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).

Brazil to Vietnam

+10h

Brazil

BRTSOURCE

UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Vietnam

ICT

UTC+07:00

HH10

MM00

22:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Brazil

Vietnam

12:00 AM

10:00 AM

2:00 AM

12:00 PM

4:00 AM

2:00 PM

6:00 AM

4:00 PM

8:00 AM

6:00 PM

10:00 AM

8:00 PM

12:00 PM

10:00 PM

2:00 PM

12:00 AM+1

4:00 PM

2:00 AM+1

6:00 PM

4:00 AM+1

8:00 PM

6:00 AM+1

10:00 PM

8:00 AM+1

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

BRT and ICT on the World Map

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

BRT Zone

→

ICT 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

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

Brazil vs Vietnam: Offsets, DST and Best Call Times

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

In practice, when it is 9:00 AM in Brazil it is 7:00 PM in Vietnam. Midnight in Brazil is 10:00 AM in Vietnam. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Brazil to Vietnam time conversion table

Brazil (BRT)	Vietnam (ICT)	Day
12:00 AM	10:00 AM	same day
6:00 AM	4:00 PM	same day
7:00 AM	5:00 PM	same day
8:00 AM	6:00 PM	same day
9:00 AM	7:00 PM	same day
12:00 PM	10:00 PM	same day
3:00 PM	1:00 AM	next day
5:00 PM	3:00 AM	next day
6:00 PM	4:00 AM	next day
9:00 PM	7:00 AM	next day

Why people convert Brazil to Vietnam time

Scheduling a call from Brazil to Vietnam: a 10:00 AM start in Brazil lands at 8:00 PM in Vietnam, so you can confirm the slot without doing the arithmetic yourself.
Handling a +10h gap: Brazil and Vietnam 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 Vietnam is 7:00 PM in Brazil.
Booking travel or deliveries: tracking Vietnam local time against Brazil keeps pickup windows and arrival estimates honest across the +10h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM BRT" 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 Brazil takes the early slot, the next week Vietnam 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 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.

Best time to call between Brazil and Vietnam

With a +10h offset there is no overlap inside a normal 9 AM – 5 PM day. Vietnam opens at 9:00 AM ICT, which is 7:00 PM in Brazil, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Brazil and Vietnam have no shared working hours because of the +10h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Brazil is 10 hours ahead of Vietnam (BRT UTC-03:00 → ICT UTC+07:00). 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 Brazil and Vietnam?

Brazil (BRT, UTC-03:00) is 10 hours ahead of Vietnam (ICT, UTC+07:00). The gap is currently +10h.

How do I convert Brazil time to Vietnam time?

Add +10h to Brazil local time. For example, 9:00 AM in Brazil is 7:00 PM in Vietnam.

What time is it in Vietnam right now?

Vietnam uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +10h offset from Brazil.

What is the best time to call Vietnam from Brazil?

There is no shared working-hours window because of the +10h gap. The closest option is 1:00 PM in Brazil, which is 11:00 PM in Vietnam.

Which is ahead, Brazil or Vietnam?

Brazil is 10 hours ahead of Vietnam. When it is 12:00 PM in Brazil it is 10:00 PM in Vietnam.

Do Brazil and Vietnam use different time zones?

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