Today, Saturday, October 3, 2026, the Sun rises at 06:03 and sets at 18:16 in Guajará-Mirim (RO), local time UTC-4. Daylight lasts 12h 12min, 36s more than yesterday.
The Sun today in Guajará-Mirim
It's daytime now Sunset in 6h 32min.
Compared with yesterday, today is 36s longer, and tomorrow will be 35s longer than today: in Guajará-Mirim the days are getting longer, heading toward the December 21 solstice. Solar noon, when the Sun crosses the local meridian, falls at 12:10, which is 10 minutes after 12:00 on the clock. That gap comes from the position of Guajará-Mirim 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 | 05:42 |
| Morning golden hour | 06:03 – 06:31 |
| Sunrise | 06:03 |
| Solar noon | 12:10 |
| Evening golden hour | 17:49 – 18:16 |
| Sunset | 18:16 |
| Civil twilight ends | 18:37 |
In Guajará-Mirim civil twilight lasts 21 minutes at each end of the day today, so it is light enough to walk outdoors from 05:42 to 18:37. 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 28 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 | 06:03 | 18:16 | 12h 12min | +36s |
| Sun, Oct 4 | 06:03 | 18:16 | 12h 13min | +35s |
| Mon, Oct 5 | 06:02 | 18:16 | 12h 14min | +37s |
| Tue, Oct 6 | 06:02 | 18:16 | 12h 14min | +35s |
| Wed, Oct 7 | 06:01 | 18:16 | 12h 15min | +36s |
| Thu, Oct 8 | 06:00 | 18:16 | 12h 15min | +36s |
| Fri, Oct 9 | 06:00 | 18:16 | 12h 16min | +35s |
Day length through the year in Guajará-Mirim
View data table
| Month | Day length |
|---|---|
| January | 12h 41min |
| February | 12h 26min |
| March | 12h 09min |
| April | 11h 51min |
| May | 11h 37min |
| June | 11h 29min |
| July | 11h 33min |
| August | 11h 45min |
| September | 12h 02min |
| October | 12h 20min |
| November | 12h 36min |
| December | 12h 45min |
How day length changes through the year in Guajará-Mirim
| Key date | Date | Sunrise | Sunset | Length |
|---|---|---|---|---|
| March equinox (start of autumn) | March 20 | 06:25 | 18:31 | 12h 6min |
| June solstice (start of winter) | June 21 | 06:38 | 18:07 | 11h 29min |
| September equinox (start of spring) | September 22 | 06:10 | 18:17 | 12h 6min |
| December solstice (start of summer) | December 21 | 05:56 | 18:42 | 12h 45min |
The longest days in Guajará-Mirim come around December, with 12h 45min of daylight, and the shortest around June, with 11h 29min. The seasonal swing is 1h 16min, a modest change typical of the tropics (10.79° S).
Time zone and comparison with the state capital
Guajará-Mirim 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 (275 km away), the Sun rises 5 min later on the clock and sets 6 min later. Today's daylight is 12h 12min here versus 12h 11min in Porto Velho.
Moon today
Today the Moon is Last Quarter, with about 46% of its disc lit and an age of 22.5 days. See the full moon calendar.
Guajará-Mirim at a glance
- StateRondônia (RO)
- Coordinates10.79° S, 65.33° W
- Time zoneUTC-4 (America/Porto_Velho)
- Area code (DDD)69
- IBGE code1100106
- Difference from Brasília1 hour behind Brasília
Cities near Guajará-Mirim
| City | Distance | Sunrise | Sunset |
|---|---|---|---|
| Nova Mamoré | 42 km | 06:04 | 18:16 |
| Buritis | 177 km | 05:58 | 18:10 |
| Campo Novo de Rondônia | 188 km | 05:57 | 18:09 |
| Costa Marques | 219 km | 05:58 | 18:12 |
| Monte Negro | 231 km | 05:55 | 18:08 |
| São Francisco do Guaporé | 238 km | 05:56 | 18:10 |
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.