Sunrise and sunset times in Keystone, SD
Check out today's and tomorrow's sunrise and sunset times in Keystone, as well as the whole calendar for October 2026.
Today
October 6, 2026. Current time: 10:02:54 am
First light at 6:28:37 am
Sunrise time: 6:57:24 am MDT
Sunset time: 6:25:18 pm MDT
Last light at 6:54:02 pm
Sun position chart
Now · Sun altitude: 29.2° · Azimuth: 133° (SE)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 11 hours, 27 minutes
8 hours, 22 minutes left for today's sunset in Keystone
Moon rose on Oct 6 at 2:19 AM
Moon will set on Oct 6 at 4:39 PMMoon phase: 🌘 Waning Crescent (18%)🌑 New moon: Oct 10 at 9:50 AM · 🌕 Full moon: Oct 25 at 10:13 PMTomorrow
October 7, 2026
First light at 6:29:47 am
Sunrise time: 6:58:36 am MDT
Sunset time: 6:23:32 pm MDT
Last light at 6:52:17 pm
Day length: 11 hours, 24 minutes
Tomorrow will be 3 minutes shorter than today in Keystone
Moon will rise on Oct 7 at 3:35 AM Moon will set on Oct 7 at 5:01 PMMoon phase: 🌘 Waning Crescent (7%)
- Keystone, South Dakota
- Latitude: 43.895542 (North)
- Longitude: -103.418243 (West)
- Time zone: Mountain Daylight Time (MDT, UTC−6)
Shortest day in Keystone, SD
The shortest day of the year will be in 2 months and 15 days, during the winter solstice on December 21, 2026, with a daylight length of 8 hours, 53 minutes.Longest day in Keystone, SD
The longest day of the year was around 3 months ago, during the summer solstice on June 21, 2026, with a daylight length of 15 hours, 28 minutes.
October 2026 - Keystone, South Dakota - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of October in Keystone.
All times are in Mountain Daylight Time (MDT, UTC−6).
The day length shortens by 1 hour, 26 minutes over the course of October 2026 in Keystone, SD - from 11 hours, 42 minutes on the first day to 10 hours, 16 minutes on the last day.
| Day | First Light | Sunrise | Sunset | Last Light | Day Length | Day Length Variation | Solar Noon
Time of day when the sun reaches its highest point in the sky.
|
Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thu, Oct 1 | 6:22:46 am | 6:51:29 am | 6:34:18 pm | 7:02:58 pm | 11h 42m 49s | -2m 59s | 12:43:15 pm | 42.7° | 5:49:20 am | 7:36:19 pm | 5:15:27 am | 8:10:05 pm | 12h 18m 22s | 🌖 (65%) |
| Fri, Oct 2 | 6:23:56 am | 6:52:40 am | 6:32:29 pm | 7:01:09 pm | 11h 39m 49s | -3m 0s | 12:42:56 pm | 42.3° | 5:50:31 am | 7:34:29 pm | 5:16:42 am | 8:08:12 pm | 12h 21m 21s | 🌖 (54%) |
| Sat, Oct 3 | 6:25:06 am | 6:53:50 am | 6:30:41 pm | 6:59:22 pm | 11h 36m 51s | -2m 58s | 12:42:37 pm | 41.9° | 5:51:42 am | 7:32:41 pm | 5:17:57 am | 8:06:20 pm | 12h 24m 20s | 🌗 (42%) |
