9Y1 Dunn County Weydahl Field night times
Killdeer, ND
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:26 PMto6:44 AM
Sunset to sunrise. Lights on.
2326Z to 1344Z
Night logging
§ 1.14:59 PMto6:11 AM
Civil twilight. Log it as night.
2359Z to 1311Z
Night currency
§ 61.57(b)5:26 PMto5:44 AM
One hour after sunset. Landings count.
0026Z to 1244Z
Evenings at 9Y1
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 4:34 PM | 5:06 PM | 5:34 PM |
| Nov 15MST | 4:15 PM | 4:49 PM | 5:15 PM |
| Dec 1MST | 4:02 PM | 4:37 PM | 5:02 PM |
| Dec 15MST | 4:01 PM | 4:37 PM | 5:01 PM |
| Jan 1MST | 4:11 PM | 4:47 PM | 5:11 PM |
| Jan 15MST | 4:28 PM | 5:02 PM | 5:28 PM |
| Feb 1MST | 4:53 PM | 5:26 PM | 5:53 PM |
| Feb 15MST | 5:15 PM | 5:46 PM | 6:15 PM |
| Mar 1MST | 5:36 PM | 6:07 PM | 6:36 PM |
| Mar 15MDT | 6:57 PM | 7:27 PM | 7:57 PM |
| Apr 1MDT | 7:21 PM | 7:52 PM | 8:21 PM |
| Apr 15MDT | 7:40 PM | 8:13 PM | 8:40 PM |
| May 1MDT | 8:03 PM | 8:37 PM | 9:03 PM |
| May 15MDT | 8:21 PM | 8:58 PM | 9:21 PM |
| Jun 1MDT | 8:40 PM | 9:19 PM | 9:40 PM |
| Jun 15MDT | 8:50 PM | 9:30 PM | 9:50 PM |
| Jul 1MDT | 8:51 PM | 9:31 PM | 9:51 PM |
| Jul 15MDT | 8:44 PM | 9:22 PM | 9:44 PM |
| Aug 1MDT | 8:25 PM | 9:01 PM | 9:25 PM |
| Aug 15MDT | 8:03 PM | 8:37 PM | 9:03 PM |
| Sep 1MDT | 7:31 PM | 8:03 PM | 8:31 PM |
| Sep 15MDT | 7:03 PM | 7:34 PM | 8:03 PM |
| Oct 1MDT | 6:31 PM | 7:01 PM | 7:31 PM |
| Oct 15MDT | 6:03 PM | 6:34 PM | 7:03 PM |
Mornings at 9Y1
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 5:35 AM | 6:03 AM | 6:35 AM |
| Nov 15MST | 5:56 AM | 6:22 AM | 6:56 AM |
| Dec 1MST | 6:18 AM | 6:43 AM | 7:18 AM |
| Dec 15MST | 6:32 AM | 6:56 AM | 7:32 AM |
| Jan 1MST | 6:38 AM | 7:03 AM | 7:38 AM |
| Jan 15MST | 6:34 AM | 6:59 AM | 7:34 AM |
| Feb 1MST | 6:17 AM | 6:44 AM | 7:17 AM |
| Feb 15MST | 5:56 AM | 6:25 AM | 6:56 AM |
| Mar 1MST | 5:32 AM | 6:01 AM | 6:32 AM |
| Mar 15MDT | 6:04 AM | 6:34 AM | 7:04 AM |
| Apr 1MDT | 5:30 AM | 5:59 AM | 6:30 AM |
| Apr 15MDT | 5:03 AM | 5:31 AM | 6:03 AM |
| May 1MDT | 4:35 AM | 5:01 AM | 5:35 AM |
| May 15MDT | 4:15 AM | 4:38 AM | 5:15 AM |
| Jun 1MDT | 3:58 AM | 4:19 AM | 4:58 AM |
| Jun 15MDT | 3:54 AM | 4:13 AM | 4:54 AM |
| Jul 1MDT | 3:58 AM | 4:18 AM | 4:58 AM |
| Jul 15MDT | 4:10 AM | 4:31 AM | 5:10 AM |
| Aug 1MDT | 4:29 AM | 4:53 AM | 5:29 AM |
| Aug 15MDT | 4:47 AM | 5:14 AM | 5:47 AM |
| Sep 1MDT | 5:10 AM | 5:38 AM | 6:10 AM |
| Sep 15MDT | 5:28 AM | 5:58 AM | 6:28 AM |
| Oct 1MDT | 5:50 AM | 6:19 AM | 6:50 AM |
| Oct 15MDT | 6:10 AM | 6:39 AM | 7:10 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT HIRL RWY 13/31 & PAPI RWY 13/31 - CTAF
Runway 13/31
4,200 × 60 ft · Asphalt
Frequencies
Night at 9Y1, in short
When can I log night time at 9Y1?
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 4:59 PM to 6:11 AM MST.
When do landings at 9Y1 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 5:26 PM to 5:44 AM MST.
When are position lights required at 9Y1?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:26 PM to 6:44 AM MST.
Nearby airports
- S25 Watford City Municipal Watford City, ND · 31 nm
- 4E8 Richardton Richardton, ND · 34 nm
- KDIK Dickinson/Theodore Roosevelt Regional Dickinson, ND · 36 nm
- 05D New Town Municipal New Town, ND · 37 nm
- 95D Beulah Beulah, ND · 40 nm
- Y74 Parshall-Hankins Parshall, ND · 41 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.