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).

Casablanca to GMT

-1h

Casablanca

UTC+01:00SOURCE

Morocco · UTC+01:00DST observed

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

GMT

UTC+01:00☀ DST active

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Casablanca

GMT

12:00 AM

2:00 AM

4:00 AM

6:00 AM

8:00 AM

10:00 AM

12:00 PM

2:00 PM

4:00 PM

6:00 PM

8:00 PM

10:00 PM

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

UTC+01:00 and GMT on the World Map

The map below highlights the UTC+01:00 (Western European Time) and GMT (Greenwich Mean Time) timezone regions across the globe.

UTC+01:00 Zone

→

GMT 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

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

Everything You Need to Know About Casablanca and GMT Time

Casablanca runs on Western European Time (UTC+01:00) at UTC+01:00. GMT runs on Greenwich Mean Time (GMT) at UTC+00:00. That puts Casablanca 1 hour behind GMT — a difference of -1h at the current offsets.

In practice, when it is 9:00 AM in Casablanca it is 8:00 AM in GMT. Midnight in Casablanca is 11:00 PM in GMT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Casablanca to GMT time conversion table

Casablanca (UTC+01:00)	GMT (GMT)	Day
12:00 AM	11:00 PM	previous day
6:00 AM	5:00 AM	same day
7:00 AM	6:00 AM	same day
8:00 AM	7:00 AM	same day
9:00 AM	8:00 AM	same day
12:00 PM	11:00 AM	same day
3:00 PM	2:00 PM	same day
5:00 PM	4:00 PM	same day
6:00 PM	5:00 PM	same day
9:00 PM	8:00 PM	same day

Why people convert Casablanca to GMT time

Scheduling a call from Casablanca to GMT: a 10:00 AM start in Casablanca lands at 9:00 AM in GMT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Casablanca and GMT are inside the 9-to-5 working day between 10:00 AM and 5:00 PM UTC+01:00 time (9:00 AM–4:00 PM GMT). That is roughly 7 hours of usable overlap.
Booking travel or deliveries: tracking GMT local time against Casablanca keeps pickup windows and arrival estimates honest across the -1h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM UTC+01:00" is unambiguous; "3 PM" across a -1h gap is not.
Block 10:00 AM–5:00 PM UTC+01:00 as the recurring meeting window if you work primarily from Casablanca and need GMT colleagues present.
Casablanca: Clocks fall back on Sun, Feb 7, 2027. Re-check this page after that date because the offset changes and so does the -1h 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 GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Best time to call between Casablanca and GMT

Both Casablanca and GMT sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM UTC+01:00, which is 9:00 AM–4:00 PM GMT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Casablanca and GMT share 7 hours of working-hours overlap (10:00 AM–5:00 PM UTC+01:00), so scheduling a live meeting is straightforward.

Casablanca is 1 hour behind GMT (UTC+01:00 UTC+01:00 → GMT UTC+00:00). The shared working window is 10:00 AM–5:00 PM UTC+01:00. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Casablanca

❄ Currently in Standard Time

Standard: UTC+01:00 · DST: UTC+00:00

Clocks fall back on Sun, Feb 7, 2027

GMT

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.

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 Casablanca and GMT?

Casablanca (UTC+01:00, UTC+01:00) is 1 hour behind GMT (GMT, UTC+00:00). The gap is currently -1h.

How do I convert Casablanca time to GMT time?

Add -1h to Casablanca local time. For example, 9:00 AM in Casablanca is 8:00 AM in GMT.

What time is it in GMT right now?

GMT uses GMT at UTC+00:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Casablanca.

What is the best time to call GMT from Casablanca?

Call between 10:00 AM and 5:00 PM UTC+01:00 — that maps to 9:00 AM–4:00 PM GMT and keeps both parties inside the working day.

Which is behind, Casablanca or GMT?

Casablanca is 1 hour behind GMT. When it is 12:00 PM in Casablanca it is 11:00 AM in GMT.

Do Casablanca and GMT use different time zones?

Casablanca (Morocco) uses UTC+01:00 at UTC+01:00, while GMT uses GMT at UTC+00:00. The IANA identifiers are Africa/Casablanca and Europe/London.

Does daylight saving time affect the Casablanca–GMT difference?

Neither zone observes daylight saving time, so the -1h offset between Casablanca and GMT is fixed all year.

Which other cities share Casablanca's time zone?

UTC+01:00 also covers Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.

Which countries use UTC+01:00, Casablanca's zone?

UTC+01:00 is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.

Is there a day difference between Casablanca and GMT?

Not normally. The -1h gap only pushes the date over the previous day.

What is the time difference between Casablanca and GMT?

GMT is -1h from Casablanca.

What timezone is Casablanca in?

Casablanca operates on its local timezone.

What timezone is GMT in?

GMT operates on its local timezone.

Which countries use WET (Western European Time)?

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

Does WET observe daylight saving time?

Yes, WET switches to WEST during summer months.

What are some interesting 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).

Which cities are in the GMT timezone?

Major cities in the GMT timezone include London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar.

What is the UTC offset for GMT?

Greenwich Mean Time (GMT) is at UTC+00:00. During daylight saving time, it shifts to BST.

What should I know about the GMT timezone?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.