IST to GST Time Converter
Type a time in IST to see it in GST, with daylight saving handled for the date you pick. Every hour of the day is in the table below, and the meeting planner shows when both working days overlap.
In Dubai
7:30 amGST
9:00 am IST on Wed 14 Jan 2026 is 7:30 am GST the same day. Dubai is 1 h 30 min behind India.
- Date there
- Wednesday 14 January 2026
- Offsets
- IST UTC+5:30 · GST UTC+4
- Date used
- Example day: Wednesday 14 January 2026
How this works: Method, 3 sources,
How this works
Method
Here IST means India Standard Time, UTC+5:30 all year; GST means Gulf Standard Time, UTC+4 all year. So GST is 1 h 30 min behind IST all year. Two 9-to-5 working days overlap by 6 h 30 min all year. Full method
Sources
Changes
- 15 more conversion pages (IST to CST, BST to IST, SGT, GST, JST, MST and more); each conversion page shows all 24 hours with working hours shaded, and its best meeting times.
- The pickers find about a thousand more cities, states and countries (Seattle, Bangalore, Texas), and each conversion page names the next clock change on either side.
- The converter opens on the time now, live, with a Now choice beside the time, and the main converter starts from your own time zone.
- First published, with a world clock, pages for the time in 31 places and 15 common conversions such as PST to IST.
How to convert IST to GST
Here IST means India Standard Time, UTC+5:30 all year; GST means Gulf Standard Time, UTC+4 all year. So GST is 1 h 30 min behind IST all year. Two 9-to-5 working days overlap by 6 h 30 min all year.
IST to GST is the sum families in India do before calling relatives in Dubai, Abu Dhabi or Muscat, and the one that Indian companies with Gulf clients use to find a meeting slot. Dubai is only 1 h 30 min behind, so nearly the whole Indian working day falls inside Gulf office hours: from 10:30 am to 5:00 pm IST both sides are at work.
Because the gap is fixed, the thing to remember is the direction: Dubai is behind, so subtract. A meeting at 10:00 am in India is 8:30 am in Dubai, which may be before someone there reaches their desk, while a late Indian evening of 10:00 pm is only 8:30 pm in Dubai, often a good hour to catch someone after their working day. Oman keeps the same clock as the UAE, so the sum is the same for Muscat.
Rule of thumb: Subtract 1½ hours from Indian time: 6:00 pm IST is 4:30 pm in Dubai, and 10:00 pm IST is 8:30 pm there.
GST = IST −1:30
- Oman’s zone in the tz database, Asia/Muscat, is a link to Asia/Dubai: Muscat and Dubai keep the same clock. Source: IANA tz database, file backward (links).
Meeting planner: best times for IST and GST
The easiest meetings fall where both working days overlap, shaded dark on the bar. The lighter shading is still between 7 am and 9 pm on both clocks, so one side starts early or stays late.
All year: IST and GST
- Both at work: 10:30 am to 5:00 pm IST is 9:00 am to 3:30 pm GST (6 h 30 min).
- Early or late for one side: 8:30 am to 10:30 am IST is 7:00 am to 9:00 am GST (2 h); 5:00 pm to 9:00 pm IST is 3:30 pm to 7:30 pm GST (4 h).
Both between 9 am and 5 pmBoth between 7 am and 9 pm
IST to GST time conversion table
Every hour of the IST day and the time in GST. The difference is the same all year.
| IST time | GST time |
|---|---|
| 12:00 am | 10:30 pm (day before) |
| 1:00 am | 11:30 pm (day before) |
| 2:00 am | 12:30 am |
| 3:00 am | 1:30 am |
| 4:00 am | 2:30 am |
| 5:00 am | 3:30 am |
| 6:00 am | 4:30 am |
| 7:00 am | 5:30 am |
| 8:00 am | 6:30 am |
| 9:00 am | 7:30 am |
| 10:00 am | 8:30 am |
| 11:00 am | 9:30 am |
| 12:00 pm | 10:30 am |
| 1:00 pm | 11:30 am |
| 2:00 pm | 12:30 pm |
| 3:00 pm | 1:30 pm |
| 4:00 pm | 2:30 pm |
| 5:00 pm | 3:30 pm |
| 6:00 pm | 4:30 pm |
| 7:00 pm | 5:30 pm |
| 8:00 pm | 6:30 pm |
| 9:00 pm | 7:30 pm |
| 10:00 pm | 8:30 pm |
| 11:00 pm | 9:30 pm |
Shaded: 9 am to 5 pm on that clock. Where a row is shaded on both sides, both are at work.
Frequently Asked Questions
What is 9 am IST in GST?
9:00 am IST is 7:30 am GST, all year round.
What is 4 pm IST in Dubai?
4:00 pm in India is 2:30 pm in Dubai, the same day, all year.
Is the time difference between India and the UAE always 1 h 30 min?
Yes. Neither country uses daylight saving time, so the UAE is 1 h 30 min behind India on every date.