Daylight hours in Brasília
Brasília gets 13h 03m of daylight on its longest day in December, and 11h 12m on its shortest in June — a difference of 1h 52m across the year.
How fast the days change
Around 12 March, Brasília gains or loses about 0.9 minutes of daylight every day.
Barely perceptible — near the equator the length of the day hardly changes at all, and the seasons announce themselves through rain and heat instead.
Sunrise and sunset by month
On the 15th of each month, in America/Sao_Paulo local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:52 | 18:49 | 12h 57m | 12:21 |
| February | 06:07 | 18:43 | 12h 36m | 12:25 |
| March | 06:14 | 18:26 | 12h 11m | 12:20 |
| April | 06:19 | 18:03 | 11h 44m | 12:11 |
| May | 06:26 | 17:49 | 11h 23m | 12:08 |
| June | 06:36 | 17:48 | 11h 12m | 12:12 |
| July | 06:39 | 17:55 | 11h 16m | 12:17 |
| August | 06:28 | 18:03 | 11h 35m | 12:16 |
| September | 06:06 | 18:07 | 12h 00m | 12:06 |
| October | 05:44 | 18:10 | 12h 27m | 11:57 |
| November | 05:30 | 18:21 | 12h 51m | 11:56 |
| December | 05:35 | 18:38 | 13h 03m | 12:06 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:15 | 18:22 | 12h 07m |
| June solstice | 21 Jun | 06:37 | 17:49 | 11h 11m |
| September equinox | 22 Sep | 06:01 | 18:07 | 12h 07m |
| December solstice | 21 Dec | 05:37 | 18:41 | 13h 04m |
The equinoxes give almost exactly twelve hours of daylight everywhere on earth — "almost" because sunrise is defined by the sun's upper edge rather than its centre, and the atmosphere bends its light over the horizon before it has really arrived. Both lengthen the day by a few minutes.
Other cities in Brazil
Assumptions
- Sea-level horizon. Hills, mountains and buildings all delay sunrise and bring sunset forward, sometimes by a lot in a valley.
- Standard refraction. Sunrise is taken at −0.833°, allowing for the sun's disc and average atmospheric bending. Unusual air conditions shift it by a minute or two.
- Local clock time, with daylight saving applied from the IANA timezone database.