BRT to COT
-2hBRT
BRTSOURCECOT
COTGreen rows indicate typical business hours (9 AM - 5 PM)
BRT and COT on the World Map
The map below highlights the BRT (Brasilia Time) and COT (Colombia Time) timezone regions across the globe.
BRT – Brasilia Time
UTC-03:00Brasilia Time (BRT) is the time zone for eastern Brazil, 3 hours behind UTC.
- •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.
COT – Colombia Time
UTC-05:00Colombia Time (COT) is the standard time for Colombia, 5 hours behind UTC.
- •Colombia does not observe daylight saving time.
- •COT is the same offset as EST (UTC-05:00).
- •Bogotá sits at 2,640m elevation, making it one of the highest capital cities.
Understanding the -2h Gap: BRT vs COT
BRT runs on Brasilia Time (BRT) at UTC-03:00. COT runs on Colombia Time (COT) at UTC-05:00. That puts BRT 2 hours behind COT — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in BRT it is 7:00 AM in COT. Midnight in BRT is 10:00 PM in COT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BRT to COT time conversion table
| BRT (BRT) | COT (COT) | Day |
|---|---|---|
| 12:00 AM | 10:00 PM | previous day |
| 6:00 AM | 4:00 AM | same day |
| 7:00 AM | 5:00 AM | same day |
| 8:00 AM | 6:00 AM | same day |
| 9:00 AM | 7:00 AM | same day |
| 12:00 PM | 10:00 AM | same day |
| 3:00 PM | 1:00 PM | same day |
| 5:00 PM | 3:00 PM | same day |
| 6:00 PM | 4:00 PM | same day |
| 9:00 PM | 7:00 PM | same day |
Why people convert BRT to COT time
- Scheduling a call from BRT to COT: a 10:00 AM start in BRT lands at 8:00 AM in COT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BRT and COT are inside the 9-to-5 working day between 11:00 AM and 5:00 PM BRT time (9:00 AM–3:00 PM COT). That is roughly 6 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in BRT is 6:00 PM in COT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BRT" is unambiguous; "3 PM" across a -2h gap is not.
- Block 11:00 AM–5:00 PM BRT as the recurring meeting window if you work primarily from BRT and need COT 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 COT (Colombia Time)
Colombia Time (COT) is used throughout Colombia. Colombia does not observe daylight saving time. COT shares the same offset as EST (UTC-05:00). Bogotá, the capital, is one of the largest cities in South America.
Best time to call between BRT and COT
Both BRT and COT sit inside the 9 AM – 5 PM working day between 11:00 AM–5:00 PM BRT, which is 9:00 AM–3:00 PM COT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
BRT and COT share 6 hours of working-hours overlap (11:00 AM–5:00 PM BRT), so scheduling a live meeting is straightforward.
BRT is 2 hours behind COT (BRT UTC-03:00 → COT UTC-05:00). The shared working window is 11:00 AM–5:00 PM BRT. 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:
Frequently Asked Questions
What is the time difference between BRT and COT?
BRT (BRT, UTC-03:00) is 2 hours behind COT (COT, UTC-05:00). The gap is currently -2h.
How do I convert BRT time to COT time?
Add -2h to BRT local time. For example, 9:00 AM in BRT is 7:00 AM in COT.
What time is it in COT right now?
COT uses COT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h offset from BRT.
What is the best time to call COT from BRT?
Call between 11:00 AM and 5:00 PM BRT — that maps to 9:00 AM–3:00 PM COT and keeps both parties inside the working day.
Which is behind, BRT or COT?
BRT is 2 hours behind COT. When it is 12:00 PM in BRT it is 10:00 AM in COT.
Does daylight saving time affect the BRT–COT difference?
Neither zone observes daylight saving time, so the -2h offset between BRT and COT is fixed all year.
Which other cities share BRT's time zone?
BRT also covers São Paulo, Rio de Janeiro, Brasília, Belo Horizonte, Salvador, Fortaleza, Recife, Curitiba.
Which countries use BRT, BRT's zone?
BRT is used in Brazil (eastern).
Is there a day difference between BRT and COT?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between BRT and COT?
COT is -2h from BRT.
What timezone is BRT in?
BRT operates on its local timezone.
What timezone is COT in?
COT operates on its local timezone.
Which countries use BRT (Brasilia Time)?
BRT is used in Brazil (eastern).
Does BRT observe daylight saving time?
No, BRT does not observe daylight saving time and remains at UTC-03:00 year-round.
What are some interesting facts about BRT?
Brazil abolished daylight saving time in 2019. São Paulo is the largest city in the Southern Hemisphere.
Which cities are in the COT timezone?
Major cities in the COT timezone include Bogotá, Medellín, Cali, Barranquilla, Cartagena.
What is the UTC offset for COT?
Colombia Time (COT) is at UTC-05:00.
What should I know about the COT timezone?
Colombia does not observe daylight saving time. COT is the same offset as EST (UTC-05:00).
When is it midnight in BRT, what time is it in COT?
When it is 12:00 AM (midnight) in BRT (BRT), it is -2h later in COT (COT).
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See every conversion from BRT →·See every conversion from COT →