India is exactly 1 hour 30 minutes ahead of the Gulf. Gulf Standard Time sits at UTC+04:00 and Indian Standard Time at UTC+05:30, and neither observes daylight saving — so this gap is one of the few international differences that never changes at all.
A fixed, easy pair
With no seasonal shift on either side, a 10 a.m. meeting in Dubai is always 11:30 a.m. in India. The working weeks differ more than the clocks do: several Gulf states run Sunday to Thursday or Monday to Friday depending on the country and sector. For the offset reference see the IST offset table.