The state of Acre in Brazil will change its time zone

Senator Jorge Viana announced that the Brazilian state of Acre will change its time zone on 10 November 2013: from UTC-4 to UTC-5.^[1]

Brasília, the capital of Brazil, is on UTC-3, so after the change Acre will be two hours behind the capital instead of one.

Acre does not use daylight saving time (DST), but Brasília does, so during summer time the difference will be three hours.

Brazil's Senate has passed the bill, which also covers some of the westernmost municipalities of Amazonas. It still needs the President's approval.

Daylight saving time

Brazil moved to daylight saving time at midnight between Saturday 19 and Sunday 20 October 2013, when clocks went forward one hour to 01:00.^[1] Many states in Brazil do not use daylight saving time, but the central and southern parts do.

Update, 26 October 2026: The change happened as planned: the law was signed on 30 October 2013, and Acre moved back to UTC-5 on 10 November 2013.^[1][2] Acre had moved to UTC-4 only in 2008, and its voters chose to go back in a 2010 referendum.^[3] Brazil abolished summer time in 2019, so Acre is now two hours behind Brasília all year.^[4]