GMT → IST Converter
London to India — UK-India tech and outsourcing corridor. The 4.5-hour gap (5.5 in summer when UK observes BST) allows afternoon India calls to catch UK morning. One of the most active intercontinental tech pairs.
GMT → IST
7:40 PM
British Summer Time (GMT+1)
Thursday, June 11, 2026
UTC+1 (DST active)
12:10 AM
India Standard Time (GMT+5:30)
Friday, June 12, 2026
UTC+5:30 (DST active)
Time Zone Converter
GMT·London
7:40 PM
Thursday, June 11, 2026
IST·New Delhi
12:10 AM
Friday, June 12, 2026
Compare Times
| GMT | IST |
|---|
Morning
| GMT | IST |
|---|---|
| 12:00 AM GMT | 5:30 AM IST |
| 1:00 AM GMT | 6:30 AM IST |
| 2:00 AM GMT | 7:30 AM IST |
| 3:00 AM GMT | 8:30 AM IST |
| 4:00 AM GMT | 9:30 AM IST |
| 5:00 AM GMT | 10:30 AM IST |
| 6:00 AM GMT | 11:30 AM IST |
| 7:00 AM GMT | 12:30 PM IST |
| 8:00 AM GMT | 1:30 PM IST |
| 9:00 AM GMT | 2:30 PM IST |
| 10:00 AM GMT | 3:30 PM IST |
| 11:00 AM GMT | 4:30 PM IST |
Afternoon
| GMT | IST |
|---|---|
| 12:00 PM GMT | 5:30 PM IST |
| 1:00 PM GMT | 6:30 PM IST |
| 2:00 PM GMT | 7:30 PM IST |
| 3:00 PM GMT | 8:30 PM IST |
| 4:00 PM GMT | 9:30 PM IST |
Evening
| GMT | IST |
|---|---|
| 5:00 PM GMT | 10:30 PM IST |
| 6:00 PM GMT | 11:30 PM IST |
| 7:00 PM GMT | 12:30 AM IST |
| 8:00 PM GMT | 1:30 AM IST |
| 9:00 PM GMT | 2:30 AM IST |
| 10:00 PM GMT | 3:30 AM IST |
| 11:00 PM GMT | 4:30 AM IST |
Frequently Asked Questions: GMT to IST
What is the time difference between UK Time and India Standard Time?
IST is 5 hours 30 minutes ahead of GMT (standard time).
What time is midnight in GMT in IST?
Midnight (12:00 AM) in UK Time translates to 5:30 AM IST in India Standard Time.
When do business hours overlap between GMT and IST?
The business hours overlap window is 09:00–11:30 GMT (14:30–17:00 IST). 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.
IST is 5 hours 30 minutes ahead of GMT (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 New Delhi from London
Planning a remote meeting or international call? The optimal business hours overlap between London and New Delhi is moderate, with a limited shared window to work with.
Try Meeting Planner for multi-city group scheduling →GMT
09:00–11:30
Greenwich Time
IST
14:30–17:00
India Time
Recommended time: 10:30 GMT / 16:00 IST
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
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.
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.
Principal Cities
GMT — Greenwich Time
- LondonUnited Kingdom
- DublinIreland
- LisbonPortugal
- CasablancaMorocco
IST — India Time
- MumbaiIndia
- DelhiIndia
- BangaloreIndia
- HyderabadIndia
Flight Information
Route
LHR ↔ BOM
Avg. flight time
9h
Direct flights
Available
~9h direct flight.