Longest and shortest day in Louisville
In Louisville, United States, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 14h 50m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 9h 30m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 07:46 | 19:55 | 12h 9m |
| June solstice | Sunday, 21 June 2026 | 06:19 | 21:09 | 14h 50m |
| September equinox | Tuesday, 22 September 2026 | 07:30 | 19:39 | 12h 9m |
| December solstice | Monday, 21 December 2026 | 07:56 | 17:26 | 9h 30m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:58 | 17:46 | 9h 48m |
| February | 07:33 | 18:21 | 10h 48m |
| March | 07:54 | 19:50 | 11h 56m |
| April | 07:07 | 20:19 | 13h 12m |
| May | 06:32 | 20:47 | 14h 15m |
| June | 06:19 | 21:08 | 14h 49m |
| July | 06:31 | 21:05 | 14h 34m |
| August | 06:57 | 20:36 | 13h 39m |
| September | 07:24 | 19:50 | 12h 26m |
| October | 07:51 | 19:05 | 11h 13m |
| November | 07:24 | 17:30 | 10h 6m |
| December | 07:52 | 17:23 | 9h 31m |
Why the day gets longer and shorter in Louisville
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Louisville leans toward the Sun for part of the year and away for the rest. When it leans toward the Sun the days lengthen and the Sun climbs higher; half a year later the opposite happens. The size of the swing depends on how far Louisville sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Louisville
When is the longest day in Louisville?
The longest day in Louisville falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 14h 50m of daylight, sunrise at 06:19 and sunset at 21:09.
When is the shortest day in Louisville?
The shortest day in Louisville falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 9h 30m of daylight, sunrise at 07:56 and sunset at 17:26.
How much does day length change through the year in Louisville?
Between the longest and shortest day, Louisville gains and loses about 5h 20m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Louisville's coordinates with SunCalc, not looked up from a table.