Gulf Standard Time
GST means UTC+04:00 throughout the year.
TIME ZONE CONVERTER
GST to IST
Time Converter
Convert Gulf Standard Time to India Standard Time. Compare dates, seasonal differences and meeting hours.
GST is 1h 30m behind IST in 2026.
9 AM GST = 10:30 AM IST
Selected date: November 4, 2026. Fixed abbreviations retain their stated UTC offsets.
THE QUICK REFERENCE
CSVGST to IST conversion table
November 4, 2026 · Date changes are marked.
View the full 24-hour table
| GST | 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 |
| GST | IST |
|---|---|
| 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 |
Starting with the IST working day
These examples start on 2026-11-04 in IST.
09:00 IST07:30 →GST · 2026-11-04
17:00 IST15:30 →GST · 2026-11-04
Which time-zone meaning are we using?
India Standard Time
IST means UTC+05:30 throughout the year.
Other meanings: Israel Standard Time · Irish Standard Time.
ONE CLOCK TIME. THE WHOLE YEAR.
Year CSV09:00 GST to IST throughout 2026
09:00 in GST converts to 10:30 in IST on every date in 2026. The destination has the same calendar date.
Every calendar date is included, not just workdays. Date ranges include both endpoints. Based on IANA 2026e; future rules may change.
DON’T LOSE A DAY
When does GST time become a different date in IST?
Your complete source day: 2026-11-04. Each range shows which destination date to use.
GST · 2026-11-0400:00–22:30UTC+04:00
IST · 2026-11-0401:30–24:00UTC+05:30 Same date
GST · 2026-11-0422:30–24:00UTC+04:00
IST · 2026-11-0500:00–01:30UTC+05:30 Next day
Range starts are included; ends are excluded. 24:00 means midnight at the end of that date. Repeated hours appear separately with their UTC offsets. The strip is proportional to elapsed time.
THE BIGGER PICTURE
2026Some things stay in sync.
The difference between GST and IST stays the same throughout 2026.
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
+1h 30m
Neither selected clock changes its UTC offset during 2026.
CLOCK CHANGES
No upcoming clock adjustment
Both selected labels are fixed offsets, so seasonal clock changes do not alter this conversion.
PLAN BEYOND A SINGLE DAY
Daily CSVGST–IST working hours through 2026
Every date calculated with your working windows. 261 selected GST workdays; public holidays are not applied.
Least shared time6h 30m
Most common6h 30m
Most shared time6h 30m
Days without a 60-min slot0 / 261
A start time that survives the whole year.
Start a 60-minute meeting in GST 09:00–14:30.
These starts fit both working windows on every selected GST workday in 2026, using a 15-minute start grid. The end of each range is the last valid start.
GST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. IST: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.
Calculation details and repeated hours
Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.
THE DETAILS THAT MATTER
GST to IST: useful answers
Does the GST–IST time difference change in 2026?
The difference stays constant throughout 2026: IST is 1h 30m ahead compared with GST.
Does this conversion change the calendar date?
09:00 in GST on 2026-11-04 is 10:30 in IST on 2026-11-04. This selected time stays on the same date in both places. Other times can cross midnight.
Can GST and IST meet during working hours?
Your selected working windows share 6h 30m on 2026-11-04. The planner above checks the whole meeting duration and shows suitable start times. Edit the windows to match your team.
Related time-zone meanings and conversions
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Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology