The best time to call London from Colombo is 1.5 PM–5 PM your time (Colombo). London, UK is 4 hours behind Colombo, Sri Lanka. You have 3.5 hours of business hours overlap for scheduling calls.
Call between 1.5 PM–5 PM Colombo time. This is 9 AM–0.5 PM in London.
Colombo and London share 3.5 hours of overlapping business hours (9 AM – 5 PM local time).
The best time to call London from Colombo is 1.5 PM–5 PM Colombo time. This gives you 3.5 hours of business hours overlap.
London is 4 hours behind Colombo.
Avoid calling before 11.5 AM your time (they haven't started their day).
Yes, Colombo and London have approximately 3.5 hours of overlapping business hours per day.
You have 3.5 hours of overlap. Call during 1.5 PM–5 PM your time for the best results.
Both in business hours Both awake One outside comfort zone Sleeping hours
Colombo: 1.5 PM–5 PM GMT+5:30
London: 9 AM–0.5 PM GMT+1
| Colombo (GMT+5:30) | London (GMT+1) | Status |
|---|---|---|
| 7 AM | 3 AM | 🔴 They're sleeping |
| 8 AM | 4 AM | 🔴 They're sleeping |
| 9 AM | 5 AM | 🔴 They're sleeping |
| 10 AM | 6 AM | 🔴 They're sleeping |
| 11 AM | 7 AM | 🟡 They're awake |
| 12 PM | 8 AM | 🟡 They're awake |
| 1 PM | 9 AM | ✅ Both in office |
| 2 PM | 10 AM | ✅ Both in office |
| 3 PM | 11 AM | ✅ Both in office |
| 4 PM | 12 PM | ✅ Both in office |
| 5 PM | 1 PM | 🟡 They're awake |
| 6 PM | 2 PM | 🟡 They're awake |
| 7 PM | 3 PM | 🟡 They're awake |
| 8 PM | 4 PM | 🟡 They're awake |
| 9 PM | 5 PM | 🟡 They're awake |