Convert UK time (GMT/BST) to India Standard Time (IST), 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 |
|---|
GMT 9 to 5 IST 9 to 5
IST is 5 hours 30 minutes ahead of GMT.
The same conversion works for every city on these clocks, such as London to India, London to Delhi and England to India.
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.
| London (GMT) | New Delhi (IST) | Working hours |
|---|---|---|
| 12:00 AM | 5:30 AM | |
| 1:00 AM | 6:30 AM | |
| 2:00 AM | 7:30 AM | |
| 3:00 AM | 8:30 AM | |
| 4:00 AM | 9:30 AM | |
| 5:00 AM | 10:30 AM | |
| 6:00 AM | 11:30 AM | |
| 7:00 AM | 12:30 PM | |
| 8:00 AM | 1:30 PM | |
| 9:00 AM | 2:30 PM | Both working |
| 10:00 AM | 3:30 PM | Both working |
| 11:00 AM | 4:30 PM | Both working |
| 12:00 PM | 5:30 PM | |
| 1:00 PM | 6:30 PM | |
| 2:00 PM | 7:30 PM | |
| 3:00 PM | 8:30 PM | |
| 4:00 PM | 9:30 PM | |
| 5:00 PM | 10:30 PM | |
| 6:00 PM | 11:30 PM | |
| 7:00 PM | 12:30 AM next day | |
| 8:00 PM | 1:30 AM next day | |
| 9:00 PM | 2:30 AM next day | |
| 10:00 PM | 3:30 AM next day | |
| 11:00 PM | 4:30 AM next day |
Every hour of the UK time day, plus the common half hours, and their IST equivalents. The second column covers the part of the year when the clocks are on a different gap.
| UK time | IST 4 h 30 min ahead, most of the year (210 days in 2026) | IST 5 h 30 min ahead, about 22 weeks in 2026 |
|---|---|---|
| 12:00 AM | 4:30 AM | 5:30 AM |
| 1:00 AM | 5:30 AM | 6:30 AM |
| 2:00 AM | 6:30 AM | 7:30 AM |
| 3:00 AM | 7:30 AM | 8:30 AM |
| 4:00 AM | 8:30 AM | 9:30 AM |
| 5:00 AM | 9:30 AM | 10:30 AM |
| 6:00 AM | 10:30 AM | 11:30 AM |
| 7:00 AM | 11:30 AM | 12:30 PM |
| 8:00 AM | 12:30 PM | 1:30 PM |
| 9:00 AM | 1:30 PM | 2:30 PM |
| 9:30 AM | 2:00 PM | 3:00 PM |
| 10:00 AM | 2:30 PM | 3:30 PM |
| 10:30 AM | 3:00 PM | 4:00 PM |
| 11:00 AM | 3:30 PM | 4:30 PM |
| 11:30 AM | 4:00 PM | 5:00 PM |
| 12:00 PM | 4:30 PM | 5:30 PM |
| 12:30 PM | 5:00 PM | 6:00 PM |
| 1:00 PM | 5:30 PM | 6:30 PM |
| 1:30 PM | 6:00 PM | 7:00 PM |
| 2:00 PM | 6:30 PM | 7:30 PM |
| 2:30 PM | 7:00 PM | 8:00 PM |
| 3:00 PM | 7:30 PM | 8:30 PM |
| 3:30 PM | 8:00 PM | 9:00 PM |
| 4:00 PM | 8:30 PM | 9:30 PM |
| 4:30 PM | 9:00 PM | 10:00 PM |
| 5:00 PM | 9:30 PM | 10:30 PM |
| 5:30 PM | 10:00 PM | 11:00 PM |
| 6:00 PM | 10:30 PM | 11:30 PM |
| 7:00 PM | 11:30 PM | 12:30 AM (next day) |
| 8:00 PM | 12:30 AM (next day) | 1:30 AM (next day) |
| 9:00 PM | 1:30 AM (next day) | 2:30 AM (next day) |
| 10:00 PM | 2:30 AM (next day) | 3:30 AM (next day) |
| 11:00 PM | 3:30 AM (next day) | 4:30 AM (next day) |
Each row is a stretch of days with one constant difference, split at every clock change.
| Dates | UK time | IST | Difference |
|---|---|---|---|
| Thu, Jan 1, 2026 until Sun, Mar 29, 2026 | GMT | IST | IST 5 h 30 min ahead |
| Sun, Mar 29, 2026 until Sun, Oct 25, 2026 | BST | IST | IST 4 h 30 min ahead |
| Sun, Oct 25, 2026 until Sun, Mar 28, 2027 | GMT | IST | IST 5 h 30 min ahead |
| Sun, Mar 28, 2027 until Sun, Oct 31, 2027 | BST | IST | IST 4 h 30 min ahead |
| Sun, Oct 31, 2027 until Sat, Jan 1, 2028 | GMT | IST | IST 5 h 30 min ahead |
UK time is Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October.
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).
IST is 4 hours 30 minutes ahead of BST for most of the year (210 days in 2026). The gap is 5 hours 30 minutes for about 22 weeks in 2026.
India uses India Standard Time. IST is 4 hours 30 minutes ahead of BST for most of the year (210 days in 2026). The gap is 5 hours 30 minutes for about 22 weeks in 2026. Type any UK time time into the UK time to IST converter to see the India time for any date.
9:00 AM BST is 1:30 PM IST for most of the year (210 days in 2026). 9:00 AM GMT is 2:30 PM IST for about 22 weeks in 2026.
12:00 PM BST is 4:30 PM IST for most of the year (210 days in 2026). 12:00 PM GMT is 5:30 PM IST for about 22 weeks in 2026.
10:00 AM BST is 2:30 PM IST for most of the year (210 days in 2026). 10:00 AM GMT is 3:30 PM IST for about 22 weeks in 2026.
5:00 PM BST is 9:30 PM IST for most of the year (210 days in 2026). 5:00 PM GMT is 10:30 PM IST for about 22 weeks in 2026.
Yes. IST is 4 hours 30 minutes ahead of BST for most of the year (210 days in 2026). The gap is 5 hours 30 minutes for about 22 weeks in 2026.
Working days of 9 AM to 5 PM overlap from 9:00 AM to 12:30 PM BST, which is 1:30 PM to 5:00 PM IST while BST and IST apply.
UK time changes its clocks twice a year; India Standard Time does not. The next change is on Sunday, March 28, 2027 in UK time.
IST can also stand for Irish Standard Time or Israel Standard Time. On this site IST always means India Standard Time (Asia/Kolkata).