| Sun, Oct 4 | 6:26:16 am | 6:55:01 am | 6:28:53 pm | 6:57:35 pm | 11h 33m 52s | -2m 59s | 12:42:19 pm | 41.5° | 5:52:53 am | 7:30:53 pm | 5:19:11 am | 8:04:30 pm | 12h 27m 19s | 🌘 (31%) |
| Mon, Oct 5 | 6:27:26 am | 6:56:12 am | 6:27:05 pm | 6:55:48 pm | 11h 30m 53s | -2m 59s | 12:42:00 pm | 41.1° | 5:54:04 am | 7:29:06 pm | 5:20:25 am | 8:02:40 pm | 12h 30m 19s | 🌘 (21%) |
| Tue, Oct 6 | 6:28:37 am | 6:57:24 am | 6:25:18 pm | 6:54:02 pm | 11h 27m 54s | -2m 59s | 12:41:42 pm | 40.8° | 5:55:15 am | 7:27:20 pm | 5:21:38 am | 8:00:51 pm | 12h 33m 18s | 🌘 (13%) |
| Wed, Oct 7 | 6:29:47 am | 6:58:36 am | 6:23:32 pm | 6:52:17 pm | 11h 24m 56s | -2m 58s | 12:41:25 pm | 40.4° | 5:56:26 am | 7:25:34 pm | 5:22:51 am | 7:59:04 pm | 12h 36m 16s | 🌘 (7%) |
| Thu, Oct 8 | 6:30:58 am | 6:59:48 am | 6:21:46 pm | 6:50:33 pm | 11h 21m 58s | -2m 58s | 12:41:08 pm | 40° | 5:57:37 am | 7:23:50 pm | 5:24:05 am | 7:57:17 pm | 12h 39m 14s | 🌘 (2%) |
| Fri, Oct 9 | 6:32:09 am | 7:01:00 am | 6:20:01 pm | 6:48:49 pm | 11h 19m 1s | -2m 57s | 12:40:51 pm | 39.6° | 5:58:48 am | 7:22:06 pm | 5:25:17 am | 7:55:32 pm | 12h 42m 12s | 🌘 (0.2%) |
| Sat, Oct 10 | 6:33:20 am | 7:02:13 am | 6:18:16 pm | 6:47:06 pm | 11h 16m 3s | -2m 58s | 12:40:35 pm | 39.2° | 5:59:59 am | 7:20:23 pm | 5:26:30 am | 7:53:47 pm | 12h 45m 9s | 🌑 (0.4%) |
| Sun, Oct 11 | 6:34:31 am | 7:03:25 am | 6:16:32 pm | 6:45:24 pm | 11h 13m 7s | -2m 56s | 12:40:20 pm | 38.9° | 6:01:10 am | 7:18:42 pm | 5:27:42 am | 7:52:04 pm | 12h 48m 7s | 🌒 (3%) |
| Mon, Oct 12 | 6:35:42 am | 7:04:39 am | 6:14:49 pm | 6:43:43 pm | 11h 10m 10s | -2m 57s | 12:40:04 pm | 38.5° | 6:02:20 am | 7:17:01 pm | 5:28:55 am | 7:50:22 pm | 12h 51m 3s | 🌒 (7%) |
| Tue, Oct 13 | 6:36:54 am | 7:05:52 am | 6:13:06 pm | 6:42:03 pm | 11h 7m 14s | -2m 56s | 12:39:50 pm | 38.1° | 6:03:31 am | 7:15:21 pm | 5:30:07 am | 7:48:41 pm | 12h 54m 0s | 🌒 (13%) |
| Wed, Oct 14 | 6:38:05 am | 7:07:06 am | 6:11:25 pm | 6:40:23 pm | 11h 4m 19s | -2m 55s | 12:39:36 pm | 37.7° | 6:04:42 am | 7:13:43 pm | 5:31:18 am | 7:47:02 pm | 12h 56m 55s | 🌒 (20%) |
| Thu, Oct 15 | 6:39:17 am | 7:08:20 am | 6:09:44 pm | 6:38:44 pm | 11h 1m 24s | -2m 55s | 12:39:22 pm | 37.4° | 6:05:53 am | 7:12:05 pm | 5:32:30 am | 7:45:24 pm | 12h 59m 50s | 🌒 (28%) |
| Fri, Oct 16 | 6:40:29 am | 7:09:34 am | 6:08:04 pm | 6:37:07 pm | 10h 58m 30s | -2m 54s | 12:39:09 pm | 37° | 6:07:04 am | 7:10:29 pm | 5:33:42 am | 7:43:47 pm | 13h 2m 45s | 🌒 (37%) |
| Sat, Oct 17 | 6:41:41 am | 7:10:49 am | 6:06:24 pm | 6:35:30 pm | 10h 55m 35s | -2m 55s | 12:38:56 pm | 36.6° | 6:08:14 am | 7:08:54 pm | 5:34:53 am | 7:42:11 pm | 13h 5m 40s | 🌒 (46%) |
