Sunrise and Sunset times in Teresina, Brazil 
Teresina
Piauí
Time zone: America/Fortaleza, UTC -3 h.
Latitude: -5.095, Longitude: -42.78
907 000 people
| Date | Sunrise | Solar Noon | Sunset | Length of day |
|---|---|---|---|---|
| 2025-Jul-01, Tuesday | 06:00:06 | 11:55:05 | 17:50:05 | 11h 49m 59s |
| 2025-Jul-02, Wednesday | 06:00:15 | 11:55:17 | 17:50:18 | 11h 50m 3s |
| 2025-Jul-03, Thursday | 06:00:24 | 11:55:28 | 17:50:31 | 11h 50m 7s |
| 2025-Jul-04, Friday | 06:00:33 | 11:55:38 | 17:50:44 | 11h 50m 11s |
| 2025-Jul-05, Saturday | 06:00:41 | 11:55:49 | 17:50:56 | 11h 50m 15s |
| 2025-Jul-06, Sunday | 06:00:49 | 11:55:59 | 17:51:09 | 11h 50m 20s |
| 2025-Jul-07, Monday | 06:00:56 | 11:56:08 | 17:51:21 | 11h 50m 25s |
| 2025-Jul-08, Tuesday | 06:01:02 | 11:56:18 | 17:51:33 | 11h 50m 31s |
| 2025-Jul-09, Wednesday | 06:01:08 | 11:56:26 | 17:51:44 | 11h 50m 36s |
| 2025-Jul-10, Thursday | 06:01:14 | 11:56:35 | 17:51:56 | 11h 50m 42s |
| 2025-Jul-11, Friday | 06:01:19 | 11:56:43 | 17:52:07 | 11h 50m 48s |
| 2025-Jul-12, Saturday | 06:01:23 | 11:56:50 | 17:52:18 | 11h 50m 55s |
| 2025-Jul-13, Sunday | 06:01:26 | 11:56:57 | 17:52:28 | 11h 51m 2s |
| 2025-Jul-14, Monday | 06:01:29 | 11:57:04 | 17:52:38 | 11h 51m 9s |
| 2025-Jul-15, Tuesday | 06:01:32 | 11:57:10 | 17:52:48 | 11h 51m 16s |
| 2025-Jul-16, Wednesday | 06:01:34 | 11:57:15 | 17:52:57 | 11h 51m 23s |
| 2025-Jul-17, Thursday | 06:01:35 | 11:57:20 | 17:53:06 | 11h 51m 31s |
| 2025-Jul-18, Friday | 06:01:35 | 11:57:25 | 17:53:15 | 11h 51m 40s |
| 2025-Jul-19, Saturday | 06:01:35 | 11:57:29 | 17:53:23 | 11h 51m 48s |
| 2025-Jul-20, Sunday | 06:01:34 | 11:57:32 | 17:53:31 | 11h 51m 57s |
| 2025-Jul-21, Monday | 06:01:32 | 11:57:35 | 17:53:38 | 11h 52m 6s |
| 2025-Jul-22, Tuesday | 06:01:30 | 11:57:37 | 17:53:45 | 11h 52m 15s |
| 2025-Jul-23, Wednesday | 06:01:27 | 11:57:39 | 17:53:51 | 11h 52m 24s |
| 2025-Jul-24, Thursday | 06:01:23 | 11:57:40 | 17:53:57 | 11h 52m 34s |
| 2025-Jul-25, Friday | 06:01:18 | 11:57:40 | 17:54:02 | 11h 52m 44s |
| 2025-Jul-26, Saturday | 06:01:13 | 11:57:40 | 17:54:07 | 11h 52m 54s |
| 2025-Jul-27, Sunday | 06:01:07 | 11:57:40 | 17:54:12 | 11h 53m 5s |
| 2025-Jul-28, Monday | 06:01:01 | 11:57:38 | 17:54:16 | 11h 53m 15s |
| 2025-Jul-29, Tuesday | 06:00:54 | 11:57:36 | 17:54:19 | 11h 53m 25s |
| 2025-Jul-30, Wednesday | 06:00:46 | 11:57:34 | 17:54:22 | 11h 53m 36s |
| 2025-Jul-31, Thursday | 06:00:37 | 11:57:31 | 17:54:25 | 11h 53m 48s |
Teresina on Brazil map:
Cities in the same time zone America/Fortaleza
