Longest and shortest day in Denver
In Denver, United States, the longest day of 2026 is around the June solstice on Sunday, 21 June 2026, with 14h 59m of daylight, and the shortest is around the December solstice on Monday, 21 December 2026, with 9h 21m.
| Turning point | Date | Sunrise | Sunset | Day length |
|---|---|---|---|---|
| March equinox | Friday, 20 March 2026 | 07:03 | 19:12 | 12h 9m |
| June solstice | Sunday, 21 June 2026 | 05:32 | 20:31 | 14h 59m |
| September equinox | Tuesday, 22 September 2026 | 06:47 | 18:56 | 12h 9m |
| December solstice | Monday, 21 December 2026 | 07:17 | 16:38 | 9h 21m |
| Month | Sunrise | Sunset | Day length |
|---|---|---|---|
| January | 07:19 | 16:59 | 9h 41m |
| February | 06:52 | 17:36 | 10h 44m |
| March | 07:11 | 19:06 | 11h 55m |
| April | 06:22 | 19:38 | 13h 15m |
| May | 05:45 | 20:07 | 14h 22m |
| June | 05:31 | 20:29 | 14h 58m |
| July | 05:44 | 20:26 | 14h 42m |
| August | 06:12 | 19:55 | 13h 44m |
| September | 06:41 | 19:08 | 12h 27m |
| October | 07:10 | 18:20 | 11h 10m |
| November | 06:44 | 16:44 | 9h 59m |
| December | 07:13 | 16:36 | 9h 22m |
Why the day gets longer and shorter in Denver
Earth's axis is tilted about 23.4 degrees, so as the planet orbits the Sun, Denver 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 Denver sits from the equator: the further away, the bigger the difference between the longest and shortest day.
Frequently asked questions about day length in Denver
When is the longest day in Denver?
The longest day in Denver falls around the June solstice, on Sunday, 21 June 2026 in 2026, with about 14h 59m of daylight, sunrise at 05:32 and sunset at 20:31.
When is the shortest day in Denver?
The shortest day in Denver falls around the December solstice, on Monday, 21 December 2026 in 2026, with about 9h 21m of daylight, sunrise at 07:17 and sunset at 16:38.
How much does day length change through the year in Denver?
Between the longest and shortest day, Denver gains and loses about 5h 38m of daylight. The change is fastest around the March and September equinoxes and slowest near the solstices.
Every figure is computed from Denver's coordinates with SunCalc, not looked up from a table.