D55 Robertson Field night times
Langdon, ND
Night of Nov 6 to Nov 7CST
Position lights
§ 91.2095:05 PMto7:30 AM
Sunset to sunrise. Lights on.
2305Z to 1330Z
Night logging
§ 1.15:39 PMto6:56 AM
Civil twilight. Log it as night.
2339Z to 1256Z
Night currency
§ 61.57(b)6:05 PMto6:30 AM
One hour after sunset. Landings count.
0005Z to 1230Z
Evenings at D55
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1CST | 5:13 PM | 5:46 PM | 6:13 PM |
| Nov 15CST | 4:53 PM | 5:28 PM | 5:53 PM |
| Dec 1CST | 4:40 PM | 5:16 PM | 5:40 PM |
| Dec 15CST | 4:38 PM | 5:15 PM | 5:38 PM |
| Jan 1CST | 4:48 PM | 5:25 PM | 5:48 PM |
| Jan 15CST | 5:05 PM | 5:41 PM | 6:05 PM |
| Feb 1CST | 5:31 PM | 6:05 PM | 6:31 PM |
| Feb 15CST | 5:54 PM | 6:27 PM | 6:54 PM |
| Mar 1CST | 6:17 PM | 6:49 PM | 7:17 PM |
| Mar 15CDT | 7:39 PM | 8:10 PM | 8:39 PM |
| Apr 1CDT | 8:04 PM | 8:36 PM | 9:04 PM |
| Apr 15CDT | 8:25 PM | 8:58 PM | 9:25 PM |
| May 1CDT | 8:49 PM | 9:24 PM | 9:49 PM |
| May 15CDT | 9:08 PM | 9:46 PM | 10:08 PM |
| Jun 1CDT | 9:28 PM | 10:09 PM | 10:28 PM |
| Jun 15CDT | 9:38 PM | 10:21 PM | 10:38 PM |
| Jul 1CDT | 9:40 PM | 10:22 PM | 10:40 PM |
| Jul 15CDT | 9:32 PM | 10:12 PM | 10:32 PM |
| Aug 1CDT | 9:12 PM | 9:49 PM | 10:12 PM |
| Aug 15CDT | 8:49 PM | 9:23 PM | 9:49 PM |
| Sep 1CDT | 8:16 PM | 8:48 PM | 9:16 PM |
| Sep 15CDT | 7:47 PM | 8:18 PM | 8:47 PM |
| Oct 1CDT | 7:13 PM | 7:44 PM | 8:13 PM |
| Oct 15CDT | 6:44 PM | 7:16 PM | 7:44 PM |
Mornings at D55
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1CST | 6:21 AM | 6:47 AM | 7:21 AM |
| Nov 15CST | 6:43 AM | 7:08 AM | 7:43 AM |
| Dec 1CST | 7:05 AM | 7:29 AM | 8:05 AM |
| Dec 15CST | 7:20 AM | 7:43 AM | 8:20 AM |
| Jan 1CST | 7:27 AM | 7:50 AM | 8:27 AM |
| Jan 15CST | 7:21 AM | 7:46 AM | 8:21 AM |
| Feb 1CST | 7:03 AM | 7:30 AM | 8:03 AM |
| Feb 15CST | 6:42 AM | 7:09 AM | 7:42 AM |
| Mar 1CST | 6:16 AM | 6:44 AM | 7:16 AM |
| Mar 15CDT | 6:47 AM | 7:16 AM | 7:47 AM |
| Apr 1CDT | 6:12 AM | 6:40 AM | 7:12 AM |
| Apr 15CDT | 5:43 AM | 6:10 AM | 6:43 AM |
| May 1CDT | 5:14 AM | 5:38 AM | 6:14 AM |
| May 15CDT | 4:52 AM | 5:15 AM | 5:52 AM |
| Jun 1CDT | 4:35 AM | 4:54 AM | 5:35 AM |
| Jun 15CDT | 4:30 AM | 4:48 AM | 5:30 AM |
| Jul 1CDT | 4:35 AM | 4:53 AM | 5:35 AM |
| Jul 15CDT | 4:47 AM | 5:06 AM | 5:47 AM |
| Aug 1CDT | 5:07 AM | 5:30 AM | 6:07 AM |
| Aug 15CDT | 5:26 AM | 5:52 AM | 6:26 AM |
| Sep 1CDT | 5:50 AM | 6:18 AM | 6:50 AM |
| Sep 15CDT | 6:10 AM | 6:38 AM | 7:10 AM |
| Oct 1CDT | 6:33 AM | 7:02 AM | 7:33 AM |
| Oct 15CDT | 6:54 AM | 7:22 AM | 7:54 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT PAPI RWY 14 & 32; MIRL RWY 14/32 - CTAF.
Runway 08/26
1,930 × 100 ft · Turf
Runway 14/32
3,600 × 60 ft · Asphalt
Frequencies
Night at D55, in short
When can I log night time at D55?
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 6:56 AM CST.
When do landings at D55 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 6:05 PM to 6:30 AM CST.
When are position lights required at D55?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:05 PM to 7:30 AM CST.
Nearby airports
- 96D Walhalla Municipal Walhalla, ND · 22 nm
- 2C8 Cavalier Municipal Cavalier, ND · 30 nm
- Y37 Park River - W C Skjerven Field Park River, ND · 33 nm
- 9D7 Cando Municipal Cando, ND · 37 nm
- 4S5 St Thomas Municipal St Thomas, ND · 39 nm
- KDVL Devils Lake Regional Devils Lake, ND · 43 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.