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.

ICT to São Paulo

-10h

ICT

ICTSOURCE

UTC+07:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

São Paulo

BRT

Brazil · UTC-03:00

HH02

MM00

02:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

ICT

São Paulo

12:00 AM

2:00 PM-1

2:00 AM

4:00 PM-1

4:00 AM

6:00 PM-1

6:00 AM

8:00 PM-1

8:00 AM

10:00 PM-1

10:00 AM

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

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

ICT and BRT on the World Map

The map below highlights the ICT (Indochina Time) and BRT (Brasilia Time) timezone regions across the globe.

ICT Zone

→

BRT Zone

Explore all world timezones interactively →

ICT – Indochina Time

UTC+07:00

Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.

Countries in ICT

ThailandVietnamCambodiaLaosIndonesia (WIB)

Major Cities in ICT

BangkokHo Chi Minh CityHanoiJakartaPhnom PenhVientiane

Key Facts about ICT

•Bangkok is one of the most visited cities in the world.
•ICT is 12 hours ahead of EST.
•Thailand, Vietnam, and Cambodia all share ICT.

Daylight Saving:No – UTC+07:00 year-round

Learn more about ICT 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 →

Everything You Need to Know About ICT and São Paulo Time

ICT runs on Indochina Time (ICT) at UTC+07:00. São Paulo runs on Brasilia Standard Time (BRT) at UTC-03:00. That puts ICT 10 hours behind São Paulo — a difference of -10h at the current offsets.

In practice, when it is 9:00 AM in ICT it is 11:00 PM in São Paulo on the previous day. Midnight in ICT is 2:00 PM in São Paulo. Neither zone observes daylight saving time, so the offset between them stays constant all year.

ICT to São Paulo time conversion table

ICT (ICT)	São Paulo (BRT)	Day
12:00 AM	2:00 PM	previous day
6:00 AM	8:00 PM	previous day
7:00 AM	9:00 PM	previous day
8:00 AM	10:00 PM	previous day
9:00 AM	11:00 PM	previous day
12:00 PM	2:00 AM	same day
3:00 PM	5:00 AM	same day
5:00 PM	7:00 AM	same day
6:00 PM	8:00 AM	same day
9:00 PM	11:00 AM	same day

Why people convert ICT to São Paulo time

Scheduling a call from ICT to São Paulo: a 10:00 AM start in ICT lands at 12:00 AM in São Paulo, so you can confirm the slot without doing the arithmetic yourself.
Handling a -10h gap: ICT 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 11:00 PM in ICT.
Booking travel or deliveries: tracking São Paulo local time against ICT keeps pickup windows and arrival estimates honest across the -10h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM ICT" is unambiguous; "3 PM" across a -10h gap is not.
With a -10h gap there is no shared 9-to-5 window, so alternate the early start: one week ICT takes the early slot, the next week São Paulo does.

About ICT (Indochina Time)

Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.

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 ICT and São Paulo

With a -10h offset there is no overlap inside a normal 9 AM – 5 PM day. São Paulo opens at 9:00 AM BRT, which is 11:00 PM in ICT, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

ICT and São Paulo have no shared working hours because of the -10h gap. Teams need to alternate early starts or rely on asynchronous handovers.

ICT is 10 hours behind São Paulo (ICT UTC+07:00 → 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 ICT and São Paulo?

ICT (ICT, UTC+07:00) is 10 hours behind São Paulo (BRT, UTC-03:00). The gap is currently -10h.

How do I convert ICT time to São Paulo time?

Add -10h to ICT local time. For example, 9:00 AM in ICT is 11:00 PM in São Paulo (previous day).

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 -10h offset from ICT.

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

There is no shared working-hours window because of the -10h gap. The closest option is 1:00 PM in ICT, which is 3:00 AM in São Paulo.

Which is behind, ICT or São Paulo?

ICT is 10 hours behind São Paulo. When it is 12:00 PM in ICT it is 2:00 AM in São Paulo.

Do ICT and São Paulo use different time zones?

ICT uses ICT at UTC+07:00, while São Paulo (Brazil) uses BRT at UTC-03:00. The IANA identifiers are Asia/Bangkok and America/Sao_Paulo.

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

Neither zone observes daylight saving time, so the -10h offset between ICT and São Paulo is fixed all year.

Which other cities share ICT's time zone?

ICT also covers Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.

Which countries use ICT, ICT's zone?

ICT is used in Thailand, Vietnam, Cambodia, Laos, Indonesia (WIB).

Is there a day difference between ICT and São Paulo?

Not normally. The -10h gap only pushes the date over the previous day.

What is the time difference between ICT and São Paulo?

São Paulo is -10h from ICT.

What timezone is ICT in?

ICT 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.