Brazil’s Modern Offsets Are Stable — Historical Dates Are Not
Under current rules, Brazil’s four standard offsets do not change seasonally: UTC−02:00, UTC−03:00, UTC−04:00 and UTC−05:00 remain fixed through 2026. That makes a modern Brazil time-zone map easier to read than it was during the country’s former daylight-saving years.
The date picker remains important for historical research. Before daylight saving was ended in 2019, some southern, southeastern and central-western locations changed clocks seasonally. CalendarHours uses IANA date-aware rules for those older dates while keeping current 2026 offsets fixed.