Convert GST to IST

Gulf Standard Time (GST) to India Standard Time (IST)

The Gulf-India business corridor is fueled by a massive Indian expatriate community in Dubai and Abu Dhabi, plus deep trade ties across IT services, construction, finance, and logistics. Professionals in the UAE converting to IST for calls with Mumbai, Delhi, and Bangalore offices benefit from one of the smallest timezone gaps in international business -- just 1.5 hours, with no DST complications on either side.

When it's 12:00 PM in Dubai, it's 1:30 PM in Mumbai

GST UTC+4 IST UTC+5:30 +1:30h

Interactive Converter

Pick any time and date to convert between GST and IST.

GST to IST Conversion Table

Full 24-hour comparison. Business hours (9 AM -- 6 PM) are highlighted.

Dubai (GST)	Mumbai (IST)
12:00 AM	1:30 AM
1:00 AM	2:30 AM
2:00 AM	3:30 AM
3:00 AM	4:30 AM
4:00 AM	5:30 AM
5:00 AM	6:30 AM
6:00 AM	7:30 AM
7:00 AM	8:30 AM
8:00 AM	9:30 AM
9:00 AM	10:30 AM
10:00 AM	11:30 AM
11:00 AM	12:30 PM
12:00 PM	1:30 PM
1:00 PM	2:30 PM
2:00 PM	3:30 PM
3:00 PM	4:30 PM
4:00 PM	5:30 PM
5:00 PM	6:30 PM
6:00 PM	7:30 PM
7:00 PM	8:30 PM
8:00 PM	9:30 PM
9:00 PM	10:30 PM
10:00 PM	11:30 PM
11:00 PM	12:30 AM +1 day

Best Meeting Window

Top meeting times for teams in GST and IST (9 AM -- 6 PM work hours, 1-hour meeting).

12a

12p

Dubai

Mumbai

Overlap

Everyone available

Most available

Some overlap

Outside work hours

1 1:00 PM -- 2:00 PM in Dubai

Dubai: 1:00 PM Mumbai: 2:00 PM

All members within working hours. Everyone in mid-day range.

9.7 / 10

2 12:00 PM -- 1:00 PM in Dubai

Dubai: 12:00 PM Mumbai: 1:00 PM

All members within working hours. Everyone in mid-day range.

9.3 / 10

3 2:00 PM -- 3:00 PM in Dubai

Dubai: 2:00 PM Mumbai: 3:00 PM

All members within working hours. Everyone in mid-day range.

9.3 / 10

Try the Meeting Planner with custom work hours →

Scheduling Tips

Schedule freely during standard business hours. The 1.5-hour gap means 9 AM-6 PM overlaps almost entirely in both regions.
Use :30 start times in IST when scheduling with Dubai colleagues, since top-of-the-hour GST times fall on the half-hour in India.
Keep in mind the UAE work week varies -- the public sector works Monday-Friday, but some private-sector firms follow Sunday-Thursday. Confirm your counterpart's schedule.

Time Difference & DST

IST is 1 hour 30 minutes ahead of GST all year.

Dates	Dubai	Mumbai	Difference
Jan 1, 2026 – Dec 31, 2027	UTC+4	UTC+5:30	+1:30h

Dubai, Mumbai do not use daylight saving time.

Use the interactive converter for a specific date.

Major Cities

Gulf Standard Time (GST)

Dubai
Abu Dhabi
Sharjah

India Standard Time (IST)

Mumbai
Delhi
Bangalore

Frequently Asked Questions

What is the time difference between GST and IST?

IST (India Standard Time, UTC+5:30) is 1 hour and 30 minutes ahead of GST (Gulf Standard Time, UTC+4). When it is 10:00 AM in Dubai, it is 11:30 AM in Mumbai.

What is 9:00 AM GST in India?

9:00 AM GST is 10:30 AM IST. Both regions share nearly identical business hours, making real-time collaboration straightforward throughout the workday.

Does the GST to IST time difference ever change?

No. Neither the UAE nor India observes daylight saving time, so the 1-hour-30-minute gap is constant every day of the year. Recurring meetings never need seasonal adjustment.

Why is the GST-IST offset 1.5 hours instead of a round number?

India uses UTC+5:30 -- a half-hour offset -- while the Gulf states use UTC+4. The difference (5:30 minus 4:00 = 1:30) produces the 1.5-hour gap. The 30-minute component means top-of-the-hour meetings in Dubai land at :30 in India and vice versa.