Fortaleza (Ceará), Natal (Rio Grande do Norte), Sao Luis (Maranhão), Joao Pessoa (Paraíba), Macau , Campina Grande (Paraíba), Crato (Ceará), Juazeiro do Norte (Ceará), Imperatriz (Maranhão), Timon (Maranhão), Mossoro (Rio Grande do Norte), Sobral (Ceará), Parnaiba (Piauí), Caxias (Maranhão), Patos (Paraíba), Sao Tome (São Tomé), Codo (Maranhão), Bacabal (Maranhão), Iguatu (Ceará), Balsas (Maranhão), Santa Ines (Maranhão), Picos (Piauí), Itapipoca (Ceará), Sao Jose de Ribamar (Maranhão), Caico (Rio Grande do Norte), Crateus (Ceará), Quixada (Ceará), Barra do Corda (Maranhão), Floriano (Piauí), Piripiri (Piauí)
Largest Populated Areas in Brazil
Sao Paulo (São Paulo), Rio de Janeiro (Rio de Janeiro), Belo Horizonte (Minas Gerais), Porto Alegre (Rio Grande do Sul), Brasilia (Distrito Federal), Recife (Pernambuco), Fortaleza (Ceará), Salvador (Bahia), Curitiba (Paraná), Campinas (São Paulo), Belem (Pará), Goiania (Goiás), Manaus (Amazonas), Santos (São Paulo), Vitoria (Espírito Santo), Niteroi (Rio de Janeiro), Vila Velha (Amapá), Vila Velha (Espírito Santo), Maceio (Alagoas), Natal (Rio Grande do Norte), Sao Luis (Maranhão), Florianopolis (Santa Catarina), Joinvile (Santa Catarina), Natal (Amazonas), Joao Pessoa (Paraíba), Olinda (Pernambuco), Novo Hamburgo (Rio Grande do Sul), Iguacu (Rio de Janeiro), Cuiaba (Mato Grosso), Campo Grande (Mato Grosso do Sul)
Daylight Hours FAQ: 10 Most Googled Questions Answered
1. What are daylight hours?
Daylight hours refer to the period between sunrise and sunset. This duration changes throughout the year based on season and geographic location.
2. Why are days shorter in winter and longer in summer?
Earth's 23.5° axial tilt causes uneven sunlight distribution. Your hemisphere receives less direct sunlight in winter (shorter days) and more in summer (longer days).
3. When is the longest day of the year?
Northern Hemisphere: June 20-22 (summer solstice).
Southern Hemisphere: December 21-23.
Near polar circles, the sun doesn't set for 24 hours.
4. When is the shortest day of the year?
Northern Hemisphere: December 21-22 (winter solstice).
Southern Hemisphere: June 20-21.
5. How does latitude affect daylight hours?
The closer to poles, the more extreme variations:
- Equator: ~12-hour days year-round
- Polar regions: Midnight sun/polar nights occur
6. Why do New York and Miami have different day lengths?
Miami's lower latitude means:
- Winter days are longer than NY's
- Summer days are slightly shorter
7. When are day and night equal?
During equinoxes:
- Spring: March 20-21
- Fall: September 22-23
How fast do days lengthen/shorten?
Most rapid change near equinoxes: 2-4 minutes daily.
Slowest change near solstices: <1 minute daily.
9. Where can I check daylight hours for my city?
Reliable tools:
- Timeanddate.com
- SunCalc.org
- Photographer's Ephemeris app
10. Does daylight affect health?
Yes. Reduced winter sunlight may cause:
- Seasonal Affective Disorder (SAD)
- Vitamin D deficiency
Solution: Light therapy lamps & midday walks