Daylight hours in Port-Vila
Port-Vila gets 13h 11m of daylight on its longest day in December, and 11h 04m on its shortest in June — a difference of 2h 07m across the year.
How fast the days change
Around 17 March, Port-Vila 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 Pacific/Efate local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:23 | 18:28 | 13h 04m | 11:55 |
| February | 05:40 | 18:21 | 12h 40m | 12:00 |
| March | 05:49 | 18:02 | 12h 13m | 11:55 |
| April | 05:55 | 17:37 | 11h 42m | 11:46 |
| May | 06:04 | 17:21 | 11h 17m | 11:43 |
| June | 06:15 | 17:19 | 11h 04m | 11:47 |
| July | 06:17 | 17:27 | 11h 10m | 11:52 |
| August | 06:06 | 17:36 | 11h 30m | 11:51 |
| September | 05:42 | 17:41 | 11h 59m | 11:42 |
| October | 05:18 | 17:47 | 12h 29m | 11:32 |
| November | 05:03 | 17:59 | 12h 56m | 11:31 |
| December | 05:06 | 18:17 | 13h 11m | 11:41 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 05:50 | 17:58 | 12h 08m |
| June solstice | 21 Jun | 06:16 | 17:20 | 11h 04m |
| September equinox | 22 Sep | 05:36 | 17:42 | 12h 06m |
| December solstice | 21 Dec | 05:08 | 18:20 | 13h 11m |
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.