Rio de Janeiro to Mountain Brook time converter

Mountain Brook is 2 hours behind Rio de Janeiro. When it is 9:00 AM in Rio de Janeiro, it is 7:00 AM in Mountain Brook.

Rio de Janeiro BRT

Tuesday, October 20, 2026

Mountain Brook CDT

Tuesday, October 20, 2026

Rio de Janeiro
Brazil
Tue, Oct 20
BRTUTC-3
Mountain Brook
Alabama, United States
Tue, Oct 20
CDTUTC-5-2h
Finding your time zone…
Shared working hours (9:00–18:00)

Rio de Janeiro to Mountain Brook conversion table

Every hour of today in Rio de Janeiro and the matching time in Mountain Brook. Light rows are typical working hours (9:00–18:00).

Rio de JaneiroMountain Brook
12:00 AM10:00 PM−1 day
1:00 AM11:00 PM−1 day
2:00 AM12:00 AM
3:00 AM1:00 AM
4:00 AM2:00 AM
5:00 AM3:00 AM
6:00 AM4:00 AM
7:00 AM5:00 AM
8:00 AM6:00 AM
9:00 AM7:00 AM
10:00 AM8:00 AM
11:00 AM9:00 AM
12:00 PM10:00 AM
1:00 PM11:00 AM
2:00 PM12:00 PM
3:00 PM1:00 PM
4:00 PM2:00 PM
5:00 PM3:00 PM
6:00 PM4:00 PM
7:00 PM5:00 PM
8:00 PM6:00 PM
9:00 PM7:00 PM
10:00 PM8:00 PM
11:00 PM9:00 PM

Best time to call or meet

Both sides are at work from 11:00 AM – 6:00 PM in Rio de Janeiro (9:00 AM – 4:00 PM in Mountain Brook).

Daylight saving time and the difference

The difference changes during the year because Rio de Janeiro and Mountain Brook switch clocks on different dates:

  • Oct 20, 2026 – Nov 1, 2026: -2h
  • Nov 1, 2026 – Mar 14, 2027: -3h
  • Mar 14, 2027 – Oct 20, 2027: -2h

Distance

Rio de Janeiro and Mountain Brook are 7,786 km (4,838 miles) apart in a straight line.

More conversions

Mountain Brook to Rio de JaneiroRio de Janeiro to New YorkRio de Janeiro to LondonRio de Janeiro to Los AngelesRio de Janeiro to ChicagoRio de Janeiro to TorontoRio de Janeiro to São PauloRio de Janeiro to ParisRio de Janeiro to BerlinRio de Janeiro to MoscowRio de Janeiro to DubaiRio de Janeiro to New DelhiRio de Janeiro to Bangkok
New York to Mountain BrookLondon to Mountain BrookLos Angeles to Mountain BrookChicago to Mountain BrookToronto to Mountain BrookSão Paulo to Mountain BrookParis to Mountain BrookBerlin to Mountain BrookMoscow to Mountain BrookDubai to Mountain BrookNew Delhi to Mountain BrookBangkok to Mountain Brook

Questions and answers

What is the time difference between Rio de Janeiro and Mountain Brook?

Mountain Brook is 2 hours behind Rio de Janeiro.

What time is it in Mountain Brook when it is 9 AM in Rio de Janeiro?

When it is 9:00 AM in Rio de Janeiro, it is 7:00 AM in Mountain Brook.

When is the best time to call Mountain Brook from Rio de Janeiro?

Both sides are at work from 11:00 AM – 6:00 PM in Rio de Janeiro (9:00 AM – 4:00 PM in Mountain Brook).

Does the time difference between Rio de Janeiro and Mountain Brook change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.