Teresina on 15 October 2026: sunrise 05:30, sunset 17:43, day length 12 h 13 min.
| Fact | Value |
|---|---|
| Time zone | America/Fortaleza |
| Offset | UTC-3 |
| Region | Piauí |
| Latitude | -5.0892 |
| Longitude | -42.8019 |
| Population | 871,126 |
Teresina has no clock change scheduled in the next year. The last year with a seasonal offset change was 2002. The offset now is UTC-3.
| Fact | Value |
|---|---|
| Longest day | 21 December 2026, 12 h 25 min |
| Shortest day | 21 June 2026, 11 h 50 min |
| Earliest sunrise | 05:25 on 11 November 2026 |
| Latest sunset | 18:14 on 2 February 2026 |
| Golden hour on the longest day | 21 December morning 05:36 to 06:06, evening 17:32 to 18:01 |
| Date | Holiday |
|---|---|
| 25 October 2026 | Dia de Eleição |
| 2 November 2026 | Dia de Finados |
| 15 November 2026 | Proclamação da República |
| City | 09:00 to 17:00 |
|---|---|
| London | Teresina 09:00 to 13:00; London 13:00 to 17:00 |
| New York | Teresina 10:00 to 17:00; New York 09:00 to 16:00 |