Best overlap: 1:00 PM to 6:00 PM in Hanoi is 8:00 AM to 1:00 PM in Amsterdam.
If you set up a recurring sync, 1:00 PM to 6:00 PM in Hanoi (8:00 AM to 1:00 PM in Amsterdam) is the natural home for it. With 5 hours of overlap, 1:00 PM in Hanoi (8:00 AM in Amsterdam) is a comfortable, repeatable slot for both sides. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Hanoi Asia/Ho Chi Minh | ||||||||||||||||||||||||
Amsterdam Europe/Amsterdam |
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. -