Chesterfield, MO: shortest day and earliest sunset
The shortest day in Chesterfield
On Dec 21 the sun rises at 7:17 am and sets at 4:44 pm: 9h 28m of daylight, a moderate winter. The longest day of summer has 14h 52m, so the swing is 5h 25m.
When it gets better in Chesterfield
- Earliest sunset: 4:41 pm on Dec 6, before the shortest day (here is why).
- Latest sunrise (standard time): 7:21 am on Jan 5.
- Back above 10 hours of daylight: Jan 24.
- By Feb 21 the days grow by 2.4 minutes a day.
Waking and coming home in the dark
With a 7:00 am alarm, the sun is not yet up on 79 weekdays a year. Heading home at 5:30 pm, it has already set on 70. 50 weekdays start and end in the dark. The alarm and lamp guide shows how that compares across the country.
At 38.7°N this sits between Sarasota FL (27°N, 1.4%) and Nashua NH (43°N, 9.7%) in a 1990 survey of winter depression by latitude.
What to do about it in Chesterfield
- You probably do not need a sunrise alarm clock for a 7:00 am start here: only 12 weekday mornings are still properly dark. If you get up earlier, check the hour against the sunrise times in the table below.
- There is some case for a light therapy lamp: 50 weekdays start and end in the dark. If you notice winter low mood, ask a doctor whether one fits you.
- If you head home at 5:30 pm, the sun has already set from Nov 2 to Feb 5: worth checking your bike lights and porch light before Nov 2.
Daylight in Chesterfield, month by month
Sunrise, sunset and day length on the 21st of each month, local clock time. December is the darkest, at 9h 28m.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| July 2026 | 5:55 am | 8:22 pm | 14h 28m |
| August 2026 | 6:22 am | 7:48 pm | 13h 27m |
| September 2026 | 6:49 am | 7:01 pm | 12h 11m |
| October 2026 | 7:18 am | 6:16 pm | 10h 58m |
| November 2026 | 6:51 am | 4:45 pm | 9h 54m |
| December 2026 | 7:17 am | 4:44 pm | 9h 28m |
| January 2027 | 7:16 am | 5:11 pm | 9h 55m |
| February 2027 | 6:46 am | 5:47 pm | 11h 01m |
| March 2027 | 7:04 am | 7:15 pm | 12h 11m |
| April 2027 | 6:18 am | 7:45 pm | 13h 27m |
| May 2027 | 5:46 am | 8:13 pm | 14h 27m |
| June 2027 | 5:38 am | 8:30 pm | 14h 52m |
Chesterfield against the places around it
On the shortest day, compared with Chesterfield (9h 28m, sunset 4:44 pm):
- Ballwin, MO, 5 mi away: 9h 28m of daylight (0 min), sunset 4:44 pm (0 min).
- Ellisville, MO, 5 mi away: 9h 28m of daylight (0 min), sunset 4:45 pm (+1 min).
- Town and Country, MO, 6 mi away: 9h 28m of daylight (0 min), sunset 4:44 pm (0 min).
- Manchester, MO, 6 mi away: 9h 28m of daylight (0 min), sunset 4:44 pm (0 min).
- Maryland Heights, MO, 7 mi away: 9h 27m of daylight (-1 min), sunset 4:44 pm (0 min).