Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Vienna to IST

+3h 30m

Vienna

CESTSOURCE

Austria · UTC+02:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

IST

UTC+05:30

HH03

MM30

15:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vienna

IST

12:00 AM

3:30 AM

2:00 AM

5:30 AM

4:00 AM

7:30 AM

6:00 AM

9:30 AM

8:00 AM

11:30 AM

10:00 AM

1:30 PM

12:00 PM

3:30 PM

2:00 PM

5:30 PM

4:00 PM

7:30 PM

6:00 PM

9:30 PM

8:00 PM

11:30 PM

10:00 PM

1:30 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

CEST and IST on the World Map

The map below highlights the CEST (Central European Time) and IST (India Standard Time) timezone regions across the globe.

CEST Zone

→

IST Zone

Explore all world timezones interactively →

CET – Central European Time

UTC+01:00

Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.

Countries in CET

GermanyFranceItalySpainNetherlandsBelgiumAustriaSwitzerlandPolandCzech RepublicSwedenNorwayDenmarkHungaryCroatiaSerbiaSlovakiaSloveniaBosnia and HerzegovinaNorth MacedoniaAlbaniaMontenegroLuxembourgMaltaTunisiaAlgeriaNigeria

Major Cities in CET

ParisBerlinRomeMadridAmsterdamBrusselsViennaWarsawZurichStockholmOsloCopenhagenPragueBudapestBarcelonaMunichMilanLagos

Key Facts about CET

•CET covers more European countries than any other time zone.
•Spain uses CET despite being geographically aligned with GMT/WET.
•The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
•Over 500 million people live in the CET time zone.
•France moved to CET during the German occupation in WWII and never switched back.

Daylight Saving:Yes – switches to CEST

Learn more about CET on Wikipedia

IST – India Standard Time

UTC+05:30

India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.

Countries in IST

IndiaSri Lanka

Major Cities in IST

MumbaiDelhiBangaloreKolkataChennaiHyderabadPuneAhmedabadColomboJaipurLucknowSurat

Key Facts about IST

•India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
•India uses a single time zone despite spanning 30° of longitude.
•IST is one of only a handful of time zones with a 30-minute offset.
•IST is the most populous single time zone in the world with over 1.4 billion people.
•The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.

Daylight Saving:No – UTC+05:30 year-round

Learn more about IST on Wikipedia

About Vienna

Wikipedia

Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.

Population:1.9 million

Metro:2.9 million

Business Hours:8:00 AM - 5:00 PM CET

Currency:EUR (€)

Stock Exchange:Wiener Börse

Key Landmarks

Schönbrunn PalaceSt. Stephen's CathedralBelvedere PalaceHofburgVienna State Opera

Did You Know?

Vienna has more than 50 theaters and opera houses.

Learn more about CEST timezone →

Comparing Time Zones: Vienna and IST

Vienna runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. IST runs on India Standard Time (IST) at UTC+05:30. That puts Vienna 3 hours 30 minutes ahead of IST — a difference of +3h 30m at the current offsets.

In practice, when it is 9:00 AM in Vienna it is 12:30 PM in IST. Midnight in Vienna is 3:30 AM in IST.Vienna observes daylight saving time while IST does not, so the gap narrows or widens by an hour part of the year.

Vienna to IST time conversion table

Vienna (CEST)	IST (IST)	Day
12:00 AM	3:30 AM	same day
6:00 AM	9:30 AM	same day
7:00 AM	10:30 AM	same day
8:00 AM	11:30 AM	same day
9:00 AM	12:30 PM	same day
12:00 PM	3:30 PM	same day
3:00 PM	6:30 PM	same day
5:00 PM	8:30 PM	same day
6:00 PM	9:30 PM	same day
9:00 PM	12:30 AM	next day

Why people convert Vienna to IST time

Scheduling a call from Vienna to IST: a 10:00 AM start in Vienna lands at 1:30 PM in IST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Vienna and IST are inside the 9-to-5 working day between 9:00 AM and 1:30 PM CEST time (12:30 PM–5:00 PM IST). That is roughly 4 hours 30 minutes of usable overlap.
Booking travel or deliveries: tracking IST local time against Vienna keeps pickup windows and arrival estimates honest across the +3h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM CEST" is unambiguous; "3 PM" across a +3h 30m gap is not.
Block 9:00 AM–1:30 PM CEST as the recurring meeting window if you work primarily from Vienna and need IST colleagues present.
Vienna: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +3h 30m gap.

About CET (Central European Time)

Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.

About IST (India Standard Time)

India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.

Best time to call between Vienna and IST

Both Vienna and IST sit inside the 9 AM – 5 PM working day between 9:00 AM–1:30 PM CEST, which is 12:30 PM–5:00 PM IST. That gives roughly 4 hours and 30 minutes of shared time — the safest window for a live call or meeting.

Business hours overlap

Vienna and IST overlap for about 4 hours during the working day — enough for meetings if you avoid the edges of the window.

Vienna is 3 hours 30 minutes ahead of IST (CEST UTC+02:00 → IST UTC+05:30). The shared working window is 9:00 AM–1:30 PM CEST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Vienna

☀ Currently in DST

Standard: UTC+01:00 · DST: UTC+02:00

Clocks fall back on Sun, Oct 25, 2026

IST

Does not observe DST

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Vienna and IST?

Vienna (CEST, UTC+02:00) is 3 hours 30 minutes ahead of IST (IST, UTC+05:30). The gap is currently +3h 30m.

How do I convert Vienna time to IST time?

Add +3h 30m to Vienna local time. For example, 9:00 AM in Vienna is 12:30 PM in IST.

What time is it in IST right now?

IST uses IST at UTC+05:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h 30m offset from Vienna.

What is the best time to call IST from Vienna?

Call between 9:00 AM and 1:30 PM CEST — that maps to 12:30 PM–5:00 PM IST and keeps both parties inside the working day.

Which is ahead, Vienna or IST?

Vienna is 3 hours 30 minutes ahead of IST. When it is 12:00 PM in Vienna it is 3:30 PM in IST.

Do Vienna and IST use different time zones?

Vienna (Austria) uses CEST at UTC+02:00, while IST uses IST at UTC+05:30. The IANA identifiers are Europe/Vienna and Asia/Kolkata.

Does daylight saving time affect the Vienna–IST difference?

Yes at the moment: Vienna is on daylight saving time and IST is not, so the +3h 30m gap shifts by an hour when exactly one of them changes clocks.

Which other cities share Vienna's time zone?

CEST also covers Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw and 10 more.

Which countries use CEST, Vienna's zone?

CEST is used in Germany, France, Italy, Spain, Netherlands, Belgium, Austria, Switzerland and 19 more.

Is there a day difference between Vienna and IST?

Not normally. The +3h 30m gap only pushes the date over for late-evening times.

What is the time difference between Vienna and IST?

IST is +3h 30m from Vienna.

What timezone is Vienna in?

Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.