Best overlap: 8:00 AM to 1:00 PM in Amsterdam is 1:00 PM to 6:00 PM in Hanoi.
Schedule calls for 8:00 AM to 1:00 PM in Amsterdam — your colleagues in Hanoi will be online from 1:00 PM to 6:00 PM. Around 5 hours of overlap is enough to work comfortably, as long as meetings don't drift to the end of one team's day. Remember that Amsterdam shifts for daylight saving and Hanoi doesn't, so recalculate the overlap after each clock change.
| Local time | 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Amsterdam Europe/Amsterdam | ||||||||||||||||||||||||
Hanoi Asia/Ho Chi Minh |
London to New York is five hours apart, except for the five weeks a year when it isn't. Exact overlap windows for every US zone, the 2026 DST mismatch dates, and where to put the recurring sync. -