Best overlap: 1:00 PM to 6:00 PM in Hanoi is 8:00 AM to 1:00 PM in Paris.
The hours that work for both Hanoi and Paris are 1:00 PM to 6:00 PM (Hanoi) and 8:00 AM to 1:00 PM (Paris). With about 5 hours of overlap, there's comfortable room for a daily stand-up — 1:00 PM in Hanoi / 8:00 AM in Paris works well. One seasonal catch: Paris springs forward and falls back, but Hanoi doesn't, so the gap changes by an hour for several months of the year.
| 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 | ||||||||||||||||||||||||
Paris Europe/Paris |
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. -
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