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 BRT

-5h

Vienna

CESTSOURCE

Austria · UTC+02:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

BRT

UTC-03:00

HH07

MM00

07:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Vienna

BRT

12:00 AM

7:00 PM-1

2:00 AM

9:00 PM-1

4:00 AM

11:00 PM-1

6:00 AM

1:00 AM

8:00 AM

3:00 AM

10:00 AM

5:00 AM

12:00 PM

7:00 AM

2:00 PM

9:00 AM

4:00 PM

11:00 AM

6:00 PM

1:00 PM

8:00 PM

3:00 PM

10:00 PM

5:00 PM

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

CEST and BRT on the World Map

The map below highlights the CEST (Central European Time) and BRT (Brasilia Time) timezone regions across the globe.

CEST Zone

→

BRT 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

BRT – Brasilia Time

UTC-03:00

Brasilia Time (BRT) is the time zone for eastern Brazil, 3 hours behind UTC.

Countries in BRT

Brazil (eastern)

Major Cities in BRT

São PauloRio de JaneiroBrasíliaBelo HorizonteSalvadorFortalezaRecifeCuritiba

Key Facts about BRT

•Brazil abolished daylight saving time in 2019.
•São Paulo is the largest city in the Southern Hemisphere.
•BRT is 2 hours ahead of EST.
•Brazil spans four different time zones.
•The B3 stock exchange in São Paulo operates on BRT.

Daylight Saving:No – UTC-03:00 year-round

Learn more about BRT 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 →

Everything You Need to Know About Vienna and BRT Time

Vienna runs on Central European Summer Time (CEST) at UTC+02:00, currently observing daylight saving time. BRT runs on Brasilia Time (BRT) at UTC-03:00. That puts Vienna 5 hours behind BRT — a difference of -5h at the current offsets.

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

Vienna to BRT time conversion table

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

Why people convert Vienna to BRT time

Scheduling a call from Vienna to BRT: a 10:00 AM start in Vienna lands at 5:00 AM in BRT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both Vienna and BRT are inside the 9-to-5 working day between 2:00 PM and 5:00 PM CEST time (9:00 AM–12:00 PM BRT). That is roughly 3 hours of usable overlap.
Watching a live event or market open: Vienna viewers need 4:00 AM in BRT to catch a 9:00 AM start there, and 5:00 AM if the event is anchored to Vienna.

Always state the zone abbreviation, not just the hour. "3:00 PM CEST" is unambiguous; "3 PM" across a -5h gap is not.
Block 2:00 PM–5:00 PM CEST as the recurring meeting window if you work primarily from Vienna and need BRT 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 -5h 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 BRT (Brasilia Time)

Brasilia Time (BRT) is the standard time in the most populous regions of Brazil, including São Paulo, Rio de Janeiro, and the capital Brasília. Brazil abolished daylight saving time in 2019, so BRT is now observed year-round in these regions. Brazil spans four time zones in total.

Best time to call between Vienna and BRT

Both Vienna and BRT sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM CEST, which is 9:00 AM–12:00 PM BRT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

Vienna and BRT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.

Vienna is 5 hours behind BRT (CEST UTC+02:00 → BRT UTC-03:00). The shared working window is 2:00 PM–5:00 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

BRT

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 BRT?

Vienna (CEST, UTC+02:00) is 5 hours behind BRT (BRT, UTC-03:00). The gap is currently -5h.

How do I convert Vienna time to BRT time?

Add -5h to Vienna local time. For example, 9:00 AM in Vienna is 4:00 AM in BRT.

What time is it in BRT right now?

BRT uses BRT at UTC-03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from Vienna.

What is the best time to call BRT from Vienna?

Call between 2:00 PM and 5:00 PM CEST — that maps to 9:00 AM–12:00 PM BRT and keeps both parties inside the working day.

Which is behind, Vienna or BRT?

Vienna is 5 hours behind BRT. When it is 12:00 PM in Vienna it is 7:00 AM in BRT.

Do Vienna and BRT use different time zones?

Vienna (Austria) uses CEST at UTC+02:00, while BRT uses BRT at UTC-03:00. The IANA identifiers are Europe/Vienna and America/Sao_Paulo.

Does daylight saving time affect the Vienna–BRT difference?

Yes at the moment: Vienna is on daylight saving time and BRT is not, so the -5h 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 BRT?

Not normally. The -5h gap only pushes the date over the previous day.

What is the time difference between Vienna and BRT?

BRT is -5h 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.