KSPF Black Hills-Clyde Ice Field night times
Spearfish, SD · FAA SPF
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:37 PMto6:41 AM
Sunset to sunrise. Lights on.
2337Z to 1341Z
Night logging
§ 1.15:08 PMto6:10 AM
Civil twilight. Log it as night.
0008Z to 1310Z
Night currency
§ 61.57(b)5:37 PMto5:41 AM
One hour after sunset. Landings count.
0037Z to 1241Z
Evenings at KSPF
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:44 PM | 5:14 PM | 5:44 PM |
| Nov 15MST | 4:27 PM | 4:59 PM | 5:27 PM |
| Dec 1MST | 4:17 PM | 4:49 PM | 5:17 PM |
| Dec 15MST | 4:16 PM | 4:49 PM | 5:16 PM |
| Jan 1MST | 4:26 PM | 4:59 PM | 5:26 PM |
| Jan 15MST | 4:41 PM | 5:14 PM | 5:41 PM |
| Feb 1MST | 5:04 PM | 5:35 PM | 6:04 PM |
| Feb 15MST | 5:24 PM | 5:54 PM | 6:24 PM |
| Mar 1MST | 5:43 PM | 6:12 PM | 6:43 PM |
| Mar 15MDT | 7:01 PM | 7:30 PM | 8:01 PM |
| Apr 1MDT | 7:22 PM | 7:52 PM | 8:22 PM |
| Apr 15MDT | 7:40 PM | 8:10 PM | 8:40 PM |
| May 1MDT | 7:59 PM | 8:32 PM | 8:59 PM |
| May 15MDT | 8:16 PM | 8:50 PM | 9:16 PM |
| Jun 1MDT | 8:33 PM | 9:09 PM | 9:33 PM |
| Jun 15MDT | 8:42 PM | 9:18 PM | 9:42 PM |
| Jul 1MDT | 8:44 PM | 9:20 PM | 9:44 PM |
| Jul 15MDT | 8:37 PM | 9:13 PM | 9:37 PM |
| Aug 1MDT | 8:20 PM | 8:54 PM | 9:20 PM |
| Aug 15MDT | 8:01 PM | 8:32 PM | 9:01 PM |
| Sep 1MDT | 7:32 PM | 8:02 PM | 8:32 PM |
| Sep 15MDT | 7:06 PM | 7:35 PM | 8:06 PM |
| Oct 1MDT | 6:36 PM | 7:05 PM | 7:36 PM |
| Oct 15MDT | 6:11 PM | 6:40 PM | 7:11 PM |
Mornings at KSPF
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 5:33 AM | 6:02 AM | 6:33 AM |
| Nov 15MST | 5:52 AM | 6:20 AM | 6:52 AM |
| Dec 1MST | 6:12 AM | 6:39 AM | 7:12 AM |
| Dec 15MST | 6:25 AM | 6:51 AM | 7:25 AM |
| Jan 1MST | 6:32 AM | 6:58 AM | 7:32 AM |
| Jan 15MST | 6:28 AM | 6:56 AM | 7:28 AM |
| Feb 1MST | 6:14 AM | 6:43 AM | 7:14 AM |
| Feb 15MST | 5:55 AM | 6:25 AM | 6:55 AM |
| Mar 1MST | 5:33 AM | 6:03 AM | 6:33 AM |
| Mar 15MDT | 6:08 AM | 6:39 AM | 7:08 AM |
| Apr 1MDT | 5:36 AM | 6:07 AM | 6:36 AM |
| Apr 15MDT | 5:11 AM | 5:41 AM | 6:11 AM |
| May 1MDT | 4:46 AM | 5:14 AM | 5:46 AM |
| May 15MDT | 4:28 AM | 4:54 AM | 5:28 AM |
| Jun 1MDT | 4:14 AM | 4:38 AM | 5:14 AM |
| Jun 15MDT | 4:10 AM | 4:33 AM | 5:10 AM |
| Jul 1MDT | 4:14 AM | 4:38 AM | 5:14 AM |
| Jul 15MDT | 4:25 AM | 4:49 AM | 5:25 AM |
| Aug 1MDT | 4:42 AM | 5:09 AM | 5:42 AM |
| Aug 15MDT | 4:58 AM | 5:26 AM | 5:58 AM |
| Sep 1MDT | 5:18 AM | 5:48 AM | 6:18 AM |
| Sep 15MDT | 5:34 AM | 6:05 AM | 6:34 AM |
| Oct 1MDT | 5:53 AM | 6:24 AM | 6:53 AM |
| Oct 15MDT | 6:10 AM | 6:41 AM | 7:10 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT MIRL RY 13/31; PAPI RYS 13 & 31 AND TWY A LGTS- CTAF.
Runway 04/22
1,995 × 120 ft · Turf
Runway 08/26
4,003 × 100 ft · Turf
Runway 13/31
6,401 × 75 ft · Asphalt
Frequencies
Night at KSPF, in short
When can I log night time at KSPF?
From the end of evening civil twilight to the beginning of morning civil twilight, when the sun is 6° below the horizon (14 CFR 1.1). On the night of Nov 6, 2026, that was 5:08 PM to 6:10 AM MST.
When do landings at KSPF count for night currency?
From one hour after sunset to one hour before sunrise. To carry passengers at night you need 3 takeoffs and 3 full-stop landings in that period within the last 90 days (14 CFR 61.57(b)). On the night of Nov 6, 2026, that was 5:37 PM to 5:41 AM MST.
When are position lights required at KSPF?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:37 PM to 6:41 AM MST.
Nearby airports
- KEFC Belle Fourche Municipal Belle Fourche, SD · 16 nm
- 49B Sturgis Municipal Sturgis, SD · 18 nm
- W43 Hulett Municipal Hulett, WY · 35 nm
- KRAP Rapid City Regional Rapid City, SD · 41 nm
- KECS Mondell Field Newcastle, WY · 42 nm
- 83V Upton Municipal Upton, WY · 44 nm
Times are worked out from the sun's position for a sea-level horizon, rounded to the minute. Airport data from the FAA NASR cycle of Oct 29, 2026.