Kolkata to Vienna Time Converter

Kolkata is 3 hours 30 minutes ahead

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

Vienna

Austria · -3.5h

05:30

London

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

Frequently Asked Questions

How many hours difference between Kolkata and Vienna?

The offset is 3 hours 30 minutes — Kolkata is ahead of Vienna. Timezones: Asia/Kolkata and Europe/Vienna.

What is the best time to schedule a call between Kolkata and Vienna?

There is a 4.5 hours window where both locations are within standard business hours (09:00–17:00). Best time: around 13:00 Kolkata / 09:00 Vienna.

Will DST change the time gap between Kolkata and Vienna?

Neither Kolkata nor Vienna has a DST transition this week. The 3 hours 30 minutes gap remains consistent.

When it is 12:00 noon in Kolkata, what time is it in Vienna?

Noon in Kolkata corresponds to 8:30 AM in Vienna.

How can I quickly find the current time in Vienna from Kolkata?

Type any time in the input bar (e.g. "9am", "14:30") or use the slider. All locations including Vienna update at the same time.

Does Vienna have holidays coming up that could affect scheduling?

Yes — Vienna has an upcoming public holiday: Assumption Day on August 15. Check the holiday panel above before confirming meetings.

What timezone is Kolkata in, and what timezone is Vienna in?

Kolkata is in the Asia/Kolkata timezone. Vienna is in Europe/Vienna. The difference is 3 hours 30 minutes.

Optimal meeting slots

Kolkata and Vienna share 4.5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

13:00 Kolkata / 09:00 Vienna✓ Both working

14:00 Kolkata / 10:00 Vienna✓ Both working

15:00 Kolkata / 11:00 Vienna✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

How far apart are Kolkata and Vienna?

Kolkata is 3 hours 30 minutes ahead of Vienna. When Kolkata clocks hit noon, Vienna reads 08:00.

Kolkata observes Asia/Kolkata and Vienna observes Europe/Vienna — a 3.5 hours 30 minutes gap between them.

Daily overlap window

Every working day, Kolkata and Vienna are both in business hours for 4.5 hours simultaneously.

00:0006:0012:0018:0024:00

Kolkata

Vienna

Overlap (4.5h)

Holiday calendar for both locations

Kolkata

No upcoming public holidays this year.

Vienna6 holidays

Aug 15Assumption Day

Oct 26National Holiday

Nov 1All Saints' Day

Dec 8Immaculate Conception

Dec 25Christmas Day

Working across Kolkata and Vienna

Coordinating between Kolkata (India) and Vienna (Austria) means working around a 3.5-hour time difference. The 4.5-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 Best practice for cross-timezone meetings

✅

Schedule at 13:00–14:00 (Kolkata) for a 09:00–10:00 slot in Vienna — the sweet spot where both teams are working.

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Schedule at 14:00–15:00 (Kolkata) for a 10:00–11:00 slot in Vienna — the sweet spot where both teams are working.

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Schedule at 15:00–16:00 (Kolkata) for a 11:00–12:00 slot in Vienna — 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.

Install ClockinSync Free →

Drag the slider at the top to convert any Kolkata time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

Quick time conversions: Kolkata → Vienna

Common reference points to help you plan across the time difference.

For every 6:00 PM in Kolkata, it's simultaneously 2:30 PM in Vienna.

If it's 10:00 AM where I am in Kolkata, what does Vienna show?—6:30 AM

11:00 AMin Kolkata→7:30 AMin Vienna

When Kolkata clocks show 8:00 AM, Vienna reads 4:30 AM.

7:00 PMin Kolkata→3:30 PMin Vienna

If I call at 7:00 AM from Kolkata, what time is it in Vienna?—3:30 AM

Kolkata ↔ Vienna

4h of business hours overlap daily (09:00–17:00)

Kolkata

Vienna