Today, Saturday, October 3, 2026, the Sun rises at 05:35 and sets at 17:44 in Porto (PI), local time UTC-3. Daylight lasts 12h 8min, 13s more than yesterday.
The Sun today in Porto
It's daytime now Sunset in 0h 52min.
Compared with yesterday, today is 13s longer, and tomorrow will be 13s longer than today: in Porto the days are getting longer, heading toward the December 21 solstice. Solar noon, when the Sun crosses the local meridian, falls at 11:39, which is 21 minutes before 12:00 on the clock. That gap comes from the position of Porto inside its time zone (UTC-3) and from the equation of time, which moves solar noon by up to 16 minutes through the year.
Twilight and golden hour
| Phase | Time |
|---|---|
| Civil twilight begins | 05:14 |
| Morning golden hour | 05:35 – 06:02 |
| Sunrise | 05:35 |
| Solar noon | 11:39 |
| Evening golden hour | 17:16 – 17:44 |
| Sunset | 17:44 |
| Civil twilight ends | 18:05 |
In Porto civil twilight lasts 21 minutes at each end of the day today, so it is light enough to walk outdoors from 05:14 to 18:05. The golden hour, when the Sun is less than 6° above the horizon and the light is soft and warm, lasts about 27 minutes in the morning and 27 minutes in the evening (photographers also use it for the best light on landscapes and portraits).
Next 7 days
| Date | Sunrise | Sunset | Length | Change |
|---|---|---|---|---|
| Sat, Oct 3 | 05:35 | 17:44 | 12h 8min | +13s |
| Sun, Oct 4 | 05:35 | 17:44 | 12h 9min | +13s |
| Mon, Oct 5 | 05:34 | 17:43 | 12h 9min | +13s |
| Tue, Oct 6 | 05:34 | 17:43 | 12h 9min | +13s |
| Wed, Oct 7 | 05:33 | 17:43 | 12h 9min | +13s |
| Thu, Oct 8 | 05:33 | 17:43 | 12h 9min | +13s |
| Fri, Oct 9 | 05:33 | 17:43 | 12h 10min | +13s |
Day length through the year in Porto
View data table
| Month | Day length |
|---|---|
| January | 12h 19min |
| February | 12h 13min |
| March | 12h 07min |
| April | 12h 01min |
| May | 11h 56min |
| June | 11h 53min |
| July | 11h 54min |
| August | 11h 59min |
| September | 12h 04min |
| October | 12h 11min |
| November | 12h 17min |
| December | 12h 20min |
How day length changes through the year in Porto
| Key date | Date | Sunrise | Sunset | Length |
|---|---|---|---|---|
| March equinox (start of autumn) | March 20 | 05:54 | 18:01 | 12h 6min |
| June solstice (start of winter) | June 21 | 05:55 | 17:49 | 11h 53min |
| September equinox (start of spring) | September 22 | 05:40 | 17:46 | 12h 6min |
| December solstice (start of summer) | December 21 | 05:38 | 17:59 | 12h 21min |
The longest days in Porto come around December, with 12h 21min of daylight, and the shortest around June, with 11h 53min. The seasonal swing is 0h 27min, so the length of the day is almost constant all year, as expected this close to the equator (3.89° S).
Time zone and comparison with the state capital
Porto uses the same time as Brasília (UTC-3). This is the same zone as most of the country and the one used for the official Brazilian time. Compared with Teresina, the state capital (134 km away), the Sun rises at practically the same clock time and sets at practically the same clock time. Today's daylight is 12h 8min here versus 12h 9min in Teresina.
Moon today
Today the Moon is Last Quarter, with about 44% of its disc lit and an age of 22.7 days. See the full moon calendar.
Porto at a glance
- StatePiauí (PI)
- Coordinates3.89° S, 42.70° W
- Time zoneUTC-3 (America/Sao_Paulo)
- Area code (DDD)86
- IBGE code2208502
- Difference from BrasíliaSame time as Brasília
Cities near Porto
| City | Distance | Sunrise | Sunset |
|---|---|---|---|
| Campo Largo do Piauí | 11 km | 05:35 | 17:43 |
| Nossa Senhora dos Remédios | 13 km | 05:35 | 17:43 |
| Matias Olímpio | 25 km | 05:34 | 17:43 |
| São João do Arraial | 29 km | 05:34 | 17:43 |
| Miguel Alves | 38 km | 05:36 | 17:45 |
| Morro do Chapéu do Piauí | 47 km | 05:33 | 17:42 |
See also
- Sunrise and sunset in Piauí and all its cities
- Sunrise and sunset in Teresina, the capital of Piauí
- Current time in Piauí
- Sunrise and sunset in every state and country · Start of the seasons
Times are calculated astronomically for the urban centre and are accurate to about a minute; sunrise and sunset use the upper edge of the Sun and atmospheric refraction. Hills and buildings can change the visible time.