Brazil has four time zones. They are Brasilia (UTC-3), Amazon (UTC-4), Acre (UTC-05) and Fernando de Noronha (UTC-2). Brasilia is the most populous and the official time zone of Brazil. The other three zones are in the eastern, northern, and western parts of the country, respectively.
The government of Brazil does not alter the clocks for Daylight Saving Time, meaning the same time zone is used year-round. However, since Brazil is so large, it experiences six different seasons throughout the year, meaning the amount of daylight varies by region.
In addition to the official time zones, there are also several unofficial time zones observed in some parts of the country. For example, the states of Mato Grosso, Para, and Amapa fall in the UTC-04-30 time zone.
Brazil also has a shared time zone with the Falkland Islands, which is UTC-04-00. The shared time zone is called the Saint Peter and Paul Archipelago Time Zone, in recognition of the archipelago shared between the two countries.