Los Altos to Rio de Janeiro time converter

Rio de Janeiro is 4 hours ahead of Los Altos. When it is 9:00 AM in Los Altos, it is 1:00 PM in Rio de Janeiro.

Los Altos PDT

Wednesday, October 21, 2026

Rio de Janeiro BRT

Wednesday, October 21, 2026

Los Altos
California, United States
Wed, Oct 21
PDTUTC-7
Rio de Janeiro
Brazil
Wed, Oct 21
BRTUTC-3+4h
Finding your time zone…
Shared working hours (9:00–18:00)

Los Altos to Rio de Janeiro conversion table

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

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

Best time to call or meet

Both sides are at work from 9:00 AM – 2:00 PM in Los Altos (1:00 PM – 6:00 PM in Rio de Janeiro).

Daylight saving time and the difference

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

  • Oct 21, 2026 – Nov 1, 2026: +4h
  • Nov 1, 2026 – Mar 14, 2027: +5h
  • Mar 14, 2027 – Oct 21, 2027: +4h

Distance

Los Altos and Rio de Janeiro are 10,619 km (6,598 miles) apart in a straight line.

More conversions

Rio de Janeiro to Los AltosLos Altos to New YorkLos Altos to LondonLos Altos to Los AngelesLos Altos to ChicagoLos Altos to TorontoLos Altos to São PauloLos Altos to ParisLos Altos to BerlinLos Altos to MoscowLos Altos to DubaiLos Altos to New DelhiLos Altos 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 Los Altos and Rio de Janeiro?

Rio de Janeiro is 4 hours ahead of Los Altos.

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

When it is 9:00 AM in Los Altos, it is 1:00 PM in Rio de Janeiro.

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

Both sides are at work from 9:00 AM – 2:00 PM in Los Altos (1:00 PM – 6:00 PM in Rio de Janeiro).

Does the time difference between Los Altos 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.