L51 Heller Farm night times
Winifred, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:50 PMto7:09 AM
Sunset to sunrise. Lights on.
2350Z to 1409Z
Night logging
§ 1.15:23 PMto6:36 AM
Civil twilight. Log it as night.
0023Z to 1336Z
Night currency
§ 61.57(b)5:50 PMto6:09 AM
One hour after sunset. Landings count.
0050Z to 1309Z
Evenings at L51
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:57 PM | 5:30 PM | 5:57 PM |
| Nov 15MST | 4:38 PM | 5:12 PM | 5:38 PM |
| Dec 1MST | 4:26 PM | 5:01 PM | 5:26 PM |
| Dec 15MST | 4:24 PM | 5:00 PM | 5:24 PM |
| Jan 1MST | 4:34 PM | 5:10 PM | 5:34 PM |
| Jan 15MST | 4:51 PM | 5:26 PM | 5:51 PM |
| Feb 1MST | 5:16 PM | 5:49 PM | 6:16 PM |
| Feb 15MST | 5:38 PM | 6:10 PM | 6:38 PM |
| Mar 1MST | 6:00 PM | 6:31 PM | 7:00 PM |
| Mar 15MDT | 7:21 PM | 7:52 PM | 8:21 PM |
| Apr 1MDT | 7:45 PM | 8:17 PM | 8:45 PM |
| Apr 15MDT | 8:05 PM | 8:38 PM | 9:05 PM |
| May 1MDT | 8:28 PM | 9:03 PM | 9:28 PM |
| May 15MDT | 8:47 PM | 9:24 PM | 9:47 PM |
| Jun 1MDT | 9:06 PM | 9:45 PM | 10:06 PM |
| Jun 15MDT | 9:16 PM | 9:56 PM | 10:16 PM |
| Jul 1MDT | 9:17 PM | 9:58 PM | 10:17 PM |
| Jul 15MDT | 9:10 PM | 9:48 PM | 10:10 PM |
| Aug 1MDT | 8:50 PM | 9:26 PM | 9:50 PM |
| Aug 15MDT | 8:28 PM | 9:02 PM | 9:28 PM |
| Sep 1MDT | 7:56 PM | 8:28 PM | 8:56 PM |
| Sep 15MDT | 7:28 PM | 7:59 PM | 8:28 PM |
| Oct 1MDT | 6:55 PM | 7:26 PM | 7:55 PM |
| Oct 15MDT | 6:27 PM | 6:58 PM | 7:27 PM |
Mornings at L51
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:00 AM | 6:28 AM | 7:00 AM |
| Nov 15MST | 6:21 AM | 6:48 AM | 7:21 AM |
| Dec 1MST | 6:43 AM | 7:08 AM | 7:43 AM |
| Dec 15MST | 6:58 AM | 7:22 AM | 7:58 AM |
| Jan 1MST | 7:04 AM | 7:28 AM | 8:04 AM |
| Jan 15MST | 6:59 AM | 7:25 AM | 7:59 AM |
| Feb 1MST | 6:42 AM | 7:09 AM | 7:42 AM |
| Feb 15MST | 6:21 AM | 6:50 AM | 7:21 AM |
| Mar 1MST | 5:56 AM | 6:25 AM | 6:56 AM |
| Mar 15MDT | 6:29 AM | 6:58 AM | 7:29 AM |
| Apr 1MDT | 5:54 AM | 6:23 AM | 6:54 AM |
| Apr 15MDT | 5:27 AM | 5:54 AM | 6:27 AM |
| May 1MDT | 4:58 AM | 5:24 AM | 5:58 AM |
| May 15MDT | 4:38 AM | 5:01 AM | 5:38 AM |
| Jun 1MDT | 4:21 AM | 4:42 AM | 5:21 AM |
| Jun 15MDT | 4:17 AM | 4:36 AM | 5:17 AM |
| Jul 1MDT | 4:21 AM | 4:41 AM | 5:21 AM |
| Jul 15MDT | 4:33 AM | 4:54 AM | 5:33 AM |
| Aug 1MDT | 4:53 AM | 5:16 AM | 5:53 AM |
| Aug 15MDT | 5:11 AM | 5:37 AM | 6:11 AM |
| Sep 1MDT | 5:34 AM | 6:02 AM | 6:34 AM |
| Sep 15MDT | 5:53 AM | 6:22 AM | 6:53 AM |
| Oct 1MDT | 6:15 AM | 6:44 AM | 7:15 AM |
| Oct 15MDT | 6:34 AM | 7:03 AM | 7:34 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 11/29
2,998 × 80 ft · Turf
Frequencies
Night at L51, in short
When can I log night time at L51?
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 5:23 PM to 6:36 AM MST.
When do landings at L51 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 5:50 PM to 6:09 AM MST.
When are position lights required at L51?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:50 PM to 7:09 AM MST.
Nearby airports
- MT3 Knox Ridge Winifred, MT · 7 nm
- WH0 Woodhawk Winifred, MT · 9 nm
- LC0 Left Coulee Winifred, MT · 11 nm
- BW8 Bullwhacker Winifred, MT · 12 nm
- CW0 Cow Creek Winifred, MT · 14 nm
- BB0 Black Butte North Winifred, MT · 14 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.