Time Difference: Hanoi to London
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Hanoi vs London timezone guide
Hanoi (Vietnam) uses the Asia/Ho_Chi_Minh timezone at UTC+7, while London (UK) uses Europe/London at UTC+0. This means London is 7 hours behind Hanoi (based on standard offsets — the live difference above accounts for daylight saving time).
Best meeting times between Hanoi and London
Standard 9-to-5 working hours overlap by 2 hours per day. The shared window is 3pm–5pm in Hanoi, which is 9am–11am in London. Schedule recurring meetings inside that window and both teams stay inside standard working hours.
Hour-by-hour planner
| Hanoi | London | Status |
|---|---|---|
| 6am | 12am | Hanoi early, London asleep |
| 7am | 1am | Hanoi early, London asleep |
| 8am | 2am | Hanoi early, London asleep |
| 9am | 3am | Hanoi working hours, London asleep |
| 10am | 4am | Hanoi working hours, London asleep |
| 11am | 5am | Hanoi working hours, London asleep |
| 12pm | 6am | One side outside 9-to-5 but still awake |
| 1pm | 7am | One side outside 9-to-5 but still awake |
| 2pm | 8am | One side outside 9-to-5 but still awake |
| 3pm | 9am | Both at work — ideal meeting time |
| 4pm | 10am | Both at work — ideal meeting time |
| 5pm | 11am | One side outside 9-to-5 but still awake |
| 6pm | 12pm | One side outside 9-to-5 but still awake |
| 7pm | 1pm | One side outside 9-to-5 but still awake |
| 8pm | 2pm | One side outside 9-to-5 but still awake |
| 9pm | 3pm | One side outside 9-to-5 but still awake |
| 10pm | 4pm | Hanoi late evening, London working hours |
Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.
Daylight saving time between Hanoi and London
London observes daylight saving time, but Hanoi does not. That means the difference between the two cities changes seasonally — by one hour, around London's transition dates.
- Jan 1 → Mar 29Hanoi is 7 hours ahead London
- Mar 29 → Oct 25Hanoi is 6 hours ahead London
- Oct 25 → Jan 1Hanoi is 7 hours ahead London
Distance between Hanoi and London
Hanoi and London are 9,234 km apart along the great-circle route. A direct flight takes roughly ~11h 52m, depending on aircraft type, winds, and routing.