Multiple Global Meanings for ACT
The abbreviation ACT has multiple official meanings across different continents and legal jurisdictions. Below are all recognized global definitions:
Region: State of Acre, Southwestern Amazonas (Atalaia do Norte, Benjamin Constant, Eirunepé, Envira, Guajará, Ipixuna, Tabatinga)
Daylight Saving: No daylight saving shift
Technical Specifications & Standards
Official chronometric properties, ISO standards, and international database registry identifiers for Acre Time:
Daylight Saving Time (DST) Transitions
⬆️ Spring Forward (Clocks Advance)
None
⬇️ Fall Back (Clocks Return)
None
Observing Jurisdictions & Subdivisions
1 Sovereign NationsSovereign nations, administrative subdivisions, and regional territories officially operating under ACT:
Regional Subdivisions & Territory Details
Financial Markets & Trading Hours
Coordinates western Amazonian rubber, Brazil nut, and border commerce along the Peruvian and Bolivian frontiers.
Local Hours: 08:00 - 16:30 ACT
UTC Window: 13:00 - 21:30 UTC
Major Cities in ACT
Primary metropolitan centers and financial hubs observing this time zone:
Adoption History & Astronomical Facts
Year Established: 2013
Acre observed UTC-5 from 1913 until 2008, when federal legislation moved the state to UTC-4. In a 2010 public referendum, over 57 percent of voters demanded the return of UTC-5. Brazilian Congress restored UTC-5 on November 10, 2013.
ACT is also an abbreviation for Australian Central Time (UTC+9:30). In South America, Acre Time operates on the exact same UTC offset as New York (EST, UTC-5).
Frequently Asked Questions about ACT
What is Acre Time?
Acre Time (ACT) is UTC-5, observed in the Brazilian state of Acre and western Amazonas.
What is the time difference between Acre and Brasília?
Acre is 2 hours behind Brasília and Rio de Janeiro (BRT, UTC-3).
Why did Acre change its time zone in 2013?
Following a 2010 referendum where citizens voted to reject UTC-4, federal law officially restored UTC-5 on November 10, 2013.