Time in Brazil

The main time zone of Brazil comprises the states in the South, Southeast and Northeast regions (except the small islands mentioned above), plus the states of Goiás, Tocantins, Pará and Amapá, and the Federal District, which includes the national capital city, Brasília.

[a] These areas cover only about 4% of the Brazilian territory (although that is still about the size of Germany) and have only about 0.5% of the country's population (little more than one million people).

[7] However, in a non-binding referendum held on 31 October 2010, a slight majority of Acre voters voted in favour of returning the state to UTC−05:00.

[8] On 30 October 2013, Brazilian President Dilma Rousseff enacted Law 12876, establishing that the time zone switch would occur on Sunday, 10 November 2013.

Unofficially, 32 municipalities in eastern Mato Grosso,[b] located in the Araguaia valley, observe UTC−03:00, Brasília time.

[15] The most recent DST rule specified advancing the time by one hour during the period from 00:00 on the first Sunday in November to 00:00 on the third Sunday in February (postponed by one week if the latter fell on carnival), applicable only to the South, Southeast and Central-West regions,[15] which comprise about 65% of the Brazilian population.