IST/IDT to GMT time converter
GMT is 3 hours behind IST/IDT. When it is 9:00 AM in IST/IDT, it is 6:00 AM in GMT.
10:16 PM in IST/IDT, Friday, October 16, 2026
Shared working hours (9:00–18:00)
IST/IDT to GMT conversion table
Every hour of today in IST/IDT and the matching time in GMT. Light rows are typical working hours (9:00–18:00).
| IST/IDT | GMT |
|---|---|
| 12:00 AM | 9:00 PM−1 day |
| 1:00 AM | 10:00 PM−1 day |
| 2:00 AM | 11:00 PM−1 day |
| 3:00 AM | 12:00 AM |
| 4:00 AM | 1:00 AM |
| 5:00 AM | 2:00 AM |
| 6:00 AM | 3:00 AM |
| 7:00 AM | 4:00 AM |
| 8:00 AM | 5:00 AM |
| 9:00 AM | 6:00 AM |
| 10:00 AM | 7:00 AM |
| 11:00 AM | 8:00 AM |
| 12:00 PM | 9:00 AM |
| 1:00 PM | 10:00 AM |
| 2:00 PM | 11:00 AM |
| 3:00 PM | 12:00 PM |
| 4:00 PM | 1:00 PM |
| 5:00 PM | 2:00 PM |
| 6:00 PM | 3:00 PM |
| 7:00 PM | 4:00 PM |
| 8:00 PM | 5:00 PM |
| 9:00 PM | 6:00 PM |
| 10:00 PM | 7:00 PM |
| 11:00 PM | 8:00 PM |
Best time to call or meet
Both sides are at work from 12:00 PM – 6:00 PM in IST/IDT (9:00 AM – 3:00 PM in GMT).
Daylight saving time and the difference
The difference changes during the year because IST/IDT and GMT switch clocks on different dates:
- Oct 16, 2026 – Oct 25, 2026: -3h
- Oct 25, 2026 – Mar 26, 2027: -2h
- Mar 26, 2027 – Oct 16, 2027: -3h
More conversions
Questions and answers
What is the time difference between IST/IDT and GMT?
GMT is 3 hours behind IST/IDT.
What time is it in GMT when it is 9 AM in IST/IDT?
When it is 9:00 AM in IST/IDT, it is 6:00 AM in GMT.
When is the best time to call GMT from IST/IDT?
Both sides are at work from 12:00 PM – 6:00 PM in IST/IDT (9:00 AM – 3:00 PM in GMT).
Does the time difference between IST/IDT and GMT change?
Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.