Daylight hours in Durban
Durban gets 14h 03m of daylight on its longest day in December, and 10h 14m on its shortest in June — a difference of 3h 49m across the year.
How fast the days change
Around 17 March, Durban gains or loses about 1.8 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/Johannesburg local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:09 | 19:00 | 13h 51m | 12:05 |
| February | 05:36 | 18:43 | 13h 07m | 12:10 |
| March | 05:56 | 18:13 | 12h 17m | 12:04 |
| April | 06:14 | 17:36 | 11h 22m | 11:55 |
| May | 06:33 | 17:11 | 10h 37m | 11:52 |
| June | 06:49 | 17:03 | 10h 14m | 11:56 |
| July | 06:49 | 17:13 | 10h 24m | 12:01 |
| August | 06:29 | 17:31 | 11h 02m | 12:00 |
| September | 05:54 | 17:48 | 11h 54m | 11:51 |
| October | 05:17 | 18:05 | 12h 48m | 11:41 |
| November | 04:51 | 18:28 | 13h 37m | 11:40 |
| December | 04:49 | 18:52 | 14h 03m | 11:50 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 05:59 | 18:07 | 12h 08m |
| June solstice | 21 Jun | 06:51 | 17:04 | 10h 13m |
| September equinox | 22 Sep | 05:45 | 17:51 | 12h 07m |
| December solstice | 21 Dec | 04:51 | 18:55 | 14h 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 South Africa
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.