Daylight hours in Basseterre
Basseterre gets 13h 09m of daylight on its longest day in June, and 11h 06m on its shortest in December — a difference of 2h 03m across the year.
How fast the days change
Around 17 March, Basseterre gains or loses about 1.0 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/St_Kitts local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 06:44 | 17:56 | 11h 13m | 12:20 |
| February | 06:37 | 18:12 | 11h 35m | 12:25 |
| March | 06:18 | 18:20 | 12h 02m | 12:19 |
| April | 05:54 | 18:26 | 12h 32m | 12:10 |
| May | 05:38 | 18:35 | 12h 57m | 12:07 |
| June | 05:36 | 18:46 | 13h 09m | 12:11 |
| July | 05:45 | 18:48 | 13h 04m | 12:16 |
| August | 05:54 | 18:36 | 12h 43m | 12:15 |
| September | 05:59 | 18:13 | 12h 14m | 12:06 |
| October | 06:03 | 17:49 | 11h 45m | 11:56 |
| November | 06:15 | 17:35 | 11h 19m | 11:55 |
| December | 06:33 | 17:39 | 11h 06m | 12:06 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:14 | 18:21 | 12h 07m |
| June solstice | 21 Jun | 05:37 | 18:47 | 13h 10m |
| September equinox | 22 Sep | 05:59 | 18:07 | 12h 07m |
| December solstice | 21 Dec | 06:36 | 17:41 | 11h 06m |
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.
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.