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).

BRT to TRT

+6h

BRT

BRTSOURCE

UTC-03:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

TRT

UTC+03:00

HH06

MM00

18:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

BRT

TRT

12:00 AM

6:00 AM

2:00 AM

8:00 AM

4:00 AM

10:00 AM

6:00 AM

12:00 PM

8:00 AM

2:00 PM

10:00 AM

4:00 PM

12:00 PM

6:00 PM

2:00 PM

8:00 PM

4:00 PM

10:00 PM

6:00 PM

12:00 AM+1

8:00 PM

2:00 AM+1

10:00 PM

4:00 AM+1

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

BRT and TRT on the World Map

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

BRT Zone

→

TRT 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

TRT – Turkey Time

UTC+03:00

Turkey Time (TRT, UTC+03:00) is the single time zone used across Turkey, fixed year round since 2016.

Countries in TRT

Turkey

Major Cities in TRT

IstanbulAnkaraIzmirBursaAntalya

Key Facts about TRT

•Turkey has used a permanent UTC+03:00 since September 2016.
•TRT is level with Moscow Standard Time and Arabia Standard Time all year.
•Because Turkey kept summer time permanently, western cities see very late winter sunrises.
•Turkey previously observed daylight saving time from 1973 to 2016.

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

Learn more about TRT on Wikipedia

Understanding the +6h Gap: BRT vs TRT

BRT runs on Brasilia Time (BRT) at UTC-03:00. TRT runs on Turkey Time (TRT) at UTC+03:00. That puts BRT 6 hours ahead of TRT — a difference of +6h at the current offsets.

In practice, when it is 9:00 AM in BRT it is 3:00 PM in TRT. Midnight in BRT is 6:00 AM in TRT. Neither zone observes daylight saving time, so the offset between them stays constant all year.

BRT to TRT time conversion table

BRT (BRT)	TRT (TRT)	Day
12:00 AM	6:00 AM	same day
6:00 AM	12:00 PM	same day
7:00 AM	1:00 PM	same day
8:00 AM	2:00 PM	same day
9:00 AM	3:00 PM	same day
12:00 PM	6:00 PM	same day
3:00 PM	9:00 PM	same day
5:00 PM	11:00 PM	same day
6:00 PM	12:00 AM	next day
9:00 PM	3:00 AM	next day

Why people convert BRT to TRT time

Scheduling a call from BRT to TRT: a 10:00 AM start in BRT lands at 4:00 PM in TRT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both BRT and TRT are inside the 9-to-5 working day between 9:00 AM and 11:00 AM BRT time (3:00 PM–5:00 PM TRT). That is roughly 2 hours of usable overlap.
Watching a live event or market open: BRT viewers need 3:00 PM in TRT to catch a 9:00 AM start there, and 6:00 PM if the event is anchored to BRT.

Always state the zone abbreviation, not just the hour. "3:00 PM BRT" is unambiguous; "3 PM" across a +6h gap is not.
Block 9:00 AM–11:00 AM BRT as the recurring meeting window if you work primarily from BRT and need TRT colleagues present.

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 TRT (Turkey Time)

Turkey Time (TRT) is fixed at UTC+03:00 all year. Turkey abolished seasonal clock changes in September 2016, moving to a permanent UTC+03:00 so the whole country stays on what was formerly summer time. That leaves Istanbul, which sits close to 29°E, on an offset well ahead of its solar time — sunrise in mid-winter comes after 08:30 local. TRT shares its offset with Moscow Standard Time, Arabia Standard Time and East Africa Time, so Istanbul is level with Moscow and Riyadh all year and one hour ahead of Central European Time during the European winter.

Best time to call between BRT and TRT

Both BRT and TRT sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM BRT, which is 3:00 PM–5:00 PM TRT. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

BRT and TRT overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.

BRT is 6 hours ahead of TRT (BRT UTC-03:00 → TRT UTC+03:00). The shared working window is 9:00 AM–11:00 AM BRT. Remember to re-check around daylight-saving transitions.