Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Dubai to IRST

-0h 30m

Dubai

GSTSOURCE

UAE · UTC+04:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

IRST

UTC+03:30

HH11

MM30

11:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Dubai

IRST

12:00 AM

11:30 PM-1

2:00 AM

1:30 AM

4:00 AM

3:30 AM

6:00 AM

5:30 AM

8:00 AM

7:30 AM

10:00 AM

9:30 AM

12:00 PM

11:30 AM

2:00 PM

1:30 PM

4:00 PM

3:30 PM

6:00 PM

5:30 PM

8:00 PM

7:30 PM

10:00 PM

9:30 PM

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

GST and IRST on the World Map

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

GST Zone

→

IRST 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

IRST – Iran Standard Time

UTC+03:30

Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.

Countries in IRST

Iran

Major Cities in IRST

TehranIsfahanMashhadTabrizShirazKaraj

Key Facts about IRST

•IRST is one of only a few time zones with a 30-minute offset.
•Iran observes daylight saving time, switching to IRDT (UTC+04:30).
•Tehran has a metropolitan population of over 16 million.

Daylight Saving:Yes – switches to IRDT

Learn more about IRST 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 →

Comparing Time Zones: Dubai and IRST

Dubai runs on Gulf Standard Time (GST) at UTC+04:00. IRST runs on Iran Standard Time (IRST) at UTC+03:30. That puts Dubai 30 minutes behind IRST — a difference of -0h 30m at the current offsets.

In practice, when it is 9:00 AM in Dubai it is 8:30 AM in IRST. Midnight in Dubai is 11:30 PM in IRST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Dubai to IRST time conversion table

Dubai (GST)	IRST (IRST)	Day
12:00 AM	11:30 PM	previous day
6:00 AM	5:30 AM	same day
7:00 AM	6:30 AM	same day
8:00 AM	7:30 AM	same day
9:00 AM	8:30 AM	same day
12:00 PM	11:30 AM	same day
3:00 PM	2:30 PM	same day
5:00 PM	4:30 PM	same day
6:00 PM	5:30 PM	same day
9:00 PM	8:30 PM	same day

Why people convert Dubai to IRST time

Scheduling a call from Dubai to IRST: a 10:00 AM start in Dubai lands at 9:30 AM in IRST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Dubai and IRST are inside the 9-to-5 working day between 9:30 AM and 5:00 PM GST time (9:00 AM–4:30 PM IRST). That is roughly 7 hours 30 minutes of usable overlap.
Watching a live event or market open: Dubai viewers need 8:30 AM in IRST to catch a 9:00 AM start there, and 12:30 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 -0h 30m gap is not.
Block 9:30 AM–5:00 PM GST as the recurring meeting window if you work primarily from Dubai and need IRST 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 IRST (Iran Standard Time)

Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.

Best time to call between Dubai and IRST

Both Dubai and IRST sit inside the 9 AM – 5 PM working day between 9:30 AM–5:00 PM GST, which is 9:00 AM–4:30 PM IRST. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Dubai and IRST share 7 hours of working-hours overlap (9:30 AM–5:00 PM GST), so scheduling a live meeting is straightforward.

Dubai is 30 minutes behind IRST (GST UTC+04:00 → IRST UTC+03:30). The shared working window is 9:30 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 IRST?

Dubai (GST, UTC+04:00) is 30 minutes behind IRST (IRST, UTC+03:30). The gap is currently -0h 30m.

How do I convert Dubai time to IRST time?

Add -0h 30m to Dubai local time. For example, 9:00 AM in Dubai is 8:30 AM in IRST.

What time is it in IRST right now?

IRST uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -0h 30m offset from Dubai.

What is the best time to call IRST from Dubai?

Call between 9:30 AM and 5:00 PM GST — that maps to 9:00 AM–4:30 PM IRST and keeps both parties inside the working day.

Which is behind, Dubai or IRST?

Dubai is 30 minutes behind IRST. When it is 12:00 PM in Dubai it is 11:30 AM in IRST.

Do Dubai and IRST use different time zones?

Dubai (UAE) uses GST at UTC+04:00, while IRST uses IRST at UTC+03:30. The IANA identifiers are Asia/Dubai and Asia/Tehran.

Does daylight saving time affect the Dubai–IRST difference?

Neither zone observes daylight saving time, so the -0h 30m offset between Dubai and IRST 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 IRST?

Not normally. The -0h 30m gap only pushes the date over the previous day.

What is the time difference between Dubai and IRST?

IRST is -0h 30m 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.