Rio Branco

America • Rio_Branco

Brazil

Current local time

23:14:30

Saturday, May 30, 2026

UTC offset

UTC-05:00

No daylight saving changes

Rio_Branco does not observe daylight saving time. Clocks stay on UTC-05:00 all year long.

Timezone details

Identifier
Abbreviation
—
Transitioned
May 30, 2021 at 08:00 PM

Location

Latitude
-9.96666
Longitude
-67.8
Country
Brazil

Acre Standard Time (AST)

FAQs

Acre Standard Time (AST) is a fixed UTC-05:00 zone used in western Brazil, with no daylight saving adjustments—making scheduling straightforward for residents and collaborators in this Amazon-region time zone.

  • Does Acre Standard Time observe daylight saving time?

    No, AST does not observe daylight saving time; it remains at UTC-05:00 year-round.

  • Which Brazilian cities use Acre Standard Time?

    The primary cities in AST are Eirunepe and Rio Branco, both located in the state of Acre in western Brazil.

  • What is the current time in Acre Standard Time?

    The current time in AST is always UTC-05:00, with no seasonal changes.

  • How does AST compare to other Brazilian time zones?

    AST is one hour behind Brasilia Time (BRT, UTC-03:00) and is used only in the far western part of Brazil.

  • Why was Acre Standard Time created?

    It reflects the geographic position of Acre state, which lies far west of the country's main population centers.

  • Is AST used outside of Brazil?

    No, AST is exclusive to Brazil, specifically in the state of Acre.

  • What countries border regions using AST?

    AST borders Peru (UTC-05:00) and Bolivia (UTC-04:00), facilitating cross-border coordination.

  • How does AST affect international business?

    Its fixed offset simplifies planning with partners in North America’s Eastern Time zone during standard time.