Current Time in America/Boa_Vista Time Zone

Geographic Coverage and Usage

America/Boa_Vista applies to the entire state of Roraima in Brazil, including its capital Boa Vista and other municipalities such as Caracaraí, Mucajaí, and Alto Alegre. This zone is also used in the Brazilian states of Amazonas (except the westernmost region which uses America/Eirunepe) and Rondônia, as well as parts of Mato Grosso and Mato Grosso do Sul. However, the primary anchor city is Boa Vista, located near the border with Venezuela and Guyana. The zone is exclusively used within Brazil; no other country employs this specific IANA identifier.

Offset and Abbreviation

The standard offset for America/Boa_Vista is UTC-04:00, meaning local time is four hours behind Coordinated Universal Time. This offset is commonly referred to as Amazon Time (AMT), though the abbreviation may also be used for other zones at the same offset. Unlike some regions that use UTC-04:00 with daylight saving, America/Boa_Vista remains constant throughout the year, so the abbreviation does not change between seasons.

Daylight Saving Time: None

Brazil previously observed daylight saving time in parts of the country, but as of 2019, the practice was abolished nationwide. America/Boa_Vista has not observed DST for many years, and its offset remains fixed at UTC-04:00 all year. This means there is no spring-forward or fall-back event, and the local time does not shift relative to other time zones that observe DST. For scheduling, this stability simplifies recurring meetings, as the time difference with zones that do change (e.g., America/New_York) will vary between standard and daylight periods.

Countries and Cities

The only country using America/Boa_Vista is Brazil. Key cities within this zone include Boa Vista (population approx. 400,000), Manaus (the largest city in the Amazon, though it falls under America/Manaus which is also UTC-04:00 but has a different IANA entry), Porto Velho (Rondônia), and Rio Branco (Acre, which uses America/Rio_Branco at UTC-05:00). Other IANA zones at the same standard offset of UTC-04:00 include America/Anguilla, America/Antigua, America/Aruba, America/Barbados, America/Blanc-Sablon, America/Campo_Grande, America/Caracas, America/Cuiaba, America/Curacao, America/Dominica, America/Glace_Bay, and America/Goose_Bay. However, some of these zones may observe daylight saving time (e.g., America/Glace_Bay follows DST as part of Canada), while others like America/Caracas use a different offset (UTC-04:00 but with historical changes).

Practical Guidance for Scheduling

When scheduling calls or meetings with locations in America/Boa_Vista, keep in mind the fixed UTC-04:00 offset. For example, when it is noon in Boa Vista (UTC-04:00), it is 16:00 UTC, 11:00 in New York (EST, UTC-05:00) during standard time, but 12:00 in New York during daylight time (EDT, UTC-04:00). So the time difference with New York is 1 hour during EST and 0 hours during EDT. With London (UTC+00:00), Boa Vista is 4 hours behind year-round, so noon in Boa Vista is 16:00 in London. For Tokyo (UTC+09:00), the difference is 13 hours (Boa Vista is behind). Always confirm the current offset of the other party, especially if they observe DST.

Business Hours Overlap

Typical business hours in Boa Vista (9:00-17:00 local) overlap well with North American Eastern Time during standard time (10:00-18:00 ET) but shift during DST. For Europe, the overlap is limited: noon in Boa Vista corresponds to late afternoon in London (16:00) and early evening in Central Europe (17:00-18:00), which can work for end-of-day calls. For Asia, the overlap is minimal; early morning in Boa Vista (e.g., 8:00) is late evening in Tokyo (21:00), so scheduling requires flexibility.