Vietnam is 6 hours ahead of Portugal. Midday in Vietnam lines up with 06:00 in Portugal.
Vietnam observes Asia/Ho_Chi_Minh and Portugal observes Europe/Lisbon — a 6 hours gap between them.
Shared working hours
There is a 2-hour window each day where both Vietnam and Portugal are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
Vietnam
Portugal
Overlap (2h)
Optimal meeting slots
Vietnam and Portugal 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
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
Vietnam1 holiday
Sep 2National Day
Portugal7 holidays
Aug 15Assumption Day
Oct 5Republic Day
Nov 1All Saints Day
Dec 1Restoration of Independence
Dec 8Immaculate Conception
How to work with Vietnam and Portugal time zones
Coordinating between Vietnam (Vietnam) and Portugal (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
✅
Schedule at 15:00–16:00 (Vietnam) for a 09:00–10:00 slot in Portugal — the sweet spot where both teams are working.
✅
Schedule at 16:00–17:00 (Vietnam) for a 10:00–11:00 slot in Portugal — 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.
