India Standard Time (ist) is used in India. The IANA timezone identifier is Asia/Kolkata.

Gulf Standard Time (gst) is used in United Arab Emirates. The IANA timezone identifier is Asia/Dubai.

IST to GST Time Converter

India Standard Time → Gulf Standard Time

IST = UTC+5:30GST = UTC+4

⚠️ IST is ambiguous — on this page it means India Standard Time. It also refers to:

Ireland Standard Time (Dublin) → GST ↗Israel Standard Time (Jerusalem) → GST ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

GST (Dubai)

United Arab Emirates · -1.5h

07:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Sydney

Australia · +4.5h

13:30

IST (Mumbai) ↔ GST (Dubai) — time offset

IST (Mumbai) is 1 hour 30 minutes ahead of GST (Dubai). When IST (Mumbai) clocks hit noon, GST (Dubai) reads 10:00.

IST (Mumbai) runs on Asia/Kolkata; GST (Dubai) runs on Asia/Dubai. Together they are 1.5 hours 30 minutes apart.

Mutual working hours

Every working day, IST (Mumbai) and GST (Dubai) are both in business hours for 6.5 hours simultaneously.

00:0006:0012:0018:0024:00

IST (Mumbai)

GST (Dubai)

Overlap (6.5h)

Best times to schedule a meeting

There is a 6.5-hour daily window where both locations are in business hours. The 3 best slots are listed below.

11:00 Mumbai / 09:00 Dubai✓ Both working

12:00 Mumbai / 10:00 Dubai✓ Both working

13:00 Mumbai / 11:00 Dubai✓ Both working

Working hours defined as 09:00–17:00 local time for each location.

Working across IST (Mumbai) and GST (Dubai)

The 1.5-hour gap between IST (Mumbai) (India) and GST (Dubai) (United Arab Emirates) requires some planning — but a 6.5-hour daily overlap means both teams can connect in real time without unusual scheduling.

💡 Best practice for cross-timezone meetings

✅

If you are in IST (Mumbai), aim for 11:00–12:00, which corresponds to 09:00–10:00 in GST (Dubai) — both teams are within working hours.

✅

If you are in IST (Mumbai), aim for 12:00–13:00, which corresponds to 10:00–11:00 in GST (Dubai) — both teams are within working hours.

✅

If you are in IST (Mumbai), aim for 13:00–14:00, which corresponds to 11:00–12:00 in GST (Dubai) — both teams are within working hours.

Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.

Add to your browser — Free →

Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am IST (Mumbai)".

IST (Mumbai) ↔ GST (Dubai)

6h of business hours overlap daily (09:00–17:00)

IST (Mumbai)

GST (Dubai)

00:00

22:30-1d

01:00

23:30-1d

02:00

00:30

03:00

01:30

04:00

02:30

05:00

03:30

06:00

04:30

07:00

05:30

08:00

06:30

09:00Working

07:30off

10:00Working

08:30off

11:00Working

09:30Working

12:00Working

10:30Working

13:00Working

11:30Working

14:00Working

12:30Working

15:00Working

13:30Working

16:00Working

14:30Working

17:00

15:30Working

18:00

16:30Working

19:00

17:30

20:00

18:30

21:00

19:30

22:00

20:30

23:00

21:30

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between ist and gst?

India Standard Time (ist) is UTC+5:30 and Gulf Standard Time (gst) is UTC+4. The difference between them is 1.5 hours.

Where is ist used?

India Standard Time (ist) is used in India and surrounding regions. The IANA timezone identifier is Asia/Kolkata. Note: ist is ambiguous and may refer to other timezones.

Where is gst used?

Gulf Standard Time (gst) is used in United Arab Emirates and surrounding regions. The IANA timezone identifier is Asia/Dubai.

How do I convert ist to gst?

Use the interactive converter above. Drag the time slider to any ist time and the gst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular IST conversions

IST → London IST → New York IST → Tokyo IST → Dubai IST → Sydney IST → Paris IST → Berlin IST → Singapore IST → Los Angeles IST → Toronto

Popular GST conversions

London → GST New York → GST Tokyo → GST Sydney → GST Paris → GST Berlin → GST Singapore → GST Los Angeles → GST Toronto → GST Mumbai → GST