Time zone converter

GST to IST

India Standard Time (IST) is 1 hour 30 minutes ahead of Gulf Standard Time (GST) all year: 9:00 AM GST is 10:30 AM IST.

Gulf Standard Time
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Current time in Gulf Standard Time
India Standard Time
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Current time in India Standard Time
Pick a date and time to convert.

IST vs GST over the next 12 months

PeriodIST isExample
Oct 23, 2026 onwards1 hour 30 minutes ahead9:00 AM GST = 10:30 AM IST

GST to IST conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

Gulf Standard TimeIndia Standard Time
12:00 AM1:30 AM
1:00 AM2:30 AM
2:00 AM3:30 AM
3:00 AM4:30 AM
4:00 AM5:30 AM
5:00 AM6:30 AM
6:00 AM7:30 AM
7:00 AM8:30 AM
8:00 AM9:30 AM
9:00 AM10:30 AM
10:00 AM11:30 AM
11:00 AM12:30 PM
12:00 PM1:30 PM
1:00 PM2:30 PM
2:00 PM3:30 PM
3:00 PM4:30 PM
4:00 PM5:30 PM
5:00 PM6:30 PM
6:00 PM7:30 PM
7:00 PM8:30 PM
8:00 PM9:30 PM
9:00 PM10:30 PM
10:00 PM11:30 PM
11:00 PM12:30 AM (next day)

Best time for a meeting

Normal 9-to-5 working hours overlap for 6 hours 30 minutes on a weekday: 9:00 AM–3:30 PM GST, which is 10:30 AM–5:00 PM IST.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

Neither GST nor IST changes its clocks, so the difference is the same all year.

Where these clocks are used

  • Gulf Standard Time (GST): Dubai, Abu Dhabi, Muscat. IANA zone Asia/Dubai.
  • India Standard Time (IST): all of India: Mumbai, Delhi, Bengaluru, Chennai. IANA zone Asia/Kolkata.

Questions

What time is it in IST when it is 9 AM GST?

On Oct 23, 2026, 9:00 AM GST is 10:30 AM IST.

How many hours ahead of GST is IST?

IST is always 1 hour 30 minutes ahead of GST.

Do GST and IST observe daylight saving time?

Gulf Standard Time stays on UTC+4 all year. India Standard Time stays on UTC+5:30 all year.

What is the best time for a meeting between GST and IST?

Normal 9-to-5 working hours overlap for 6 hours 30 minutes on a weekday: 9:00 AM–3:30 PM GST, which is 10:30 AM–5:00 PM IST.

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Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.