This IST to GST converter turns any time in India Standard Time (IST) into Gulf Standard Time (GST), using your device clock so daylight saving is applied automatically. GST is 1 hour 30 minutes behind IST. IST is UTC+5:30; GST is UTC+4.
IST covers Mumbai, Delhi, Bengaluru; GST covers Dubai, Abu Dhabi, Muscat. Neither zone observes daylight saving time, so the difference is the same every day of the year.
IST and GST UTC offsets
IST
UTC+5:30
India Standard Time
No daylight saving time
GST
UTC+4
Gulf Standard Time
No daylight saving time
IST to GST conversion table
| IST | GST |
|---|---|
| 12 am | 10:30 pmprevious day |
| 3 am | 1:30 am |
| 6 am | 4:30 am |
| 8 am | 6:30 am |
| 9 am | 7:30 am |
| 10 am | 8:30 am |
| 11 am | 9:30 am |
| 12 pm | 10:30 am |
| 1 pm | 11:30 am |
| 2 pm | 12:30 pm |
| 3 pm | 1:30 pm |
| 4 pm | 2:30 pm |
| 5 pm | 3:30 pm |
| 6 pm | 4:30 pm |
| 8 pm | 6:30 pm |
| 10 pm | 8:30 pm |
Frequently asked questions
What is the time difference between IST and GST?
GST is 1 hour 30 minutes behind IST. That comes from the UTC offsets: IST is UTC+5:30 and GST is UTC+4. For example, 9 am IST = 7:30 am GST.
Is GST ahead of or behind IST?
GST is 1 hour 30 minutes behind IST, so when it is noon in IST it is 10:30 am in GST. Ahead means the clock there already shows a later time; a call at 5 pm IST lands at 3:30 pm GST.
Does IST or GST observe daylight saving time in 2026?
No. Neither IST nor GST changes its clocks, so the 1 hour 30 minutes difference holds every day of the year. That makes recurring meetings between Mumbai and Dubai easy to keep at a fixed local time on both ends.
What is the best time for a meeting between IST and GST?
Standard office hours (9 am to 5 pm) overlap from 10.5 am to 5 pm IST, which is 9 am to 3.5 pm GST. Pick a slot inside that window and both sides stay within a normal working day. Check the daylight saving dates above, because the window moves by an hour when only one side has changed clocks.
Which cities use IST and GST?
IST (India Standard Time) is used in Mumbai, Delhi, Bengaluru, Kolkata. GST (Gulf Standard Time) is used in Dubai, Abu Dhabi, Muscat. Some cities inside a zone skip daylight saving, noted in parentheses, so their offset matches only part of the year.