Today, Thursday, October 29, 2026, the Sun rises at 05:42 and sets at 18:09 in Ariquemes (RO), local time UTC-4. Daylight lasts 12h 26min, 30s more than yesterday.
The Sun today in Ariquemes
It's nighttime now Sunrise in 10h 11min.
Compared with yesterday, today is 30s longer, and tomorrow will be 31s longer than today: in Ariquemes the days are getting longer, heading toward the December 21 solstice. Solar noon, when the Sun crosses the local meridian, falls at 11:55, which is 5 minutes before 12:00 on the clock. That gap comes from the position of Ariquemes inside its time zone (UTC-4) 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 | 05:21 |
| Morning golden hour | 05:42 – 06:11 |
| Sunrise | 05:42 |
| Solar noon | 11:55 |
| Evening golden hour | 17:40 – 18:09 |
| Sunset | 18:09 |
| Civil twilight ends | 18:30 |
In Ariquemes civil twilight lasts 22 minutes at each end of the day today, so it is light enough to walk outdoors from 05:21 to 18:30. The golden hour, when the Sun is less than 6° above the horizon and the light is soft and warm, lasts about 28 minutes in the morning and 29 minutes in the evening (photographers also use it for the best light on landscapes and portraits).
Next 7 days
| Date | Sunrise | Sunset | Length | Change |
|---|---|---|---|---|
| Thu, Oct 29 | 05:42 | 18:09 | 12h 26min | +30s |
| Fri, Oct 30 | 05:42 | 18:09 | 12h 26min | +31s |
| Sat, Oct 31 | 05:42 | 18:09 | 12h 27min | +29s |
| Sun, Nov 1 | 05:41 | 18:09 | 12h 27min | +30s |
| Mon, Nov 2 | 05:41 | 18:09 | 12h 28min | +30s |
| Tue, Nov 3 | 05:41 | 18:10 | 12h 28min | +29s |
| Wed, Nov 4 | 05:41 | 18:10 | 12h 29min | +29s |
Day length through the year in Ariquemes
View data table
| Month | Day length |
|---|---|
| January | 12h 38min |
| February | 12h 24min |
| March | 12h 09min |
| April | 11h 52min |
| May | 11h 39min |
| June | 11h 32min |
| July | 11h 35min |
| August | 11h 47min |
| September | 12h 02min |
| October | 12h 18min |
| November | 12h 34min |
| December | 12h 42min |
How day length changes through the year in Ariquemes
| Key date | Date | Sunrise | Sunset | Length |
|---|---|---|---|---|
| March equinox (start of autumn) | March 20 | 06:16 | 18:22 | 12h 6min |
| June solstice (start of winter) | June 21 | 06:27 | 18:00 | 11h 32min |
| September equinox (start of spring) | September 22 | 06:01 | 18:08 | 12h 6min |
| December solstice (start of summer) | December 21 | 05:49 | 18:31 | 12h 42min |
The longest days in Ariquemes come around December, with 12h 42min of daylight, and the shortest around June, with 11h 32min. The seasonal swing is 1h 9min, a modest change typical of the tropics (9.91° S).
Time zone and comparison with the state capital
Ariquemes uses 1 hour behind Brasília (UTC-4). This is the Amazon time zone, used in the states of Mato Grosso, Mato Grosso do Sul, Rondônia, Roraima and most of Amazonas. Compared with Porto Velho, the state capital (159 km away), the Sun rises 5 min earlier on the clock and sets 2 min earlier. Today's daylight is 12h 26min here versus 12h 24min in Porto Velho.
Moon today
Today the Moon is Waning Gibbous, with about 79% of its disc lit and an age of 19.3 days. See the full moon calendar.
Ariquemes at a glance
- StateRondônia (RO)
- Coordinates9.91° S, 63.03° W
- Time zoneUTC-4 (America/Porto_Velho)
- Area code (DDD)69
- IBGE code1100023
- Difference from Brasília1 hour behind Brasília
Cities near Ariquemes
| City | Distance | Sunrise | Sunset |
|---|---|---|---|
| Rio Crespo | 27 km | 05:42 | 18:08 |
| Alto Paraíso | 38 km | 05:44 | 18:09 |
| Monte Negro | 47 km | 05:43 | 18:10 |
| Cacaulândia | 51 km | 05:41 | 18:08 |
| Cujubim | 78 km | 05:41 | 18:06 |
| Itapuã do Oeste | 80 km | 05:44 | 18:08 |
See also
- Sunrise and sunset in Rondônia and all its cities
- Sunrise and sunset in Porto Velho, the capital of Rondônia
- Current time in Rondônia
- 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.