M46 Colstrip night times
Colstrip, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:46 PMto6:56 AM
Sunset to sunrise. Lights on.
2346Z to 1356Z
Night logging
§ 1.15:18 PMto6:24 AM
Civil twilight. Log it as night.
0018Z to 1324Z
Night currency
§ 61.57(b)5:46 PMto5:56 AM
One hour after sunset. Landings count.
0046Z to 1256Z
Evenings at M46
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:53 PM | 5:24 PM | 5:53 PM |
| Nov 15MST | 4:35 PM | 5:08 PM | 5:35 PM |
| Dec 1MST | 4:24 PM | 4:57 PM | 5:24 PM |
| Dec 15MST | 4:23 PM | 4:57 PM | 5:23 PM |
| Jan 1MST | 4:33 PM | 5:07 PM | 5:33 PM |
| Jan 15MST | 4:49 PM | 5:22 PM | 5:49 PM |
| Feb 1MST | 5:13 PM | 5:44 PM | 6:13 PM |
| Feb 15MST | 5:33 PM | 6:04 PM | 6:33 PM |
| Mar 1MST | 5:53 PM | 6:23 PM | 6:53 PM |
| Mar 15MDT | 7:13 PM | 7:42 PM | 8:13 PM |
| Apr 1MDT | 7:35 PM | 8:05 PM | 8:35 PM |
| Apr 15MDT | 7:54 PM | 8:25 PM | 8:54 PM |
| May 1MDT | 8:14 PM | 8:48 PM | 9:14 PM |
| May 15MDT | 8:32 PM | 9:07 PM | 9:32 PM |
| Jun 1MDT | 8:50 PM | 9:27 PM | 9:50 PM |
| Jun 15MDT | 8:59 PM | 9:37 PM | 9:59 PM |
| Jul 1MDT | 9:01 PM | 9:39 PM | 10:01 PM |
| Jul 15MDT | 8:54 PM | 9:31 PM | 9:54 PM |
| Aug 1MDT | 8:36 PM | 9:10 PM | 9:36 PM |
| Aug 15MDT | 8:15 PM | 8:48 PM | 9:15 PM |
| Sep 1MDT | 7:45 PM | 8:16 PM | 8:45 PM |
| Sep 15MDT | 7:18 PM | 7:48 PM | 8:18 PM |
| Oct 1MDT | 6:47 PM | 7:17 PM | 7:47 PM |
| Oct 15MDT | 6:21 PM | 6:51 PM | 7:21 PM |
Mornings at M46
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 5:47 AM | 6:16 AM | 6:47 AM |
| Nov 15MST | 6:07 AM | 6:35 AM | 7:07 AM |
| Dec 1MST | 6:28 AM | 6:54 AM | 7:28 AM |
| Dec 15MST | 6:42 AM | 7:07 AM | 7:42 AM |
| Jan 1MST | 6:48 AM | 7:14 AM | 7:48 AM |
| Jan 15MST | 6:44 AM | 7:11 AM | 7:44 AM |
| Feb 1MST | 6:29 AM | 6:57 AM | 7:29 AM |
| Feb 15MST | 6:09 AM | 6:39 AM | 7:09 AM |
| Mar 1MST | 5:46 AM | 6:16 AM | 6:46 AM |
| Mar 15MDT | 6:20 AM | 6:50 AM | 7:20 AM |
| Apr 1MDT | 5:47 AM | 6:17 AM | 6:47 AM |
| Apr 15MDT | 5:21 AM | 5:50 AM | 6:21 AM |
| May 1MDT | 4:54 AM | 5:21 AM | 5:54 AM |
| May 15MDT | 4:35 AM | 5:00 AM | 5:35 AM |
| Jun 1MDT | 4:20 AM | 4:43 AM | 5:20 AM |
| Jun 15MDT | 4:16 AM | 4:38 AM | 5:16 AM |
| Jul 1MDT | 4:21 AM | 4:42 AM | 5:21 AM |
| Jul 15MDT | 4:31 AM | 4:55 AM | 5:31 AM |
| Aug 1MDT | 4:50 AM | 5:15 AM | 5:50 AM |
| Aug 15MDT | 5:07 AM | 5:34 AM | 6:07 AM |
| Sep 1MDT | 5:28 AM | 5:57 AM | 6:28 AM |
| Sep 15MDT | 5:45 AM | 6:15 AM | 6:45 AM |
| Oct 1MDT | 6:05 AM | 6:35 AM | 7:05 AM |
| Oct 15MDT | 6:23 AM | 6:53 AM | 7:23 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT PAPI 06 & 24 - CTAF; MIRL RWY 06/24 PRESET LOW INTST DUSK-0100; AFT 0100 ACTVT - CTAF.
Runway 06/24
5,100 × 75 ft · Asphalt
Frequencies
Night at M46, in short
When can I log night time at M46?
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 5:18 PM to 6:24 AM MST.
When do landings at M46 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 5:46 PM to 5:56 AM MST.
When are position lights required at M46?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:46 PM to 6:56 AM MST.
Nearby airports
- 3U4 St Labre Mission Ashland, MT · 23 nm
- 1S3 Tillitt Field Forsyth, MT · 25 nm
- 6U7 Hysham Hysham, MT · 33 nm
- 00U Big Horn County Hardin, MT · 40 nm
- 1M6 Stevens Ranch Ashland, MT · 41 nm
- KMLS Frank Wiley Field Miles City, MT · 49 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.