Time zone converter

IST to GST

Gulf Standard Time (GST) is 1 hour 30 minutes behind India Standard Time (IST) all year: 9:00 AM IST is 7:30 AM GST.

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

GST vs IST over the next 12 months

PeriodGST isExample
Oct 23, 2026 onwards1 hour 30 minutes behind9:00 AM IST = 7:30 AM GST

IST to GST conversion table

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

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

Best time for a meeting

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

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

Daylight saving time

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

Where these clocks are used

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

Questions

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

On Oct 23, 2026, 9:00 AM IST is 7:30 AM GST.

How many hours behind IST is GST?

GST is always 1 hour 30 minutes behind IST.

Do IST and GST observe daylight saving time?

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

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

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

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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.