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.

São Paulo to Osaka

+12h

São Paulo

BRTSOURCE

Brazil · UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Osaka

JST

Japan · UTC+09:00

HH12

MM00

(next day)00:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

São Paulo

Osaka

12:00 AM

12:00 PM

2:00 AM

2:00 PM

4:00 AM

4:00 PM

6:00 AM

6:00 PM

8:00 AM

8:00 PM

10:00 AM

10:00 PM

12:00 PM

12:00 AM+1

2:00 PM

2:00 AM+1

4:00 PM

4:00 AM+1

6:00 PM

6:00 AM+1

8:00 PM

8:00 AM+1

10:00 PM

10:00 AM+1

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

BRT and JST on the World Map

The map below highlights the BRT (Brasilia Time) and JST (Japan Standard Time) timezone regions across the globe.

BRT Zone

→

JST Zone

Explore all world timezones interactively →

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

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 São Paulo

Wikipedia

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

Population:12.4 million

Metro:22.4 million

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

Currency:BRL (R$)

Stock Exchange:B3 (Brasil Bolsa Balcão)

Key Landmarks

Paulista AvenueIbirapuera ParkSão Paulo CathedralMASPPinacoteca

Did You Know?

The city has more helicopters than any other city in the world due to traffic congestion.

Learn more about BRT 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 →

Understanding the +12h Gap: São Paulo vs Osaka

São Paulo runs on Brasilia Standard Time (BRT) at UTC-03:00. Osaka runs on Japan Standard Time (JST) at UTC+09:00. That puts São Paulo 12 hours ahead of Osaka — a difference of +12h at the current offsets.

In practice, when it is 9:00 AM in São Paulo it is 9:00 PM in Osaka. Midnight in São Paulo is 12:00 PM in Osaka. Neither zone observes daylight saving time, so the offset between them stays constant all year.

São Paulo to Osaka time conversion table

São Paulo (BRT)	Osaka (JST)	Day
12:00 AM	12:00 PM	same day
6:00 AM	6:00 PM	same day
7:00 AM	7:00 PM	same day
8:00 AM	8:00 PM	same day
9:00 AM	9:00 PM	same day
12:00 PM	12:00 AM	next day
3:00 PM	3:00 AM	next day
5:00 PM	5:00 AM	next day
6:00 PM	6:00 AM	next day
9:00 PM	9:00 AM	next day

Why people convert São Paulo to Osaka time

Scheduling a call from São Paulo to Osaka: a 10:00 AM start in São Paulo lands at 10:00 PM in Osaka, so you can confirm the slot without doing the arithmetic yourself.
Handling a +12h gap: São Paulo and Osaka have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Osaka is 9:00 PM in São Paulo.
Coordinating a São Paulo-based team with Osaka contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.

Always state the zone abbreviation, not just the hour. "3:00 PM BRT" is unambiguous; "3 PM" across a +12h gap is not.
With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week São Paulo takes the early slot, the next week Osaka does.

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.

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 São Paulo and Osaka

With a +12h offset there is no overlap inside a normal 9 AM – 5 PM day. Osaka opens at 9:00 AM JST, which is 9:00 PM in São Paulo, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

São Paulo and Osaka have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.

São Paulo is 12 hours ahead of Osaka (BRT UTC-03:00 → JST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

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 São Paulo and Osaka?

São Paulo (BRT, UTC-03:00) is 12 hours ahead of Osaka (JST, UTC+09:00). The gap is currently +12h.

How do I convert São Paulo time to Osaka time?

Add +12h to São Paulo local time. For example, 9:00 AM in São Paulo is 9:00 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 +12h offset from São Paulo.

What is the best time to call Osaka from São Paulo?

There is no shared working-hours window because of the +12h gap. The closest option is 1:00 PM in São Paulo, which is 1:00 AM in Osaka.

Which is ahead, São Paulo or Osaka?

São Paulo is 12 hours ahead of Osaka. When it is 12:00 PM in São Paulo it is 12:00 AM in Osaka.

Do São Paulo and Osaka use different time zones?

São Paulo (Brazil) uses BRT at UTC-03:00, while Osaka (Japan) uses JST at UTC+09:00. The IANA identifiers are America/Sao_Paulo and Asia/Tokyo.

Does daylight saving time affect the São Paulo–Osaka difference?

Neither zone observes daylight saving time, so the +12h offset between São Paulo and Osaka is fixed all year.

Which other cities share São Paulo's time zone?

BRT also covers São Paulo, Rio de Janeiro, Brasília, Belo Horizonte, Salvador, Fortaleza, Recife, Curitiba.

Which countries use BRT, São Paulo's zone?

BRT is used in Brazil (eastern).

Is there a day difference between São Paulo and Osaka?

Sometimes. The +12h gap is large enough that 8:00 PM or later in São Paulo already falls on the next day in Osaka.

What is the time difference between São Paulo and Osaka?

Osaka is +12h from São Paulo.

What timezone is São Paulo in?

São Paulo operates on Brasília Time (BRT), UTC-3. As South America's largest financial center, São Paulo's B3 exchange is the Americas' second-largest.

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 São Paulo?

Standard business hours in São Paulo are 9:00 AM - 6:00 PM BRT.

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 São Paulo and Osaka?

The best overlap for a call is when both cities are in business hours. São Paulo works 9:00 AM - 6:00 PM BRT and Osaka works 9:00 AM - 6:00 PM JST (+12h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in São Paulo and Osaka?

São Paulo uses BRL (R$) while Osaka uses JPY (¥). Check current exchange rates when planning travel or business between these cities.

How do São Paulo and Osaka compare in size?

São Paulo has a population of approximately 12.4 million (metro: 22.4 million), while Osaka has approximately 2.8 million (metro: 19 million).

What are the major landmarks in São Paulo and Osaka?

São Paulo is known for Paulista Avenue, Ibirapuera Park, São Paulo Cathedral. Osaka is famous for Osaka Castle, Dotonbori, Universal Studios Japan.

Do São Paulo and Osaka have stock exchanges?

Yes. São Paulo has the B3 (Brasil Bolsa Balcão) and Osaka has the OSE (Osaka Exchange - derivatives). The +12h time difference affects trading hour overlaps between these exchanges.