| Sun, Oct 18 | 6:42:53 am | 7:12:04 am | 6:04:46 pm | 6:33:55 pm | 10h 52m 42s | -2m 53s | 12:38:45 pm | 36.3° | 6:09:25 am | 7:07:20 pm | 5:36:04 am | 7:40:37 pm | 13h 8m 34s | 🌓 (56%) |
| Mon, Oct 19 | 6:44:06 am | 7:13:20 am | 6:03:08 pm | 6:32:20 pm | 10h 49m 48s | -2m 54s | 12:38:33 pm | 35.9° | 6:10:36 am | 7:05:47 pm | 5:37:15 am | 7:39:04 pm | 13h 11m 27s | 🌔 (65%) |
| Tue, Oct 20 | 6:45:19 am | 7:14:35 am | 6:01:32 pm | 6:30:47 pm | 10h 46m 57s | -2m 51s | 12:38:23 pm | 35.6° | 6:11:47 am | 7:04:15 pm | 5:38:26 am | 7:37:32 pm | 13h 14m 19s | 🌔 (74%) |
| Wed, Oct 21 | 6:46:31 am | 7:15:51 am | 5:59:56 pm | 6:29:14 pm | 10h 44m 5s | -2m 52s | 12:38:13 pm | 35.2° | 6:12:58 am | 7:02:45 pm | 5:39:37 am | 7:36:02 pm | 13h 17m 12s | 🌔 (82%) |
| Thu, Oct 22 | 6:47:45 am | 7:17:08 am | 5:58:22 pm | 6:27:43 pm | 10h 41m 14s | -2m 51s | 12:38:04 pm | 34.9° | 6:14:09 am | 7:01:16 pm | 5:40:48 am | 7:34:34 pm | 13h 20m 2s | 🌔 (90%) |
| Fri, Oct 23 | 6:48:58 am | 7:18:24 am | 5:56:49 pm | 6:26:13 pm | 10h 38m 25s | -2m 49s | 12:37:55 pm | 34.5° | 6:15:20 am | 6:59:48 pm | 5:41:59 am | 7:33:06 pm | 13h 22m 52s | 🌔 (95%) |
| Sat, Oct 24 | 6:50:11 am | 7:19:41 am | 5:55:16 pm | 6:24:45 pm | 10h 35m 35s | -2m 50s | 12:37:47 pm | 34.2° | 6:16:31 am | 6:58:22 pm | 5:43:09 am | 7:31:41 pm | 13h 25m 42s | 🌔 (99%) |
| Sun, Oct 25 | 6:51:25 am | 7:20:58 am | 5:53:45 pm | 6:23:17 pm | 10h 32m 47s | -2m 48s | 12:37:40 pm | 33.8° | 6:17:43 am | 6:56:57 pm | 5:44:20 am | 7:30:17 pm | 13h 28m 31s | 🌕 (99.9%) |
| Mon, Oct 26 | 6:52:39 am | 7:22:16 am | 5:52:16 pm | 6:21:51 pm | 10h 30m 0s | -2m 47s | 12:37:34 pm | 33.5° | 6:18:54 am | 6:55:33 pm | 5:45:30 am | 7:28:54 pm | 13h 31m 17s | 🌖 (98%) |
| Tue, Oct 27 | 6:53:52 am | 7:23:33 am | 5:50:47 pm | 6:20:26 pm | 10h 27m 14s | -2m 46s | 12:37:28 pm | 33.1° | 6:20:05 am | 6:54:11 pm | 5:46:40 am | 7:27:33 pm | 13h 34m 4s | 🌖 (94%) |
| Wed, Oct 28 | 6:55:07 am | 7:24:51 am | 5:49:20 pm | 6:19:03 pm | 10h 24m 29s | -2m 45s | 12:37:23 pm | 32.8° | 6:21:16 am | 6:52:51 pm | 5:47:51 am | 7:26:14 pm | 13h 36m 50s | 🌖 (87%) |
| Thu, Oct 29 | 6:56:21 am | 7:26:10 am | 5:47:54 pm | 6:17:41 pm | 10h 21m 44s | -2m 45s | 12:37:19 pm | 32.5° | 6:22:28 am | 6:51:32 pm | 5:49:01 am | 7:24:56 pm | 13h 39m 34s | 🌖 (78%) |
| Fri, Oct 30 | 6:57:35 am | 7:27:28 am | 5:46:29 pm | 6:16:21 pm | 10h 19m 1s | -2m 43s | 12:37:16 pm | 32.1° | 6:23:39 am | 6:50:15 pm | 5:50:11 am | 7:23:40 pm | 13h 42m 18s | 🌖 (68%) |
