Vietnam is 6 hours ahead of Lisbon. Midday in Vietnam lines up with 06:00 in Lisbon.
Vietnam observes Asia/Ho_Chi_Minh and Lisbon observes Europe/Lisbon — a 6 hours gap between them.
Shared working hours
There is a 2-hour window each day where both Vietnam and Lisbon are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
Vietnam
Lisbon
Overlap (2h)
Optimal meeting slots
Vietnam and Lisbon share 2 hours of business hours overlap daily.
15:00 Ho Chi Minh City / 09:00 Lisbon✓ Both working
16:00 Ho Chi Minh City / 10:00 Lisbon✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Upcoming public holidays
Vietnam
No upcoming public holidays this year.
Lisbon6 holidays
Oct 5Republic DaySOON
Nov 1All Saints Day
Dec 1Restoration of Independence
Dec 8Immaculate Conception
Dec 25Christmas Day
How to work with Vietnam and Lisbon time zones
Coordinating between Vietnam (Vietnam) and Lisbon (Portugal) means working around a 6-hour time difference. The 2-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.
💡 How to schedule across these time zones
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Schedule at 15:00–16:00 (Vietnam) for a 09:00–10:00 slot in Lisbon — the sweet spot where both teams are working.
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Schedule at 16:00–17:00 (Vietnam) for a 10:00–11:00 slot in Lisbon — the sweet spot where both teams are working.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any Vietnam time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
