IST → GMT Converter
India to London — BPO, software, and finance coordination. India's morning catches London's early hours; afternoons require India late-evening.
IST → GMT
12:10 AM
India Standard Time (GMT+5:30)
Friday, June 12, 2026
UTC+5:30 (DST active)
7:40 PM
British Summer Time (GMT+1)
Thursday, June 11, 2026
UTC+1 (DST active)
Time Zone Converter
IST·New Delhi
12:10 AM
Friday, June 12, 2026
GMT·London
7:40 PM
Thursday, June 11, 2026
Compare Times
| IST | GMT |
|---|
Morning
| IST | GMT |
|---|---|
| 12:00 AM IST | 6:30 PM GMT |
| 1:00 AM IST | 7:30 PM GMT |
| 2:00 AM IST | 8:30 PM GMT |
| 3:00 AM IST | 9:30 PM GMT |
| 4:00 AM IST | 10:30 PM GMT |
| 5:00 AM IST | 11:30 PM GMT |
| 6:00 AM IST | 12:30 AM GMT |
| 7:00 AM IST | 1:30 AM GMT |
| 8:00 AM IST | 2:30 AM GMT |
| 9:00 AM IST | 3:30 AM GMT |
| 10:00 AM IST | 4:30 AM GMT |
| 11:00 AM IST | 5:30 AM GMT |
Afternoon
| IST | GMT |
|---|---|
| 12:00 PM IST | 6:30 AM GMT |
| 1:00 PM IST | 7:30 AM GMT |
| 2:00 PM IST | 8:30 AM GMT |
| 3:00 PM IST | 9:30 AM GMT |
| 4:00 PM IST | 10:30 AM GMT |
Evening
| IST | GMT |
|---|---|
| 5:00 PM IST | 11:30 AM GMT |
| 6:00 PM IST | 12:30 PM GMT |
| 7:00 PM IST | 1:30 PM GMT |
| 8:00 PM IST | 2:30 PM GMT |
| 9:00 PM IST | 3:30 PM GMT |
| 10:00 PM IST | 4:30 PM GMT |
| 11:00 PM IST | 5:30 PM GMT |
Frequently Asked Questions: IST to GMT
What is the time difference between India Standard Time and UK Time?
GMT is 5 hours 30 minutes behind IST (standard time).
What time is midnight in IST in GMT?
Midnight (12:00 AM) in India Standard Time translates to 6:30 PM GMT in UK Time.
When do business hours overlap between IST and GMT?
The business hours overlap window is 14:30–17:00 IST (09:00–11:30 GMT). The shared window is limited; aim for the earlier part of this range when possible.
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
GMT is 5 hours 30 minutes behind IST (standard time).
Daylight Saving Time: GMT observes DST; IST does not. The offset between them shifts by 1 hour twice a year — in spring and autumn — when GMT changes its clocks.
Best time to call London from New Delhi
Planning a remote meeting or international call? The optimal business hours overlap between New Delhi and London is moderate, with a limited shared window to work with.
Try Meeting Planner for multi-city group scheduling →IST
14:30–17:00
India Time
GMT
09:00–11:30
Greenwich Time
Recommended time: 15:30 IST / 10:00 GMT
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
IST · India Time
Standard offset +05:30
India Time remains on a constant standard offset for the year.
India does not observe daylight saving time. The IST offset of UTC+5:30 is constant year-round. Note: 'IST' is sometimes ambiguous — it can also refer to Irish Standard Time (Ireland's summer time). On TimeAtlas, IST refers exclusively to India Standard Time.
GMT · Greenwich Time
Standard offset +00:00
- Starts
- Mar 29, 2026 · 01:00 → 02:00
- last_sunday_of_march
- Ends
- Oct 25, 2026 · 02:00 → 01:00
- last_sunday_of_october
- Daylight time
- BST · +01:00
GMT countries vary. The UK, Ireland, and Portugal observe summer time; Iceland and most of West Africa remain on GMT year-round.
Principal Cities
IST — India Time
- MumbaiIndia
- DelhiIndia
- BangaloreIndia
- HyderabadIndia
GMT — Greenwich Time
- LondonUnited Kingdom
- DublinIreland
- LisbonPortugal
- CasablancaMorocco
Flight Information
Route
BOM ↔ LHR
Avg. flight time
9h
Direct flights
Available
~9h direct flight.