India and UK Working Hours Overlap in IST
United Kingdom · Europe
24-Hour Timeline
Overlap for Different Work Hours
Adjust your work schedule and see how overlap changes
| UK Hours | Overlap (IST) | Local Time | Duration |
|---|---|---|---|
| 8:00 AM – 5:00 PM | 1:30 PM – 6:00 PM IST | 8:00 AM – 12:30 PM | 4.5 hrs |
| 9:00 AM – 6:00 PM | 2:30 PM – 6:00 PM IST | 9:00 AM – 12:30 PM | 3.5 hrs |
| 10:00 AM – 7:00 PM | 3:30 PM – 6:00 PM IST | 10:00 AM – 12:30 PM | 2.5 hrs |
UK observes daylight saving time. Clocks change twice yearly: UK observes GMT/BST. GMT (UTC+0) Oct–Mar; BST (UTC+1) Mar–Oct. Clocks change last Sunday of March & October.
Your overlap window shifts by 1 hour twice yearly when clocks change.
Note: Work week is Mon–Fri
About This Overlap
The United Kingdom is Europe's financial capital and home to the world's largest Indian diaspora outside India itself — over 1.5 million British-Indians. London's Indian communities are deeply embedded in finance, medicine, and law. IST is 5h 30m ahead in winter (GMT) and 4h 30m ahead in summer (BST). India's midday (12–1 PM) slots hit London early morning (6–7 AM GMT); afternoon calls (3–4 PM IST) land in London breakfast time (9–10 AM BST in summer).
Last updated: 20 March 2026
Frequently Asked Questions
When do India and UK share working hours?
Overlap: 2:30 PM – 6:00 PM IST — 3.5 hours
How many hours overlap does IST have with UK?
Indian Standard Time (IST, UTC+5:30) and UK have a 3.5-hour overlap window. The exact span depends on daylight saving time in UK.
What is the best time to schedule a call between India and UK?
Schedule calls between 2:30 PM and 6:00 PM IST (9:00 AM–12:30 PM UK local time). This ensures both parties are within business hours.
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