Vienna is 5 hours behind Vietnam. Midday in Vienna lines up with 17:00 in Vietnam.
Vienna is in the Europe/Vienna timezone. Vietnam is in Asia/Ho_Chi_Minh. The difference is 5 hours.
Working hours overlap
There is a 3-hour window each day where both Vienna and Vietnam are within standard business hours (09:00–17:00).
00:0006:0012:0018:0024:00
Vienna
Vietnam
Overlap (3h)
When to schedule across time zones
Both Vienna and Vietnam are in standard hours simultaneously for 3h per day.
09:00 Vienna / 14:00 Ho Chi Minh City✓ Both working
10:00 Vienna / 15:00 Ho Chi Minh City✓ Both working
11:00 Vienna / 16:00 Ho Chi Minh City✓ Both working
Based on standard 09:00–17:00 working hours in each location's local time.
Upcoming public holidays
⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.
Vienna6 holidays
Aug 15Assumption Day
Oct 26National Holiday
Nov 1All Saints' Day
Dec 8Immaculate Conception
Dec 25Christmas Day
Vietnam1 holiday
Sep 2National Day
How to work with Vienna and Vietnam time zones
Working across Vienna (Austria) and Vietnam (Vietnam) involves a 5-hour gap. The good news: there is a 3-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.
💡 How to schedule across these time zones
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09:00–10:00 in Vienna = 14:00–15:00 in Vietnam. Both sides are in standard business hours during this window.
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10:00–11:00 in Vienna = 15:00–16:00 in Vietnam. Both sides are in standard business hours during this window.
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11:00–12:00 in Vienna = 16:00–17:00 in Vietnam. Both sides are in standard business hours during this window.
DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.
Use the time slider above to find the exact equivalent time for any moment in Vienna. The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.
