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).

Dubai to Riyadh

-1h

Dubai

GSTSOURCE

UAE · UTC+04:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Riyadh

AST

Saudi Arabia · UTC+03:00

HH11

MM00

11:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Dubai

Riyadh

12:00 AM

11:00 PM-1

2:00 AM

1:00 AM

4:00 AM

3:00 AM

6:00 AM

5:00 AM

8:00 AM

7:00 AM

10:00 AM

9:00 AM

12:00 PM

11:00 AM

2:00 PM

1:00 PM

4:00 PM

3:00 PM

6:00 PM

5:00 PM

8:00 PM

7:00 PM

10:00 PM

9:00 PM

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

GST and AST on the World Map

The map below highlights the GST (Gulf Standard Time) and AST (Arabia Standard Time) timezone regions across the globe.

GST Zone

→

AST Zone

Explore all world timezones interactively →

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

AST – Arabia Standard Time

UTC+03:00

Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.

Countries in AST

Saudi ArabiaQatarKuwaitBahrainIraqYemen

Major Cities in AST

RiyadhJeddahDohaKuwait CityBaghdad

Key Facts about AST

•None of the Gulf states on Arabia Standard Time observe daylight saving.
•AST is the same offset as Moscow Standard Time and East Africa Time.
•Riyadh is one hour ahead of Central European Time in winter.
•The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).

Daylight Saving:No – UTC+03:00 year-round

Learn more about AST on Wikipedia

About Dubai

Wikipedia

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

Population:3.5 million

Metro:4.1 million

Business Hours:8:00 AM - 6:00 PM GST

Currency:AED (د.إ)

Stock Exchange:DFM (Dubai Financial Market)

Key Landmarks

Burj KhalifaPalm JumeirahBurj Al ArabDubai MallDubai Frame

Did You Know?

Dubai has no income tax, making it a major hub for international business.

Learn more about GST timezone →

About Riyadh

Wikipedia

Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.

Population:7.7 million

Metro:7.7 million

Business Hours:8:00 AM - 4:00 PM AST (Sunday-Thursday)

Currency:SAR (﷼)

Stock Exchange:Tadawul (Saudi Stock Exchange)

Key Landmarks

Kingdom CentreMasmak FortressNational MuseumAl Faisaliyah CenterDiriyah

Did You Know?

Riyadh is growing rapidly as part of Saudi Vision 2030 modernization.

Learn more about AST timezone →

Time Conversion Guide: Dubai to Riyadh

Dubai runs on Gulf Standard Time (GST) at UTC+04:00. Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. That puts Dubai 1 hour behind Riyadh — a difference of -1h at the current offsets.

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

Dubai to Riyadh time conversion table

Dubai (GST)	Riyadh (AST)	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 Dubai to Riyadh time

Scheduling a call from Dubai to Riyadh: a 10:00 AM start in Dubai lands at 9:00 AM in Riyadh, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Dubai and Riyadh are inside the 9-to-5 working day between 10:00 AM and 5:00 PM GST time (9:00 AM–4:00 PM AST). That is roughly 7 hours of usable overlap.
Watching a live event or market open: Dubai viewers need 8:00 AM in Riyadh to catch a 9:00 AM start there, and 1:00 AM if the event is anchored to Dubai.

Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a -1h gap is not.
Block 10:00 AM–5:00 PM GST as the recurring meeting window if you work primarily from Dubai and need Riyadh colleagues present.

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.

About AST (Arabia Standard Time)

Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.

Best time to call between Dubai and Riyadh

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

Business hours overlap

Dubai and Riyadh share 7 hours of working-hours overlap (10:00 AM–5:00 PM GST), so scheduling a live meeting is straightforward.

Dubai is 1 hour behind Riyadh (GST UTC+04:00 → AST UTC+03:00). The shared working window is 10:00 AM–5:00 PM GST. Remember to re-check around daylight-saving transitions.

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 Dubai and Riyadh?

Dubai (GST, UTC+04:00) is 1 hour behind Riyadh (AST, UTC+03:00). The gap is currently -1h.

How do I convert Dubai time to Riyadh time?

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

What time is it in Riyadh right now?

Riyadh uses AST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from Dubai.

What is the best time to call Riyadh from Dubai?

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

Which is behind, Dubai or Riyadh?

Dubai is 1 hour behind Riyadh. When it is 12:00 PM in Dubai it is 11:00 AM in Riyadh.

Do Dubai and Riyadh use different time zones?

Dubai (UAE) uses GST at UTC+04:00, while Riyadh (Saudi Arabia) uses AST at UTC+03:00. The IANA identifiers are Asia/Dubai and Asia/Riyadh.

Does daylight saving time affect the Dubai–Riyadh difference?

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

Which other cities share Dubai's time zone?

GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.

Which countries use GST, Dubai's zone?

GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.

Is there a day difference between Dubai and Riyadh?

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

What is the time difference between Dubai and Riyadh?

Riyadh is -1h from Dubai.

What timezone is Dubai in?

Dubai operates on Gulf Standard Time (GST), 4 hours ahead of GMT. Dubai's position between Europe and Asia makes it a strategic hub for international business.

What timezone is Riyadh in?

Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.

What are the business hours in Dubai?

Standard business hours in Dubai are 8:00 AM - 6:00 PM GST.

What are the business hours in Riyadh?

Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).

What is the best time to schedule a call between Dubai and Riyadh?

The best overlap for a call is when both cities are in business hours. Dubai works 8:00 AM - 6:00 PM GST and Riyadh works 8:00 AM - 4:00 PM AST (Sunday-Thursday) (-1h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Dubai and Riyadh?

Dubai uses AED (د.إ) while Riyadh uses SAR (﷼). Check current exchange rates when planning travel or business between these cities.

How do Dubai and Riyadh compare in size?

Dubai has a population of approximately 3.5 million (metro: 4.1 million), while Riyadh has approximately 7.7 million (metro: 7.7 million).

What are the major landmarks in Dubai and Riyadh?

Dubai is known for Burj Khalifa, Palm Jumeirah, Burj Al Arab. Riyadh is famous for Kingdom Centre, Masmak Fortress, National Museum.

Do Dubai and Riyadh have stock exchanges?

Yes. Dubai has the DFM (Dubai Financial Market) and Riyadh has the Tadawul (Saudi Stock Exchange). The -1h time difference affects trading hour overlaps between these exchanges.