Gillette, WY: shortest day and earliest sunset
The shortest day in Gillette
On Dec 21 the sun rises at 7:35 am and sets at 4:26 pm: 8h 51m of daylight, a dark winter. The longest day of summer has 15h 31m, so the swing is 6h 40m.
When it gets better in Gillette
- Earliest sunset: 4:23 pm on Dec 9, before the shortest day (here is why).
- Latest sunrise (standard time): 7:38 am on Jan 2.
- Back above 10 hours of daylight: Feb 5.
- By Feb 21 the days grow by 2.9 minutes a day.
Waking and coming home in the dark
With a 7:00 am alarm, the sun is not yet up on 93 weekdays a year. Heading home at 5:30 pm, it has already set on 75. 64 weekdays start and end in the dark. The alarm and lamp guide shows how that compares across the country.
At 44.3°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 Gillette
- A sunrise alarm clock is worth considering if you get up at 7:00 am or earlier: 52 weekday mornings here are still properly dark at that hour, mostly between Oct 2 and Mar 22.
- On daylight grounds there is a strong case for a light therapy lamp: 64 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 Feb 12: worth checking your bike lights and porch light before Nov 2.
Daylight in Gillette, month by month
Sunrise, sunset and day length on the 21st of each month, local clock time. December is the darkest, at 8h 51m.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| July 2026 | 5:38 am | 8:38 pm | 15h 00m |
| August 2026 | 6:12 am | 7:57 pm | 13h 45m |
| September 2026 | 6:48 am | 7:01 pm | 12h 13m |
| October 2026 | 7:25 am | 6:08 pm | 10h 43m |
| November 2026 | 7:06 am | 4:30 pm | 9h 24m |
| December 2026 | 7:35 am | 4:26 pm | 8h 51m |
| January 2027 | 7:30 am | 4:57 pm | 9h 26m |
| February 2027 | 6:52 am | 5:39 pm | 10h 47m |
| March 2027 | 7:03 am | 7:16 pm | 12h 12m |
| April 2027 | 6:09 am | 7:54 pm | 13h 45m |
| May 2027 | 5:29 am | 8:29 pm | 14h 59m |
| June 2027 | 5:18 am | 8:50 pm | 15h 31m |
Gillette against the places around it
On the shortest day, compared with Gillette (8h 51m, sunset 4:26 pm):
- Sheridan, WY, 81 mi away: 8h 47m of daylight (-4 min), sunset 4:30 pm (+4 min).
- Spearfish, SD, 84 mi away: 8h 50m of daylight (-1 min), sunset 4:18 pm (-8 min).
- Casper, WY, 107 mi away: 9h 01m of daylight (+10 min), sunset 4:34 pm (+8 min).
- Rapid City, SD, 114 mi away: 8h 53m of daylight (+2 min), sunset 4:17 pm (-9 min).
- Box Elder, SD, 120 mi away: 8h 52m of daylight (+1 min), sunset 4:17 pm (-9 min).