Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

Vienna to Osaka

+7h

Vienna

CESTSOURCE

Austria · UTC+02:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Osaka

JST

Japan · UTC+09:00

HH07

MM00

19:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vienna

Osaka

12:00 AM

7:00 AM

2:00 AM

9:00 AM

4:00 AM

11:00 AM

6:00 AM

1:00 PM

8:00 AM

3:00 PM

10:00 AM

5:00 PM

12:00 PM

7:00 PM

2:00 PM

9:00 PM

4:00 PM

11:00 PM

6:00 PM

1:00 AM+1

8:00 PM

3:00 AM+1

10:00 PM

5:00 AM+1

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

CEST and JST on the World Map

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

CEST Zone

→

JST 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

JST – Japan Standard Time

UTC+09:00

Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.

Countries in JST

Japan

Major Cities in JST

TokyoOsakaYokohamaNagoyaSapporoKyotoKobeFukuokaHiroshima

Key Facts about JST

•Japan does not observe daylight saving time.
•Tokyo is the most populous metropolitan area in the world.
•The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
•JST is 14 hours ahead of EST and 9 hours ahead of GMT.

Daylight Saving:No – UTC+09:00 year-round

Learn more about JST 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 →

About Osaka

Wikipedia

Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.

Population:2.8 million

Metro:19 million

Business Hours:9:00 AM - 6:00 PM JST

Currency:JPY (¥)

Stock Exchange:OSE (Osaka Exchange - derivatives)

Key Landmarks

Osaka CastleDotonboriUniversal Studios JapanShitennoji TempleUmeda Sky Building

Did You Know?

Osaka Castle was originally built in 1583 and has been rebuilt several times.

Learn more about JST timezone →

Vienna vs Osaka: Offsets, DST and Best Call Times

Vienna runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. Osaka runs on Japan Standard Time (JST) at UTC+09:00. That puts Vienna 7 hours ahead of Osaka — a difference of +7h at the current offsets.

In practice, when it is 9:00 AM in Vienna it is 4:00 PM in Osaka. Midnight in Vienna is 7:00 AM in Osaka.Vienna observes daylight saving time while Osaka does not, so the gap narrows or widens by an hour part of the year.

Vienna to Osaka time conversion table

Vienna (CEST)	Osaka (JST)	Day
12:00 AM	7:00 AM	same day
6:00 AM	1:00 PM	same day
7:00 AM	2:00 PM	same day
8:00 AM	3:00 PM	same day
9:00 AM	4:00 PM	same day
12:00 PM	7:00 PM	same day
3:00 PM	10:00 PM	same day
5:00 PM	12:00 AM	next day
6:00 PM	1:00 AM	next day
9:00 PM	4:00 AM	next day

Why people convert Vienna to Osaka time

Scheduling a call from Vienna to Osaka: a 10:00 AM start in Vienna lands at 5:00 PM in Osaka, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Vienna and Osaka are inside the 9-to-5 working day between 9:00 AM and 10:00 AM CEST time (4:00 PM–5:00 PM JST). That is roughly 1 hours of usable overlap.
Keeping family and friends in sync: knowing that 8:00 PM in Vienna is 3:00 AM in Osaka makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM CEST" is unambiguous; "3 PM" across a +7h gap is not.
Block 9:00 AM–10:00 AM CEST as the recurring meeting window if you work primarily from Vienna and need Osaka 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 +7h 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 JST (Japan Standard Time)

Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.

Best time to call between Vienna and Osaka

Both Vienna and Osaka sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM CEST, which is 4:00 PM–5:00 PM JST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Vienna and Osaka overlap for only 60 minutes (9:00 AM–10:00 AM CEST), so meetings have to be booked precisely.

Vienna is 7 hours ahead of Osaka (CEST UTC+02:00 → JST UTC+09:00). The shared working window is 9:00 AM–10:00 AM 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

Osaka

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 Osaka?

Vienna (CEST, UTC+02:00) is 7 hours ahead of Osaka (JST, UTC+09:00). The gap is currently +7h.

How do I convert Vienna time to Osaka time?

Add +7h to Vienna local time. For example, 9:00 AM in Vienna is 4:00 PM in Osaka.

What time is it in Osaka right now?

Osaka uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from Vienna.

What is the best time to call Osaka from Vienna?

Call between 9:00 AM and 10:00 AM CEST — that maps to 4:00 PM–5:00 PM JST and keeps both parties inside the working day.

Which is ahead, Vienna or Osaka?

Vienna is 7 hours ahead of Osaka. When it is 12:00 PM in Vienna it is 7:00 PM in Osaka.

Do Vienna and Osaka use different time zones?

Vienna (Austria) uses CEST at UTC+02:00, while Osaka (Japan) uses JST at UTC+09:00. The IANA identifiers are Europe/Vienna and Asia/Tokyo.

Does daylight saving time affect the Vienna–Osaka difference?

Yes at the moment: Vienna is on daylight saving time and Osaka is not, so the +7h 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 Osaka?

Not normally. The +7h gap only pushes the date over for late-evening times.

What is the time difference between Vienna and Osaka?

Osaka is +7h 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.

What timezone is Osaka in?

Osaka operates on Japan Standard Time (JST), UTC+9. As Japan's second economic center and a manufacturing hub, Osaka shares business hours with Tokyo.

What are the business hours in Vienna?

Standard business hours in Vienna are 8:00 AM - 5:00 PM CET.

What are the business hours in Osaka?

Standard business hours in Osaka are 9:00 AM - 6:00 PM JST.

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

The best overlap for a call is when both cities are in business hours. Vienna works 8:00 AM - 5:00 PM CET and Osaka works 9:00 AM - 6:00 PM JST (+7h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Vienna and Osaka?

Vienna uses EUR (€) while Osaka uses JPY (¥). Check current exchange rates when planning travel or business between these cities.

How do Vienna and Osaka compare in size?

Vienna has a population of approximately 1.9 million (metro: 2.9 million), while Osaka has approximately 2.8 million (metro: 19 million).

What are the major landmarks in Vienna and Osaka?

Vienna is known for Schönbrunn Palace, St. Stephen's Cathedral, Belvedere Palace. Osaka is famous for Osaka Castle, Dotonbori, Universal Studios Japan.

Do Vienna and Osaka have stock exchanges?

Yes. Vienna has the Wiener Börse and Osaka has the OSE (Osaka Exchange - derivatives). The +7h time difference affects trading hour overlaps between these exchanges.