Piauí, Brazil
Piauí follows Brasília Time, UTC−3, in every municipality. Teresina, Parnaíba, and the inland cities share one clock, while local sunrise varies from east to west and through the year.
Teresina, Brazil
Monday, 7 September 2026
UTC−3 · America/Fortaleza
Time and sun data for Teresina — the largest city of Piauí
The sun in Teresina
Sunrise 5:49 AM Solar noon 11:50 AM Sunset 5:52 PM Daylight 12 h 02 min Night 11 h 58 min Civil twilight 5:28 AM – 6:12 PM
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Current time in Piauí, Brazil
The state’s local time is three hours behind UTC. It is the same official hour used in Brasília and in neighbouring Maranhão, Ceará, Pernambuco, and Bahia, simplifying regional calls and overland journeys.
Piauí does not currently move its clocks for a seasonal daylight-saving period. When comparing Teresina with a foreign city, however, check the foreign location’s rules for the chosen date. Piauí needs no clock adjustment at its state borders, though a long road can still make the next appointment feel far away.
Places that share the state clock
Piauí reaches from a short Atlantic coastline into a large interior. Its civil-time arrangement remains uniform across that geography, so moving between its principal municipalities never creates an official one-hour jump.
Teresina is the capital, situated beside the Parnaíba River. Parnaíba is the principal city near the coast. Picos is an important centre in the interior. Floriano lies in the southern part of the state.
Piripiri serves communities in northern Piauí. The shared UTC−3 offset should not be confused with simultaneous daylight. Parnaíba and Picos may display the same hour yet have different positions of the Sun because their longitudes and latitudes are not identical.
Finding a useful sunrise time
A sunrise lookup should name the municipality. Teresina is a reasonable reference for the capital area, but it is not an exact substitute for coastal or southern Piauí. The selected calendar day is equally important.
Because Piauí is relatively close to the Equator, seasonal changes in daylight are less extreme than in Brazil’s far south. They still exist, and sunrise does not remain at one permanent clock time. Enter the correct municipality rather than Piauí alone.
Verify that the result is expressed in UTC−3. Check civil twilight if work begins before sunrise. Use a separate weather forecast to assess cloud or rain. The published sunrise is based on the horizon and the Sun’s calculated position. A hill, tree line, or building can postpone direct visibility at a particular observation point. Conversely, the sky begins brightening before the formal sunrise moment.
Questions and answers
- What time zone is used in Teresina?
- Teresina uses Brasília Time, UTC−3.
- Does Parnaíba keep a different coastal time?
- No. Parnaíba follows the same UTC−3 time as the rest of Piauí.
- Is sunrise constant because the state is near the Equator?
- No. Daylight varies less dramatically than in southern Brazil, but sunrise still changes by date and location.