portugal–Honolulu difference?

Yes at the moment: Portugal is on daylight saving time and Honolulu is not, so the -11h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Portugal's time zone?

WEST also covers Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.

Which countries use WEST, Portugal's zone?

WEST is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.

Is there a day difference between Portugal and Honolulu?

Not normally. The -11h gap only pushes the date over the previous day.

What is the time difference between Portugal and Honolulu?

Honolulu is -11h from Portugal.

What timezone is Portugal in?

Portugal operates on its local timezone.

What timezone is Honolulu in?

Honolulu operates on Hawaii Standard Time (HST), UTC-10 with no daylight saving. Hawaii's consistent time makes it a predictable connection between Asia and mainland USA.