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.

IST to São Paulo

-8h 30m

IST

ISTSOURCE

UTC+05:30

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

São Paulo

BRT

Brazil · UTC-03:00

HH03

MM30

03:30 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

IST

São Paulo

12:00 AM

3:30 PM-1

2:00 AM

5:30 PM-1

4:00 AM

7:30 PM-1

6:00 AM

9:30 PM-1

8:00 AM

11:30 PM-1

10:00 AM

1:30 AM

12:00 PM

3:30 AM

2:00 PM

5:30 AM

4:00 PM

7:30 AM

6:00 PM

9:30 AM

8:00 PM

11:30 AM

10:00 PM

1:30 PM

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

IST and BRT on the World Map

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

IST Zone

→

BRT Zone

Explore all world timezones interactively →

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

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 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 →

IST to São Paulo Time Difference – Complete Guide

IST runs on India Standard Time (IST) at UTC+05:30. São Paulo runs on Brasilia Standard Time (BRT) at UTC-03:00. That puts IST 8 hours 30 minutes behind São Paulo — a difference of -8h 30m at the current offsets.

In practice, when it is 9:00 AM in IST it is 12:30 AM in São Paulo. Midnight in IST is 3:30 PM in São Paulo. Neither zone observes daylight saving time, so the offset between them stays constant all year.

IST to São Paulo time conversion table

IST (IST)	São Paulo (BRT)	Day
12:00 AM	3:30 PM	previous day
6:00 AM	9:30 PM	previous day
7:00 AM	10:30 PM	previous day
8:00 AM	11:30 PM	previous day
9:00 AM	12:30 AM	same day
12:00 PM	3:30 AM	same day
3:00 PM	6:30 AM	same day
5:00 PM	8:30 AM	same day
6:00 PM	9:30 AM	same day
9:00 PM	12:30 PM	same day

Why people convert IST to São Paulo time

Scheduling a call from IST to São Paulo: a 10:00 AM start in IST lands at 1:30 AM in São Paulo, so you can confirm the slot without doing the arithmetic yourself.
Handling a -8h 30m gap: IST and São Paulo 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 São Paulo is 12:30 AM in IST.
Booking travel or deliveries: tracking São Paulo local time against IST keeps pickup windows and arrival estimates honest across the -8h 30m offset.

Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -8h 30m gap is not.
With a -8h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week IST takes the early slot, the next week São Paulo does.

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.

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 IST and São Paulo

With a -8h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. São Paulo opens at 9:00 AM BRT, which is 12:30 AM in IST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

IST and São Paulo have no shared working hours because of the -8h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.

IST is 8 hours 30 minutes behind São Paulo (IST UTC+05:30 → BRT UTC-03:00). 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 IST and São Paulo?

IST (IST, UTC+05:30) is 8 hours 30 minutes behind São Paulo (BRT, UTC-03:00). The gap is currently -8h 30m.

How do I convert IST time to São Paulo time?

Add -8h 30m to IST local time. For example, 9:00 AM in IST is 12:30 AM in São Paulo.

What time is it in São Paulo right now?

São Paulo 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 -8h 30m offset from IST.

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

There is no shared working-hours window because of the -8h 30m gap. The closest option is 1:00 PM in IST, which is 4:30 AM in São Paulo.

Which is behind, IST or São Paulo?

IST is 8 hours 30 minutes behind São Paulo. When it is 12:00 PM in IST it is 3:30 AM in São Paulo.

Do IST and São Paulo use different time zones?

IST uses IST at UTC+05:30, while São Paulo (Brazil) uses BRT at UTC-03:00. The IANA identifiers are Asia/Kolkata and America/Sao_Paulo.

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

Neither zone observes daylight saving time, so the -8h 30m offset between IST and São Paulo is fixed all year.

Which other cities share IST's time zone?

IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.

Which countries use IST, IST's zone?

IST is used in India, Sri Lanka.

Is there a day difference between IST and São Paulo?

Not normally. The -8h 30m gap only pushes the date over the previous day.

What is the time difference between IST and São Paulo?

São Paulo is -8h 30m from IST.

What timezone is IST in?

IST operates on its local timezone.

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.