Aberdeen, SD: shortest day and earliest sunset
The shortest day in Aberdeen
On Dec 21 the sun rises at 8:11 am and sets at 4:53 pm: 8h 43m of daylight, a dark winter. The longest day of summer has 15h 41m, so the swing is 6h 58m.
When it gets better in Aberdeen
- Earliest sunset: 4:50 pm on Dec 9, before the shortest day (here is why).
- Latest sunrise (standard time): 8:14 am on Jan 2.
- Back above 10 hours of daylight: Feb 7.
- By Feb 21 the days grow by 3.1 minutes a day.
Waking and coming home in the dark
With a 7:00 am alarm, the sun is not yet up on 149 weekdays a year. Heading home at 5:30 pm, it has already set on 60. 60 weekdays start and end in the dark. The alarm and lamp guide shows how that compares across the country.
At 45.5°N this is as far north as, or farther than, Nashua NH (43°N), where a 1990 survey found 9.7% of adults reported winter depression.
What to do about it in Aberdeen
- A sunrise alarm clock is worth getting here: on 119 weekdays the sun is still at least 20 minutes from rising at 7:00 am. Dark mornings run from Sep 7 to Apr 8, so set it up before Sep 7.
- On daylight grounds there is a strong case for a light therapy lamp: 60 weekdays start and end in the dark. Use it in the morning, and if winter low mood is the reason, ask a doctor before you rely on one.
- If you head home at 5:30 pm, the sun has already set from Nov 2 to Jan 22: worth checking your bike lights and porch light before Nov 2.
Daylight in Aberdeen, month by month
Sunrise, sunset and day length on the 21st of each month, local clock time. December is the darkest, at 8h 43m.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| July 2026 | 6:06 am | 9:14 pm | 15h 08m |
| August 2026 | 6:42 am | 8:31 pm | 13h 49m |
| September 2026 | 7:20 am | 7:33 pm | 12h 13m |
| October 2026 | 7:58 am | 6:38 pm | 10h 40m |
| November 2026 | 7:41 am | 4:58 pm | 9h 17m |
| December 2026 | 8:11 am | 4:53 pm | 8h 43m |
| January 2027 | 8:06 am | 5:25 pm | 9h 19m |
| February 2027 | 7:26 am | 6:10 pm | 10h 43m |
| March 2027 | 7:35 am | 7:48 pm | 12h 12m |
| April 2027 | 6:38 am | 8:28 pm | 13h 49m |
| May 2027 | 5:57 am | 9:04 pm | 15h 07m |
| June 2027 | 5:45 am | 9:26 pm | 15h 41m |
Aberdeen against the places around it
On the shortest day, compared with Aberdeen (8h 43m, sunset 4:53 pm):
- Watertown, SD, 75 mi away: 8h 47m of daylight (+4 min), sunset 4:50 pm (-3 min).
- Huron, SD, 77 mi away: 8h 51m of daylight (+8 min), sunset 4:56 pm (+3 min).
- Jamestown, ND, 100 mi away: 8h 31m of daylight (-12 min), sunset 4:49 pm (-4 min).
- Brookings, SD, 115 mi away: 8h 51m of daylight (+8 min), sunset 4:51 pm (-2 min).
- Pierre, SD, 118 mi away: 8h 51m of daylight (+8 min), sunset 5:05 pm (+12 min).