Daylight hours in Dallas
Dallas gets 14h 18m of daylight on its longest day in June, and 10h 00m on its shortest in December — a difference of 4h 18m across the year.
How fast the days change
Around 17 March, Dallas gains or loses about 2.0 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 America/Chicago local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 07:29 | 17:43 | 10h 14m | 12:36 |
| February | 07:10 | 18:12 | 11h 03m | 12:41 |
| March | 07:37 | 19:35 | 11h 58m | 13:36 |
| April | 06:57 | 19:57 | 13h 00m | 13:27 |
| May | 06:28 | 20:19 | 13h 51m | 13:23 |
| June | 06:18 | 20:36 | 14h 18m | 13:27 |
| July | 06:30 | 20:36 | 14h 06m | 13:33 |
| August | 06:50 | 20:12 | 13h 22m | 13:31 |
| September | 07:11 | 19:33 | 12h 23m | 13:22 |
| October | 07:31 | 18:54 | 11h 23m | 13:12 |
| November | 06:57 | 17:25 | 10h 28m | 12:11 |
| December | 07:22 | 17:22 | 10h 00m | 12:22 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 07:30 | 19:38 | 12h 08m |
| June solstice | 21 Jun | 06:19 | 20:38 | 14h 19m |
| September equinox | 22 Sep | 07:15 | 19:24 | 12h 09m |
| December solstice | 21 Dec | 07:25 | 17:25 | 9h 59m |
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.