Daylight hours in Ljubljana
Ljubljana gets 15h 44m of daylight on its longest day in June, and 8h 40m on its shortest in December — a difference of 7h 05m across the year.
How fast the days change
Around 17 March, Ljubljana gains or loses about 3.3 minutes of daylight every day.
Enough to notice over a fortnight, though the seasons arrive more gently here than further from the equator.
Sunrise and sunset by month
On the 15th of each month, in Europe/Ljubljana local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 07:40 | 16:42 | 9h 03m | 12:11 |
| February | 07:04 | 17:27 | 10h 23m | 12:16 |
| March | 06:14 | 18:07 | 11h 53m | 12:10 |
| April | 06:15 | 19:48 | 13h 33m | 13:02 |
| May | 05:29 | 20:27 | 14h 58m | 12:58 |
| June | 05:10 | 20:54 | 15h 44m | 13:02 |
| July | 05:25 | 20:50 | 15h 24m | 13:07 |
| August | 06:01 | 20:11 | 14h 10m | 13:06 |
| September | 06:40 | 19:14 | 12h 34m | 12:57 |
| October | 07:18 | 18:16 | 10h 58m | 12:47 |
| November | 07:02 | 16:30 | 9h 28m | 11:46 |
| December | 07:37 | 16:16 | 8h 40m | 11:57 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:04 | 18:13 | 12h 09m |
| June solstice | 21 Jun | 05:10 | 20:56 | 15h 46m |
| September equinox | 22 Sep | 06:49 | 19:00 | 12h 12m |
| December solstice | 21 Dec | 07:41 | 16:18 | 8h 38m |
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.