3U4 St Labre Mission night times
Ashland, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:45 PMto6:54 AM
Sunset to sunrise. Lights on.
2345Z to 1354Z
Night logging
§ 1.15:16 PMto6:22 AM
Civil twilight. Log it as night.
0016Z to 1322Z
Night currency
§ 61.57(b)5:45 PMto5:54 AM
One hour after sunset. Landings count.
0045Z to 1254Z
Evenings at 3U4
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:52 PM | 5:23 PM | 5:52 PM |
| Nov 15MST | 4:34 PM | 5:06 PM | 5:34 PM |
| Dec 1MST | 4:23 PM | 4:56 PM | 5:23 PM |
| Dec 15MST | 4:22 PM | 4:56 PM | 5:22 PM |
| Jan 1MST | 4:32 PM | 5:06 PM | 5:32 PM |
| Jan 15MST | 4:48 PM | 5:21 PM | 5:48 PM |
| Feb 1MST | 5:11 PM | 5:43 PM | 6:11 PM |
| Feb 15MST | 5:32 PM | 6:02 PM | 6:32 PM |
| Mar 1MST | 5:52 PM | 6:22 PM | 6:52 PM |
| Mar 15MDT | 7:11 PM | 7:40 PM | 8:11 PM |
| Apr 1MDT | 7:33 PM | 8:03 PM | 8:33 PM |
| Apr 15MDT | 7:51 PM | 8:23 PM | 8:51 PM |
| May 1MDT | 8:12 PM | 8:45 PM | 9:12 PM |
| May 15MDT | 8:29 PM | 9:04 PM | 9:29 PM |
| Jun 1MDT | 8:47 PM | 9:24 PM | 9:47 PM |
| Jun 15MDT | 8:56 PM | 9:34 PM | 9:56 PM |
| Jul 1MDT | 8:58 PM | 9:36 PM | 9:58 PM |
| Jul 15MDT | 8:51 PM | 9:28 PM | 9:51 PM |
| Aug 1MDT | 8:34 PM | 9:08 PM | 9:34 PM |
| Aug 15MDT | 8:13 PM | 8:45 PM | 9:13 PM |
| Sep 1MDT | 7:43 PM | 8:14 PM | 8:43 PM |
| Sep 15MDT | 7:16 PM | 7:46 PM | 8:16 PM |
| Oct 1MDT | 6:45 PM | 7:15 PM | 7:45 PM |
| Oct 15MDT | 6:20 PM | 6:49 PM | 7:20 PM |
Mornings at 3U4
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 5:45 AM | 6:14 AM | 6:45 AM |
| Nov 15MST | 6:05 AM | 6:32 AM | 7:05 AM |
| Dec 1MST | 6:25 AM | 6:52 AM | 7:25 AM |
| Dec 15MST | 6:39 AM | 7:05 AM | 7:39 AM |
| Jan 1MST | 6:46 AM | 7:12 AM | 7:46 AM |
| Jan 15MST | 6:42 AM | 7:09 AM | 7:42 AM |
| Feb 1MST | 6:26 AM | 6:55 AM | 7:26 AM |
| Feb 15MST | 6:07 AM | 6:37 AM | 7:07 AM |
| Mar 1MST | 5:44 AM | 6:14 AM | 6:44 AM |
| Mar 15MDT | 6:18 AM | 6:48 AM | 7:18 AM |
| Apr 1MDT | 5:45 AM | 6:16 AM | 6:45 AM |
| Apr 15MDT | 5:20 AM | 5:49 AM | 6:20 AM |
| May 1MDT | 4:53 AM | 5:20 AM | 5:53 AM |
| May 15MDT | 4:34 AM | 5:00 AM | 5:34 AM |
| Jun 1MDT | 4:19 AM | 4:43 AM | 5:19 AM |
| Jun 15MDT | 4:15 AM | 4:37 AM | 5:15 AM |
| Jul 1MDT | 4:20 AM | 4:42 AM | 5:20 AM |
| Jul 15MDT | 4:31 AM | 4:54 AM | 5:31 AM |
| Aug 1MDT | 4:49 AM | 5:14 AM | 5:49 AM |
| Aug 15MDT | 5:05 AM | 5:33 AM | 6:05 AM |
| Sep 1MDT | 5:26 AM | 5:56 AM | 6:26 AM |
| Sep 15MDT | 5:43 AM | 6:14 AM | 6:43 AM |
| Oct 1MDT | 6:03 AM | 6:34 AM | 7:03 AM |
| Oct 15MDT | 6:21 AM | 6:51 AM | 7:21 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
100' LIGHTED ANTENNA 1/2 MILE SW OF ARPT ON HILL.
Runway 13/31
3,830 × 95 ft · Gravel
Frequencies
Night at 3U4, in short
When can I log night time at 3U4?
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 5:16 PM to 6:22 AM MST.
When do landings at 3U4 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 5:45 PM to 5:54 AM MST.
When are position lights required at 3U4?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:45 PM to 6:54 AM MST.
Nearby airports
- 1M6 Stevens Ranch Ashland, MT · 20 nm
- M46 Colstrip Colstrip, MT · 23 nm
- 00F Broadus Broadus, MT · 35 nm
- 1S3 Tillitt Field Forsyth, MT · 42 nm
- KMLS Frank Wiley Field Miles City, MT · 52 nm
- 6U7 Hysham Hysham, MT · 56 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.