Daylight hours in Honolulu
Honolulu gets 13h 25m of daylight on its longest day in June, and 10h 51m on its shortest in December — a difference of 2h 35m across the year.
How fast the days change
Around 17 March, Honolulu gains or loses about 1.2 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/Honolulu local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 07:11 | 18:10 | 10h 59m | 12:40 |
| February | 07:01 | 18:29 | 11h 28m | 12:45 |
| March | 06:39 | 18:40 | 12h 01m | 12:40 |
| April | 06:11 | 18:50 | 12h 39m | 12:31 |
| May | 05:53 | 19:02 | 13h 10m | 12:27 |
| June | 05:49 | 19:14 | 13h 25m | 12:32 |
| July | 05:58 | 19:16 | 13h 18m | 12:37 |
| August | 06:10 | 19:01 | 12h 51m | 12:35 |
| September | 06:18 | 18:34 | 12h 16m | 12:26 |
| October | 06:27 | 18:06 | 11h 40m | 12:17 |
| November | 06:42 | 17:49 | 11h 07m | 12:16 |
| December | 07:01 | 17:52 | 10h 51m | 12:26 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:34 | 18:42 | 12h 08m |
| June solstice | 21 Jun | 05:50 | 19:16 | 13h 26m |
| September equinox | 22 Sep | 06:20 | 18:27 | 12h 07m |
| December solstice | 21 Dec | 07:04 | 17:54 | 10h 50m |
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 United States
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.