48S Harlem night times
Harlem, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:47 PMto7:11 AM
Sunset to sunrise. Lights on.
2347Z to 1411Z
Night logging
§ 1.15:21 PMto6:38 AM
Civil twilight. Log it as night.
0021Z to 1338Z
Night currency
§ 61.57(b)5:47 PMto6:11 AM
One hour after sunset. Landings count.
0047Z to 1311Z
Evenings at 48S
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:55 PM | 5:28 PM | 5:55 PM |
| Nov 15MST | 4:35 PM | 5:10 PM | 5:35 PM |
| Dec 1MST | 4:22 PM | 4:58 PM | 5:22 PM |
| Dec 15MST | 4:20 PM | 4:57 PM | 5:20 PM |
| Jan 1MST | 4:30 PM | 5:07 PM | 5:30 PM |
| Jan 15MST | 4:47 PM | 5:23 PM | 5:47 PM |
| Feb 1MST | 5:14 PM | 5:47 PM | 6:14 PM |
| Feb 15MST | 5:36 PM | 6:09 PM | 6:36 PM |
| Mar 1MST | 5:59 PM | 6:30 PM | 6:59 PM |
| Mar 15MDT | 7:20 PM | 7:52 PM | 8:20 PM |
| Apr 1MDT | 7:46 PM | 8:18 PM | 8:46 PM |
| Apr 15MDT | 8:06 PM | 8:39 PM | 9:06 PM |
| May 1MDT | 8:30 PM | 9:05 PM | 9:30 PM |
| May 15MDT | 8:49 PM | 9:27 PM | 9:49 PM |
| Jun 1MDT | 9:09 PM | 9:50 PM | 10:09 PM |
| Jun 15MDT | 9:19 PM | 10:01 PM | 10:19 PM |
| Jul 1MDT | 9:21 PM | 10:02 PM | 10:21 PM |
| Jul 15MDT | 9:13 PM | 9:53 PM | 10:13 PM |
| Aug 1MDT | 8:53 PM | 9:30 PM | 9:53 PM |
| Aug 15MDT | 8:30 PM | 9:04 PM | 9:30 PM |
| Sep 1MDT | 7:57 PM | 8:29 PM | 8:57 PM |
| Sep 15MDT | 7:28 PM | 7:59 PM | 8:28 PM |
| Oct 1MDT | 6:54 PM | 7:25 PM | 7:54 PM |
| Oct 15MDT | 6:26 PM | 6:58 PM | 7:26 PM |
Mornings at 48S
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:02 AM | 6:29 AM | 7:02 AM |
| Nov 15MST | 6:24 AM | 6:49 AM | 7:24 AM |
| Dec 1MST | 6:46 AM | 7:10 AM | 7:46 AM |
| Dec 15MST | 7:01 AM | 7:24 AM | 8:01 AM |
| Jan 1MST | 7:07 AM | 7:31 AM | 8:07 AM |
| Jan 15MST | 7:02 AM | 7:27 AM | 8:02 AM |
| Feb 1MST | 6:44 AM | 7:11 AM | 7:44 AM |
| Feb 15MST | 6:23 AM | 6:50 AM | 7:23 AM |
| Mar 1MST | 5:57 AM | 6:25 AM | 6:57 AM |
| Mar 15MDT | 6:29 AM | 6:57 AM | 7:29 AM |
| Apr 1MDT | 5:53 AM | 6:21 AM | 6:53 AM |
| Apr 15MDT | 5:25 AM | 5:52 AM | 6:25 AM |
| May 1MDT | 4:56 AM | 5:20 AM | 5:56 AM |
| May 15MDT | 4:35 AM | 4:57 AM | 5:35 AM |
| Jun 1MDT | 4:17 AM | 4:37 AM | 5:17 AM |
| Jun 15MDT | 4:12 AM | 4:30 AM | 5:12 AM |
| Jul 1MDT | 4:17 AM | 4:35 AM | 5:17 AM |
| Jul 15MDT | 4:29 AM | 4:49 AM | 5:29 AM |
| Aug 1MDT | 4:49 AM | 5:12 AM | 5:49 AM |
| Aug 15MDT | 5:08 AM | 5:34 AM | 6:08 AM |
| Sep 1MDT | 5:32 AM | 6:00 AM | 6:32 AM |
| Sep 15MDT | 5:52 AM | 6:20 AM | 6:52 AM |
| Oct 1MDT | 6:14 AM | 6:43 AM | 7:14 AM |
| Oct 15MDT | 6:35 AM | 7:03 AM | 7:35 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT MIRL RY 11/29 & PAPI RY 29 - CTAF.
Runway 11/29
4,100 × 75 ft · Asphalt
Runway 15/33
1,933 × 120 ft · Turf
Frequencies
Night at 48S, in short
When can I log night time at 48S?
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 5:21 PM to 6:38 AM MST.
When do landings at 48S 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 5:47 PM to 6:11 AM MST.
When are position lights required at 48S?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:47 PM to 7:11 AM MST.
Nearby airports
- 6U6 Hogeland Hogeland, MT · 18 nm
- S71 Edgar G Obie Chinook, MT · 19 nm
- 9U0 Turner Turner, MT · 22 nm
- M75 Malta Malta, MT · 36 nm
- CW0 Cow Creek Winifred, MT · 38 nm
- KHVR Havre City-County Havre, MT · 39 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.