3U7 Benchmark night times
Augusta, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2095:07 PMto7:25 AM
Sunset to sunrise. Lights on.
0007Z to 1425Z
Night logging
§ 1.15:39 PMto6:52 AM
Civil twilight. Log it as night.
0039Z to 1352Z
Night currency
§ 61.57(b)6:07 PMto6:25 AM
One hour after sunset. Landings count.
0107Z to 1325Z
Evenings at 3U7
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:14 PM | 5:46 PM | 6:14 PM |
| Nov 15MST | 4:55 PM | 5:29 PM | 5:55 PM |
| Dec 1MST | 4:42 PM | 5:18 PM | 5:42 PM |
| Dec 15MST | 4:41 PM | 5:17 PM | 5:41 PM |
| Jan 1MST | 4:51 PM | 5:27 PM | 5:51 PM |
| Jan 15MST | 5:08 PM | 5:42 PM | 6:08 PM |
| Feb 1MST | 5:33 PM | 6:06 PM | 6:33 PM |
| Feb 15MST | 5:55 PM | 6:27 PM | 6:55 PM |
| Mar 1MST | 6:16 PM | 6:47 PM | 7:16 PM |
| Mar 15MDT | 7:37 PM | 8:08 PM | 8:37 PM |
| Apr 1MDT | 8:01 PM | 8:32 PM | 9:01 PM |
| Apr 15MDT | 8:21 PM | 8:53 PM | 9:21 PM |
| May 1MDT | 8:43 PM | 9:18 PM | 9:43 PM |
| May 15MDT | 9:02 PM | 9:39 PM | 10:02 PM |
| Jun 1MDT | 9:21 PM | 10:00 PM | 10:21 PM |
| Jun 15MDT | 9:30 PM | 10:11 PM | 10:30 PM |
| Jul 1MDT | 9:32 PM | 10:12 PM | 10:32 PM |
| Jul 15MDT | 9:25 PM | 10:03 PM | 10:25 PM |
| Aug 1MDT | 9:06 PM | 9:41 PM | 10:06 PM |
| Aug 15MDT | 8:44 PM | 9:17 PM | 9:44 PM |
| Sep 1MDT | 8:12 PM | 8:44 PM | 9:12 PM |
| Sep 15MDT | 7:44 PM | 8:15 PM | 8:44 PM |
| Oct 1MDT | 7:11 PM | 7:42 PM | 8:11 PM |
| Oct 15MDT | 6:44 PM | 7:15 PM | 7:44 PM |
Mornings at 3U7
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:16 AM | 6:43 AM | 7:16 AM |
| Nov 15MST | 6:37 AM | 7:03 AM | 7:37 AM |
| Dec 1MST | 6:59 AM | 7:23 AM | 7:59 AM |
| Dec 15MST | 7:13 AM | 7:37 AM | 8:13 AM |
| Jan 1MST | 7:19 AM | 7:44 AM | 8:19 AM |
| Jan 15MST | 7:15 AM | 7:40 AM | 8:15 AM |
| Feb 1MST | 6:58 AM | 7:25 AM | 7:58 AM |
| Feb 15MST | 6:37 AM | 7:05 AM | 7:37 AM |
| Mar 1MST | 6:12 AM | 6:41 AM | 7:12 AM |
| Mar 15MDT | 6:45 AM | 7:14 AM | 7:45 AM |
| Apr 1MDT | 6:10 AM | 6:39 AM | 7:10 AM |
| Apr 15MDT | 5:43 AM | 6:11 AM | 6:43 AM |
| May 1MDT | 5:15 AM | 5:41 AM | 6:15 AM |
| May 15MDT | 4:55 AM | 5:18 AM | 5:55 AM |
| Jun 1MDT | 4:38 AM | 4:59 AM | 5:38 AM |
| Jun 15MDT | 4:34 AM | 4:53 AM | 5:34 AM |
| Jul 1MDT | 4:38 AM | 4:58 AM | 5:38 AM |
| Jul 15MDT | 4:50 AM | 5:11 AM | 5:50 AM |
| Aug 1MDT | 5:09 AM | 5:33 AM | 6:09 AM |
| Aug 15MDT | 5:28 AM | 5:54 AM | 6:28 AM |
| Sep 1MDT | 5:50 AM | 6:18 AM | 6:50 AM |
| Sep 15MDT | 6:09 AM | 6:38 AM | 7:09 AM |
| Oct 1MDT | 6:30 AM | 7:00 AM | 7:30 AM |
| Oct 15MDT | 6:50 AM | 7:19 AM | 7:50 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
3 WDI; BOTH ENDS & MIDPT.
Runway 12/30
6,000 × 100 ft · Asphalt
Frequencies
Night at 3U7, in short
When can I log night time at 3U7?
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 5:39 PM to 6:52 AM MST.
When do landings at 3U7 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 6:07 PM to 6:25 AM MST.
When are position lights required at 3U7?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:07 PM to 7:25 AM MST.
Nearby airports
- 3U5 Augusta Augusta, MT · 20 nm
- 23S Seeley Lake Seeley Lake, MT · 29 nm
- M35 Lindey's Landing West Seeley Lake, MT · 31 nm
- 0S1 Meadow Creek USFS Meadow Creek, MT · 31 nm
- S69 Lincoln Lincoln, MT · 33 nm
- S04 Condon USFS Condon, MT · 35 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.