Helena to Rio de Janeiro time converter

Rio de Janeiro is 3 hours ahead of Helena. When it is 9:00 AM in Helena, it is 12:00 PM in Rio de Janeiro.

Helena MDT

Tuesday, October 20, 2026

Rio de Janeiro BRT

Tuesday, October 20, 2026

Helena
Montana, United States
Tue, Oct 20
MDTUTC-6
Rio de Janeiro
Brazil
Tue, Oct 20
BRTUTC-3+3h
Finding your time zone…
Shared working hours (9:00–18:00)

Helena to Rio de Janeiro conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 3:00 PM in Helena (12:00 PM – 6:00 PM in Rio de Janeiro).

Daylight saving time and the difference

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

  • Oct 20, 2026 – Nov 1, 2026: +3h
  • Nov 1, 2026 – Mar 14, 2027: +4h
  • Mar 14, 2027 – Oct 20, 2027: +3h

Distance

Helena and Rio de Janeiro are 10,354 km (6,434 miles) apart in a straight line.

More conversions

Rio de Janeiro to HelenaHelena to New YorkHelena to LondonHelena to Los AngelesHelena to ChicagoHelena to TorontoHelena to São PauloHelena to ParisHelena to BerlinHelena to MoscowHelena to DubaiHelena to New DelhiHelena to Bangkok
New York to Rio de JaneiroLondon to Rio de JaneiroLos Angeles to Rio de JaneiroChicago to Rio de JaneiroToronto to Rio de JaneiroSão Paulo to Rio de JaneiroParis to Rio de JaneiroBerlin to Rio de JaneiroMoscow to Rio de JaneiroDubai to Rio de JaneiroNew Delhi to Rio de JaneiroBangkok to Rio de Janeiro

Questions and answers

What is the time difference between Helena and Rio de Janeiro?

Rio de Janeiro is 3 hours ahead of Helena.

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

When it is 9:00 AM in Helena, it is 12:00 PM in Rio de Janeiro.

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

Both sides are at work from 9:00 AM – 3:00 PM in Helena (12:00 PM – 6:00 PM in Rio de Janeiro).

Does the time difference between Helena and Rio de Janeiro change?

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