Daylight hours in Kolwezi
Kolwezi gets 12h 45m of daylight on its longest day in December, and 11h 30m on its shortest in June — a difference of 1h 15m across the year.
How fast the days change
Around 12 March, Kolwezi gains or loses about 0.6 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 Africa/Lubumbashi local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:07 | 18:47 | 12h 41m | 12:27 |
| February | 06:19 | 18:45 | 12h 26m | 12:32 |
| March | 06:22 | 18:31 | 12h 10m | 12:27 |
| April | 06:22 | 18:14 | 11h 52m | 12:18 |
| May | 06:25 | 18:03 | 11h 37m | 12:14 |
| June | 06:33 | 18:03 | 11h 30m | 12:18 |
| July | 06:37 | 18:10 | 11h 33m | 12:24 |
| August | 06:29 | 18:15 | 11h 45m | 12:22 |
| September | 06:12 | 18:14 | 12h 02m | 12:13 |
| October | 05:53 | 18:13 | 12h 20m | 12:03 |
| November | 05:44 | 18:20 | 12h 36m | 12:02 |
| December | 05:50 | 18:35 | 12h 45m | 12:13 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:22 | 18:29 | 12h 07m |
| June solstice | 21 Jun | 06:35 | 18:04 | 11h 30m |
| September equinox | 22 Sep | 06:07 | 18:14 | 12h 06m |
| December solstice | 21 Dec | 05:53 | 18:38 | 12h 45m |
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 Democratic Republic of the Congo
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.