London & Hanoi Time Difference
🕐 Live Timezone Overlap: London & Hanoi
Meetings between London and Hanoi hinge on a 3-hour window each working day. London sits 6 hours ahead of Hanoi at the time of writing, which puts the comfortable overlap at 9:00 AM to 12:00 PM London time. Teams that work across these two cities tend to anchor their week-on-week sync into that block and push everything else to written updates. The widget below shows the exact mapping in both directions, including the small DST seasonal shift when one or both cities change clocks.
Time Difference: London and Hanoi
Hanoi is currently 6 hours ahead of London. The live offsets are London UTC+1 and Hanoi UTC+7. London observes daylight saving and Hanoi does not, so the offset shifts twice a year if both sides aren't already aligned.
London observes daylight saving time, and Hanoi does not. When either side switches, the offset shifts by an hour. The US and Europe also change clocks on different weekends, so for one week in spring and one in autumn the usual offset between US and European cities is off by an hour. Always confirm with the live tool above when you're scheduling a recurring meeting that spans a DST changeover.
Best Times to Meet
Inside the 3-hour overlap, the best slots depend on local culture. London tends to favour mid-morning meetings; Hanoi works 9am–6pm as a default. Aim for the middle of the window where neither side is just starting or wrapping up. Avoid Friday afternoons if the other party has a strong end-of-week culture, and skip lunchtime in whichever city is in the 12–2pm block.
Working Hours Overlap Explained
London operates on Europe/London (currently UTC+1). Hanoi operates on Asia/Bangkok (currently UTC+7). The table below maps a standard 9:00 AM–6:00 PM day in London to Hanoi's local time.
| London time | Hanoi time | Status |
|---|---|---|
| 9:00 AM | 3:00 PM | Hanoi in business hours |
| 10:00 AM | 4:00 PM | Hanoi in business hours |
| 11:00 AM | 5:00 PM | Hanoi in business hours |
| 12:00 PM | 6:00 PM | Hanoi wrapping up |
| 1:00 PM | 7:00 PM | Hanoi outside hours |
| 2:00 PM | 8:00 PM | Hanoi outside hours |
| 3:00 PM | 9:00 PM | Hanoi outside hours |
| 4:00 PM | 10:00 PM | Hanoi outside hours |
| 5:00 PM | 11:00 PM | Hanoi outside hours |
| 6:00 PM | 12:00 AM | Hanoi outside hours |
Tips for Scheduling Across London and Hanoi
- Aim for around 10:30 AM London time: the middle of the overlap leaves room for both sides if the call runs long.
- London observes daylight saving but Hanoi does not, so your offset shifts twice a year. Lock recurring meetings to local time in the city that doesn't change clocks.
- Check Vietnam's public holiday calendar in advance: a few national holidays shift entire working weeks.
- Most UK office workers default to 9am-5:30pm; Fridays often wind down by 4pm.
- A 6-hour gap is workable but tight. Hold the live meeting for decisions; push status updates to written async.
Public Holidays and Working Weeks
United Kingdom runs a Monday–Friday working week with New Year's Day (01-01) and May Bank Holiday (first Monday in May) among the key closures. Vietnam's major holidays include a standard public holiday set. Cross-check both calendars when scheduling recurring meetings: a 30-minute call in one city's holiday week typically gets a much lower attendance rate than the same slot a week later.