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).

London to United Arab Emirates

+3h

London

BSTSOURCE

UK · UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

United Arab Emirates

GST

UTC+04:00

HH03

MM00

15:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

London

United Arab Emirates

12:00 AM

3:00 AM

2:00 AM

5:00 AM

4:00 AM

7:00 AM

6:00 AM

9:00 AM

8:00 AM

11:00 AM

10:00 AM

1:00 PM

12:00 PM

3:00 PM

2:00 PM

5:00 PM

4:00 PM

7:00 PM

6:00 PM

9:00 PM

8:00 PM

11:00 PM

10:00 PM

1:00 AM+1

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

BST and GST on the World Map

The map below highlights the BST (Greenwich Mean Time) and GST (Gulf Standard Time) timezone regions across the globe.

BST Zone

→

GST Zone

Explore all world timezones interactively →

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

GST – Gulf Standard Time

UTC+04:00

Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.

Countries in GST

UAEOmanGeorgiaAzerbaijanMauritius

Major Cities in GST

DubaiAbu DhabiMuscatBakuTbilisi

Key Facts about GST

•Dubai uses GST year-round with no daylight saving time.
•GST is 9 hours ahead of EST and 4 hours ahead of GMT.
•The Dubai Financial Market (DFM) operates on GST.

Daylight Saving:No – UTC+04:00 year-round

Learn more about GST on Wikipedia

About London

Wikipedia

London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.

Population:8.8 million

Metro:14.8 million

Business Hours:9:00 AM - 5:00 PM GMT

Currency:GBP (£)

Stock Exchange:LSE (London Stock Exchange)

Key Landmarks

Big BenTower BridgeBuckingham PalaceLondon EyeThe Shard

Did You Know?

Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.

Learn more about BST timezone →

Comparing Time Zones: London and United Arab Emirates

London runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. United Arab Emirates runs on Gulf Standard Time (GST) at UTC+04:00. That puts London 3 hours ahead of United Arab Emirates — a difference of +3h at the current offsets.

In practice, when it is 9:00 AM in London it is 12:00 PM in United Arab Emirates. Midnight in London is 3:00 AM in United Arab Emirates.London observes daylight saving time while United Arab Emirates does not, so the gap narrows or widens by an hour part of the year.

London to United Arab Emirates time conversion table

London (BST)	United Arab Emirates (GST)	Day
12:00 AM	3:00 AM	same day
6:00 AM	9:00 AM	same day
7:00 AM	10:00 AM	same day
8:00 AM	11:00 AM	same day
9:00 AM	12:00 PM	same day
12:00 PM	3:00 PM	same day
3:00 PM	6:00 PM	same day
5:00 PM	8:00 PM	same day
6:00 PM	9:00 PM	same day
9:00 PM	12:00 AM	next day

Why people convert London to United Arab Emirates time

Scheduling a call from London to United Arab Emirates: a 10:00 AM start in London lands at 1:00 PM in United Arab Emirates, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both London and United Arab Emirates are inside the 9-to-5 working day between 9:00 AM and 2:00 PM BST time (12:00 PM–5:00 PM GST). That is roughly 5 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in London is 11:00 PM in United Arab Emirates makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a +3h gap is not.
Block 9:00 AM–2:00 PM BST as the recurring meeting window if you work primarily from London and need United Arab Emirates colleagues present.
London: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +3h gap.

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.

About GST (Gulf Standard Time)

Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.

Best time to call between London and United Arab Emirates

Both London and United Arab Emirates sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM BST, which is 12:00 PM–5:00 PM GST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

London and United Arab Emirates share 5 hours of working-hours overlap (9:00 AM–2:00 PM BST), so scheduling a live meeting is straightforward.

London is 3 hours ahead of United Arab Emirates (BST UTC+01:00 → GST UTC+04:00). The shared working window is 9:00 AM–2:00 PM BST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

London

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

United Arab Emirates

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 London and United Arab Emirates?

London (BST, UTC+01:00) is 3 hours ahead of United Arab Emirates (GST, UTC+04:00). The gap is currently +3h.

How do I convert London time to United Arab Emirates time?

Add +3h to London local time. For example, 9:00 AM in London is 12:00 PM in United Arab Emirates.

What time is it in United Arab Emirates right now?

United Arab Emirates uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from London.

What is the best time to call United Arab Emirates from London?

Call between 9:00 AM and 2:00 PM BST — that maps to 12:00 PM–5:00 PM GST and keeps both parties inside the working day.

Which is ahead, London or United Arab Emirates?

London is 3 hours ahead of United Arab Emirates. When it is 12:00 PM in London it is 3:00 PM in United Arab Emirates.

Do London and United Arab Emirates use different time zones?

London (UK) uses BST at UTC+01:00, while United Arab Emirates (United Arab Emirates) uses GST at UTC+04:00. The IANA identifiers are Europe/London and Asia/Dubai.

Does daylight saving time affect the London–United Arab Emirates difference?

Yes at the moment: London is on daylight saving time and United Arab Emirates is not, so the +3h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share London's time zone?

BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.

Which countries use BST, London's zone?

BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.

Is there a day difference between London and United Arab Emirates?

Not normally. The +3h gap only pushes the date over for late-evening times.

What is the time difference between London and United Arab Emirates?

United Arab Emirates is +3h from London.

What timezone is London in?

London, where Greenwich Mean Time (GMT) originates, is the world's leading financial center alongside New York. The city bridges European and American business hours.

What timezone is United Arab Emirates in?

United Arab Emirates operates on its local timezone.

What are the business hours in London?

Standard business hours in London are 9:00 AM - 5:00 PM GMT.

Which countries use GMT (Greenwich Mean Time)?

GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.

Does GMT observe daylight saving time?

Yes, GMT switches to BST during summer months.

What are some interesting 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.