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Timezone Prime

GST to IST converter

Convert Gulf Standard Time (GST) to India Standard Time (IST), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

GST 9 to 5 IST 9 to 5

From zone
Gulf Standard Time
Offset and clock
UTC+4 No daylight saving time
IANA name
Asia/Dubai
To zone
India Standard Time
Offset and clock
UTC+5:30 No daylight saving time
IANA name
Asia/Kolkata

IST is 1 hour 30 minutes ahead of GST.

Time difference
India Standard Time is 1 hour 30 minutes ahead of Gulf Standard Time all year.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 3:30 PM GST, which is 10:30 AM to 5:00 PM IST.
Daylight saving
Neither zone observes daylight saving time, so the difference never changes.

Where GST and IST apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Gulf Standard Time
  • India Standard Time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
Dubai (GST) New Delhi (IST) Working hours
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 Both working
10:00 AM 11:30 AM Both working
11:00 AM 12:30 PM Both working
12:00 PM 1:30 PM Both working
1:00 PM 2:30 PM Both working
2:00 PM 3:30 PM Both working
3:00 PM 4:30 PM Both working
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 next day

GST to IST conversion table

Common GST times and their IST equivalents.

GST to IST conversion table
Gulf Standard Time IST 1 h 30 min ahead, all year
12:00 AM 1:30 AM
6:00 AM 7:30 AM
8:00 AM 9:30 AM
9:00 AM 10:30 AM
10:00 AM 11:30 AM
12:00 PM 1:30 PM
2:00 PM 3:30 PM
3:00 PM 4:30 PM
5:00 PM 6:30 PM
6:00 PM 7:30 PM
8:00 PM 9:30 PM
10:00 PM 11:30 PM

Upcoming clock changes

Neither Gulf Standard Time nor India Standard Time changes its clocks in the next 18 months.

About the two zones

Gulf Standard Time (GST)

Gulf Standard Time is UTC+4 all year. The UAE and Oman do not observe daylight saving time.

IANA zone
Asia/Dubai
Offset
UTC+4 all year
Used in
the United Arab Emirates and Oman
Major cities
Dubai, Abu Dhabi, Sharjah, Muscat

GST can also mean South Georgia Time (UTC−2). Here GST means Gulf Standard Time (Asia/Dubai).

India Standard Time (IST)

India Standard Time is UTC+5:30 all year. The whole country keeps a single clock, and India has not observed daylight saving time since the 1940s, so IST never changes.

IANA zone
Asia/Kolkata
Offset
UTC+5:30 all year
Used in
India
Major cities
Mumbai, Delhi, Bengaluru, Hyderabad, Chennai, Kolkata

IST can also stand for Irish Standard Time or Israel Standard Time. On this site IST always means India Standard Time (Asia/Kolkata).

GST and IST, answered

What is the time difference between GST and IST?

India Standard Time is 1 hour 30 minutes ahead of Gulf Standard Time all year.

What is a good meeting time for GST and IST?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 3:30 PM GST, which is 10:30 AM to 5:00 PM IST.

Does daylight saving time affect GST to IST?

Neither zone observes daylight saving time, so the difference never changes.

Which GST does the GST to IST converter use?

GST can also mean South Georgia Time (UTC−2). Here GST means Gulf Standard Time (Asia/Dubai).

Which IST does the GST to IST converter use?

IST can also stand for Irish Standard Time or Israel Standard Time. On this site IST always means India Standard Time (Asia/Kolkata).