| Sat, Oct 31 | 6:58:50 am | 7:28:47 am | 5:45:06 pm | 6:15:02 pm | 10h 16m 19s | -2m 42s | 12:37:14 pm | 31.8° | 6:24:50 am | 6:48:59 pm | 5:51:21 am | 7:22:26 pm | 13h 44m 59s | 🌖 (57%) |
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Sunrise and Sunset photos in Keystone, SD
Enjoy this beautiful gallery of images of the sunset and sunrise at Keystone, SD.
Year distribution of sunrise and sunset times in Keystone, SD - 2026
The following graph shows sunrise and sunset times in Keystone, SD for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Keystone, SD.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Keystone, SD
In Keystone, SD, the earliest sunrise of 2026 is on June 14 at 5:10 am, while the latest sunrise is on October 31 at 7:28 am. The earliest sunset is on December 9 at 4:15 pm, and the latest sunset is on June 26 at 8:40 pm.
Keystone, SD gets 6h 34m more daylight on the longest day than on the shortest one (15h 28m versus 8h 53m). Averaged over the whole year, a day lasts 12h 13m.
Keystone, SD Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Keystone. Throughout the year, it slowly traces this figure-eight:
Move along the curve to read the Sun's altitude and azimuth for any day of the year in Keystone.
Over the year, the 12:00 Sun swings between just 22.6° above the horizon (around Dec 21) and 69.5° (around Jun 21) in Keystone. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma.
Detailed Analemma Chart
The technical chart below plots one dot per day, labels the first day of each month, marks the solstices, equinoxes, perihelion and aphelion, and draws the noon altitude of the equinoxes (90° minus your latitude) together with its ±23.4° seasonal limits.
Why does the figure look wider here than in the sky view above?
Both draw the same data, but with different conventions. The sky view uses the same scale on both axes, so it shows the analemma with its true proportions, as a camera would capture it: about 47° tall and only a few degrees wide. This chart, like most technical analemma diagrams, stretches each axis independently to fill the plot, expanding the narrow azimuth range several times so its day-to-day variation can actually be read. Also, azimuth is not sky distance: near the zenith, one degree of azimuth spans much less than one degree across the sky, which further widens the figure in this representation.
Places near Keystone, SD
These nearby towns and cities have almost the same sunrise and sunset times as Keystone, SD — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Hill City 8 miCuster State Park 11 miHermosa 12 miCuster 13 miRapid City 16 miFairburn 18 miSummerset 21 miNemo 21 mi