Daylight hours in Mar del Plata
Mar del Plata gets 14h 47m of daylight on its longest day in December, and 9h 32m on its shortest in June — a difference of 5h 15m across the year.
How fast the days change
Around 12 March, Mar del Plata gains or loses about 2.5 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/Argentina/Buenos_Aires local time, daylight saving included.
| Month | Sunrise | Sunset | Daylight | Solar noon |
|---|---|---|---|---|
| January | 05:44 | 20:14 | 14h 29m | 12:59 |
| February | 06:19 | 19:48 | 13h 29m | 13:04 |
| March | 06:48 | 19:09 | 12h 21m | 12:59 |
| April | 07:17 | 18:23 | 11h 06m | 12:50 |
| May | 07:44 | 17:48 | 10h 05m | 12:46 |
| June | 08:04 | 17:36 | 9h 32m | 12:50 |
| July | 08:03 | 17:49 | 9h 46m | 12:56 |
| August | 07:34 | 18:14 | 10h 40m | 12:54 |
| September | 06:50 | 18:40 | 11h 51m | 12:45 |
| October | 06:04 | 19:07 | 13h 03m | 12:35 |
| November | 05:29 | 19:40 | 14h 11m | 12:34 |
| December | 05:21 | 20:08 | 14h 47m | 12:45 |
Solstices and equinoxes
| Date | Sunrise | Sunset | Daylight | |
|---|---|---|---|---|
| March equinox | 20 Mar | 06:53 | 19:01 | 12h 08m |
| June solstice | 21 Jun | 08:06 | 17:37 | 9h 31m |
| September equinox | 22 Sep | 06:39 | 18:46 | 12h 08m |
| December solstice | 21 Dec | 05:24 | 20:12 | 14h 48m |
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 Argentina
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.