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.

IRST to Dubai

+0h 30m

IRST

IRSTSOURCE

UTC+03:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Dubai

GST

UAE · UTC+04:00

HH12

MM30

12:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

IRST

Dubai

12:00 AM

12:30 AM

2:00 AM

2:30 AM

4:00 AM

4:30 AM

6:00 AM

6:30 AM

8:00 AM

8:30 AM

10:00 AM

10:30 AM

12:00 PM

12:30 PM

2:00 PM

2:30 PM

4:00 PM

4:30 PM

6:00 PM

6:30 PM

8:00 PM

8:30 PM

10:00 PM

10:30 PM

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

IRST and GST on the World Map

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

IRST Zone

→

GST Zone

Explore all world timezones interactively →

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

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 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 →

IRST to Dubai Time Difference – Complete Guide

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

In practice, when it is 9:00 AM in IRST it is 9:30 AM in Dubai. Midnight in IRST is 12:30 AM in Dubai. Neither zone observes daylight saving time, so the offset between them stays constant all year.

IRST to Dubai time conversion table

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

Why people convert IRST to Dubai time

Scheduling a call from IRST to Dubai: a 10:00 AM start in IRST lands at 10:30 AM in Dubai, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both IRST and Dubai are inside the 9-to-5 working day between 9:00 AM and 4:30 PM IRST time (9:30 AM–5:00 PM GST). That is roughly 7 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking Dubai local time against IRST keeps pickup windows and arrival estimates honest across the +0h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +0h 30m gap is not.
Block 9:00 AM–4:30 PM IRST as the recurring meeting window if you work primarily from IRST and need Dubai colleagues present.

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.

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 IRST and Dubai

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

Business hours overlap

IRST and Dubai share 7 hours of working-hours overlap (9:00 AM–4:30 PM IRST), so scheduling a live meeting is straightforward.

IRST is 30 minutes ahead of Dubai (IRST UTC+03:30 → GST UTC+04:00). The shared working window is 9:00 AM–4:30 PM IRST. 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 IRST and Dubai?

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

How do I convert IRST time to Dubai time?

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

What time is it in Dubai right now?

Dubai 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 +0h 30m offset from IRST.

What is the best time to call Dubai from IRST?

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

Which is ahead, IRST or Dubai?

IRST is 30 minutes ahead of Dubai. When it is 12:00 PM in IRST it is 12:30 PM in Dubai.

Do IRST and Dubai use different time zones?

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

Does daylight saving time affect the IRST–Dubai difference?

Neither zone observes daylight saving time, so the +0h 30m offset between IRST and Dubai is fixed all year.

Which other cities share IRST's time zone?

IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.

Which countries use IRST, IRST's zone?

IRST is used in Iran.

Is there a day difference between IRST and Dubai?

Not normally. The +0h 30m gap only pushes the date over for late-evening times.

What is the time difference between IRST and Dubai?

Dubai is +0h 30m from IRST.

What timezone is IRST in?

IRST operates on its local timezone.

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.