D17 Westwinds night times
Delta, CO
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2095:07 PMto6:46 AM
Sunset to sunrise. Lights on.
0007Z to 1346Z
Night logging
§ 1.15:35 PMto6:18 AM
Civil twilight. Log it as night.
0035Z to 1318Z
Night currency
§ 61.57(b)6:07 PMto5:46 AM
One hour after sunset. Landings count.
0107Z to 1246Z
Evenings at D17
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:12 PM | 5:40 PM | 6:12 PM |
| Nov 15MST | 4:59 PM | 5:27 PM | 5:59 PM |
| Dec 1MST | 4:51 PM | 5:21 PM | 5:51 PM |
| Dec 15MST | 4:52 PM | 5:22 PM | 5:52 PM |
| Jan 1MST | 5:02 PM | 5:31 PM | 6:02 PM |
| Jan 15MST | 5:15 PM | 5:44 PM | 6:15 PM |
| Feb 1MST | 5:34 PM | 6:02 PM | 6:34 PM |
| Feb 15MST | 5:50 PM | 6:17 PM | 6:50 PM |
| Mar 1MST | 6:05 PM | 6:32 PM | 7:05 PM |
| Mar 15MDT | 7:20 PM | 7:46 PM | 8:20 PM |
| Apr 1MDT | 7:36 PM | 8:03 PM | 8:36 PM |
| Apr 15MDT | 7:49 PM | 8:17 PM | 8:49 PM |
| May 1MDT | 8:05 PM | 8:34 PM | 9:05 PM |
| May 15MDT | 8:18 PM | 8:48 PM | 9:18 PM |
| Jun 1MDT | 8:32 PM | 9:03 PM | 9:32 PM |
| Jun 15MDT | 8:39 PM | 9:11 PM | 9:39 PM |
| Jul 1MDT | 8:41 PM | 9:13 PM | 9:41 PM |
| Jul 15MDT | 8:37 PM | 9:08 PM | 9:37 PM |
| Aug 1MDT | 8:23 PM | 8:53 PM | 9:23 PM |
| Aug 15MDT | 8:07 PM | 8:35 PM | 9:07 PM |
| Sep 1MDT | 7:43 PM | 8:10 PM | 8:43 PM |
| Sep 15MDT | 7:21 PM | 7:48 PM | 8:21 PM |
| Oct 1MDT | 6:55 PM | 7:22 PM | 7:55 PM |
| Oct 15MDT | 6:34 PM | 7:01 PM | 7:34 PM |
Mornings at D17
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 5:40 AM | 6:12 AM | 6:40 AM |
| Nov 15MST | 5:55 AM | 6:27 AM | 6:55 AM |
| Dec 1MST | 6:12 AM | 6:43 AM | 7:12 AM |
| Dec 15MST | 6:24 AM | 6:54 AM | 7:24 AM |
| Jan 1MST | 6:31 AM | 7:01 AM | 7:31 AM |
| Jan 15MST | 6:29 AM | 7:00 AM | 7:29 AM |
| Feb 1MST | 6:19 AM | 6:51 AM | 7:19 AM |
| Feb 15MST | 6:04 AM | 6:36 AM | 7:04 AM |
| Mar 1MST | 5:45 AM | 6:18 AM | 6:45 AM |
| Mar 15MDT | 6:24 AM | 6:58 AM | 7:24 AM |
| Apr 1MDT | 5:57 AM | 6:31 AM | 6:57 AM |
| Apr 15MDT | 5:36 AM | 6:09 AM | 6:36 AM |
| May 1MDT | 5:15 AM | 5:46 AM | 6:15 AM |
| May 15MDT | 5:01 AM | 5:31 AM | 6:01 AM |
| Jun 1MDT | 4:50 AM | 5:18 AM | 5:50 AM |
| Jun 15MDT | 4:47 AM | 5:15 AM | 5:47 AM |
| Jul 1MDT | 4:51 AM | 5:20 AM | 5:51 AM |
| Jul 15MDT | 5:00 AM | 5:29 AM | 6:00 AM |
| Aug 1MDT | 5:14 AM | 5:44 AM | 6:14 AM |
| Aug 15MDT | 5:26 AM | 5:58 AM | 6:26 AM |
| Sep 1MDT | 5:42 AM | 6:14 AM | 6:42 AM |
| Sep 15MDT | 5:54 AM | 6:27 AM | 6:54 AM |
| Oct 1MDT | 6:08 AM | 6:42 AM | 7:08 AM |
| Oct 15MDT | 6:22 AM | 6:55 AM | 7:22 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 04/22
4,100 × 40 ft · Asphalt
Runway 13/31
2,000 × 70 ft · Gravel
Frequencies
Night at D17, in short
When can I log night time at D17?
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 5:35 PM to 6:18 AM MST.
When do landings at D17 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 5:46 AM MST.
When are position lights required at D17?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:07 PM to 6:46 AM MST.
Nearby airports
- KAJZ Blake Field Delta, CO · 4 nm
- KMTJ Montrose Regional Montrose, CO · 19 nm
- 99V Crawford Crawford, CO · 24 nm
- 7V2 North Fork Valley Paonia, CO · 24 nm
- KGJT Grand Junction Regional Grand Junction, CO · 28 nm
- KAIB Hopkins Field Nucla, CO · 37 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.