M42 Russian Flat night times
Russian Flat, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:59 PMto7:13 AM
Sunset to sunrise. Lights on.
2359Z to 1413Z
Night logging
§ 1.15:31 PMto6:41 AM
Civil twilight. Log it as night.
0031Z to 1341Z
Night currency
§ 61.57(b)5:59 PMto6:13 AM
One hour after sunset. Landings count.
0059Z to 1313Z
Evenings at M42
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:06 PM | 5:37 PM | 6:06 PM |
| Nov 15MST | 4:48 PM | 5:21 PM | 5:48 PM |
| Dec 1MST | 4:35 PM | 5:10 PM | 5:35 PM |
| Dec 15MST | 4:34 PM | 5:09 PM | 5:34 PM |
| Jan 1MST | 4:44 PM | 5:19 PM | 5:44 PM |
| Jan 15MST | 5:00 PM | 5:35 PM | 6:00 PM |
| Feb 1MST | 5:25 PM | 5:58 PM | 6:25 PM |
| Feb 15MST | 5:46 PM | 6:18 PM | 6:46 PM |
| Mar 1MST | 6:07 PM | 6:38 PM | 7:07 PM |
| Mar 15MDT | 7:27 PM | 7:57 PM | 8:27 PM |
| Apr 1MDT | 7:51 PM | 8:21 PM | 8:51 PM |
| Apr 15MDT | 8:10 PM | 8:42 PM | 9:10 PM |
| May 1MDT | 8:31 PM | 9:05 PM | 9:31 PM |
| May 15MDT | 8:50 PM | 9:25 PM | 9:50 PM |
| Jun 1MDT | 9:08 PM | 9:46 PM | 10:08 PM |
| Jun 15MDT | 9:17 PM | 9:57 PM | 10:17 PM |
| Jul 1MDT | 9:19 PM | 9:58 PM | 10:19 PM |
| Jul 15MDT | 9:12 PM | 9:50 PM | 10:12 PM |
| Aug 1MDT | 8:53 PM | 9:28 PM | 9:53 PM |
| Aug 15MDT | 8:32 PM | 9:05 PM | 9:32 PM |
| Sep 1MDT | 8:01 PM | 8:32 PM | 9:01 PM |
| Sep 15MDT | 7:33 PM | 8:04 PM | 8:33 PM |
| Oct 1MDT | 7:02 PM | 7:32 PM | 8:02 PM |
| Oct 15MDT | 6:35 PM | 7:05 PM | 7:35 PM |
Mornings at M42
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:04 AM | 6:32 AM | 7:04 AM |
| Nov 15MST | 6:24 AM | 6:52 AM | 7:24 AM |
| Dec 1MST | 6:46 AM | 7:11 AM | 7:46 AM |
| Dec 15MST | 7:00 AM | 7:25 AM | 8:00 AM |
| Jan 1MST | 7:06 AM | 7:31 AM | 8:06 AM |
| Jan 15MST | 7:02 AM | 7:28 AM | 8:02 AM |
| Feb 1MST | 6:46 AM | 7:14 AM | 7:46 AM |
| Feb 15MST | 6:26 AM | 6:55 AM | 7:26 AM |
| Mar 1MST | 6:01 AM | 6:31 AM | 7:01 AM |
| Mar 15MDT | 6:35 AM | 7:05 AM | 7:35 AM |
| Apr 1MDT | 6:01 AM | 6:31 AM | 7:01 AM |
| Apr 15MDT | 5:34 AM | 6:03 AM | 6:34 AM |
| May 1MDT | 5:07 AM | 5:33 AM | 6:07 AM |
| May 15MDT | 4:47 AM | 5:12 AM | 5:47 AM |
| Jun 1MDT | 4:32 AM | 4:54 AM | 5:32 AM |
| Jun 15MDT | 4:27 AM | 4:48 AM | 5:27 AM |
| Jul 1MDT | 4:32 AM | 4:53 AM | 5:32 AM |
| Jul 15MDT | 4:43 AM | 5:05 AM | 5:43 AM |
| Aug 1MDT | 5:02 AM | 5:27 AM | 6:02 AM |
| Aug 15MDT | 5:20 AM | 5:46 AM | 6:20 AM |
| Sep 1MDT | 5:41 AM | 6:10 AM | 6:41 AM |
| Sep 15MDT | 5:59 AM | 6:29 AM | 6:59 AM |
| Oct 1MDT | 6:20 AM | 6:50 AM | 7:20 AM |
| Oct 15MDT | 6:39 AM | 7:09 AM | 7:39 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 07/25
3,000 × 65 ft · Turf
Frequencies
Night at M42, in short
When can I log night time at M42?
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 5:31 PM to 6:41 AM MST.
When do landings at M42 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 5:59 PM to 6:13 AM MST.
When are position lights required at M42?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:59 PM to 7:13 AM MST.
Nearby airports
- 7S6 White Sulphur Springs White Sulphur Springs, MT · 25 nm
- S64 Stanford/Biggerstaff Field Stanford, MT · 27 nm
- KHWQ Wheatland County At Harlowton Harlowton, MT · 29 nm
- 5U0 Denton Denton, MT · 41 nm
- 9U1 Wilsall Wilsall, MT · 42 nm
- KLWT Lewistown Municipal Lewistown, MT · 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.