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