Convert India Standard Time (IST) to Greenwich Mean Time (GMT), with daylight saving applied for the exact date you pick.
Tue, Oct 27
Tue, Oct 27 Same day
| Su | Mo | Tu | We | Th | Fr | Sa |
|---|
IST 9 to 5 GMT 9 to 5
GMT is 5 hours 30 minutes behind IST.
The same conversion works for every city on these clocks, such as India to Greenwich and Delhi to Greenwich.
Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.
Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.
Shaded rows fall inside working hours in both places.
| New Delhi (IST) | Greenwich (GMT) | Working hours |
|---|---|---|
| 12:00 AM | 6:30 PM previous day | |
| 1:00 AM | 7:30 PM previous day | |
| 2:00 AM | 8:30 PM previous day | |
| 3:00 AM | 9:30 PM previous day | |
| 4:00 AM | 10:30 PM previous day | |
| 5:00 AM | 11:30 PM previous day | |
| 6:00 AM | 12:30 AM | |
| 7:00 AM | 1:30 AM | |
| 8:00 AM | 2:30 AM | |
| 9:00 AM | 3:30 AM | |
| 10:00 AM | 4:30 AM | |
| 11:00 AM | 5:30 AM | |
| 12:00 PM | 6:30 AM | |
| 1:00 PM | 7:30 AM | |
| 2:00 PM | 8:30 AM | |
| 3:00 PM | 9:30 AM | Both working |
| 4:00 PM | 10:30 AM | Both working |
| 5:00 PM | 11:30 AM | |
| 6:00 PM | 12:30 PM | |
| 7:00 PM | 1:30 PM | |
| 8:00 PM | 2:30 PM | |
| 9:00 PM | 3:30 PM | |
| 10:00 PM | 4:30 PM | |
| 11:00 PM | 5:30 PM |
Every hour of the India Standard Time day, plus the common half hours, and their GMT equivalents.
| India Standard Time | GMT 5 h 30 min behind, all year |
|---|---|
| 12:00 AM | 6:30 PM (previous day) |
| 1:00 AM | 7:30 PM (previous day) |
| 2:00 AM | 8:30 PM (previous day) |
| 3:00 AM | 9:30 PM (previous day) |
| 4:00 AM | 10:30 PM (previous day) |
| 5:00 AM | 11:30 PM (previous day) |
| 6:00 AM | 12:30 AM |
| 7:00 AM | 1:30 AM |
| 8:00 AM | 2:30 AM |
| 9:00 AM | 3:30 AM |
| 9:30 AM | 4:00 AM |
| 10:00 AM | 4:30 AM |
| 10:30 AM | 5:00 AM |
| 11:00 AM | 5:30 AM |
| 11:30 AM | 6:00 AM |
| 12:00 PM | 6:30 AM |
| 12:30 PM | 7:00 AM |
| 1:00 PM | 7:30 AM |
| 1:30 PM | 8:00 AM |
| 2:00 PM | 8:30 AM |
| 2:30 PM | 9:00 AM |
| 3:00 PM | 9:30 AM |
| 3:30 PM | 10:00 AM |
| 4:00 PM | 10:30 AM |
| 4:30 PM | 11:00 AM |
| 5:00 PM | 11:30 AM |
| 5:30 PM | 12:00 PM |
| 6:00 PM | 12:30 PM |
| 7:00 PM | 1:30 PM |
| 8:00 PM | 2:30 PM |
| 9:00 PM | 3:30 PM |
| 10:00 PM | 4:30 PM |
| 11:00 PM | 5:30 PM |
Neither India Standard Time nor Greenwich Mean Time changes its clocks in the next 18 months.
India Standard Time is UTC+5:30 all year. The whole country keeps a single clock, and India has not observed daylight saving time since the 1940s, so IST never changes.
IST can also stand for Irish Standard Time or Israel Standard Time. On this site IST always means India Standard Time (Asia/Kolkata).
Greenwich Mean Time is UTC+0 and, for everyday purposes, the same clock as UTC. It does not shift for daylight saving time.
The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.
Greenwich Mean Time is 5 hours 30 minutes behind India Standard Time all year.
Greenwich uses Greenwich Mean Time. Greenwich Mean Time is 5 hours 30 minutes behind India Standard Time all year. Type any IST time into the IST to GMT converter to see the Greenwich time for any date.
9:00 AM IST is 3:30 AM GMT.
12:00 PM IST is 6:30 AM GMT.
10:00 AM IST is 4:30 AM GMT.
5:00 PM IST is 11:30 AM GMT.
No, GMT is behind IST. Greenwich Mean Time is 5 hours 30 minutes behind India Standard Time all year.
Working days of 9 AM to 5 PM overlap from 2:30 PM to 5:00 PM IST, which is 9:00 AM to 11:30 AM GMT.
Neither zone observes daylight saving time, so the difference never changes.
IST can also stand for Irish Standard Time or Israel Standard Time. On this site IST always means India Standard Time (Asia/Kolkata).
The UK uses GMT only in winter and British Summer Time (BST, UTC+1) in summer. For London time, use the UK time pages.