29C Grindstone Air Harbor night times
Port Austin, MI
Night of Nov 6 to Nov 7EST
Position lights
§ 91.2095:15 PMto7:16 AM
Sunset to sunrise. Lights on.
2215Z to 1216Z
Night logging
§ 1.15:46 PMto6:46 AM
Civil twilight. Log it as night.
2246Z to 1146Z
Night currency
§ 61.57(b)6:15 PMto6:16 AM
One hour after sunset. Landings count.
2315Z to 1116Z
Evenings at 29C
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1EST | 5:22 PM | 5:52 PM | 6:22 PM |
| Nov 15EST | 5:05 PM | 5:36 PM | 6:05 PM |
| Dec 1EST | 4:55 PM | 5:27 PM | 5:55 PM |
| Dec 15EST | 4:54 PM | 5:27 PM | 5:54 PM |
| Jan 1EST | 5:04 PM | 5:37 PM | 6:04 PM |
| Jan 15EST | 5:19 PM | 5:51 PM | 6:19 PM |
| Feb 1EST | 5:42 PM | 6:12 PM | 6:42 PM |
| Feb 15EST | 6:01 PM | 6:31 PM | 7:01 PM |
| Mar 1EST | 6:20 PM | 6:49 PM | 7:20 PM |
| Mar 15EDT | 7:38 PM | 8:06 PM | 8:38 PM |
| Apr 1EDT | 7:59 PM | 8:28 PM | 8:59 PM |
| Apr 15EDT | 8:16 PM | 8:46 PM | 9:16 PM |
| May 1EDT | 8:35 PM | 9:07 PM | 9:35 PM |
| May 15EDT | 8:51 PM | 9:25 PM | 9:51 PM |
| Jun 1EDT | 9:08 PM | 9:43 PM | 10:08 PM |
| Jun 15EDT | 9:16 PM | 9:53 PM | 10:16 PM |
| Jul 1EDT | 9:18 PM | 9:55 PM | 10:18 PM |
| Jul 15EDT | 9:12 PM | 9:47 PM | 10:12 PM |
| Aug 1EDT | 8:56 PM | 9:29 PM | 9:56 PM |
| Aug 15EDT | 8:36 PM | 9:07 PM | 9:36 PM |
| Sep 1EDT | 8:08 PM | 8:38 PM | 9:08 PM |
| Sep 15EDT | 7:42 PM | 8:11 PM | 8:42 PM |
| Oct 1EDT | 7:13 PM | 7:41 PM | 8:13 PM |
| Oct 15EDT | 6:48 PM | 7:17 PM | 7:48 PM |
Mornings at 29C
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1EST | 6:08 AM | 6:38 AM | 7:08 AM |
| Nov 15EST | 6:27 AM | 6:56 AM | 7:27 AM |
| Dec 1EST | 6:47 AM | 7:14 AM | 7:47 AM |
| Dec 15EST | 7:00 AM | 7:27 AM | 8:00 AM |
| Jan 1EST | 7:07 AM | 7:34 AM | 8:07 AM |
| Jan 15EST | 7:03 AM | 7:31 AM | 8:03 AM |
| Feb 1EST | 6:49 AM | 7:19 AM | 7:49 AM |
| Feb 15EST | 6:31 AM | 7:01 AM | 7:31 AM |
| Mar 1EST | 6:09 AM | 6:40 AM | 7:09 AM |
| Mar 15EDT | 6:44 AM | 7:15 AM | 7:44 AM |
| Apr 1EDT | 6:13 AM | 6:44 AM | 7:13 AM |
| Apr 15EDT | 5:49 AM | 6:19 AM | 6:49 AM |
| May 1EDT | 5:23 AM | 5:52 AM | 6:23 AM |
| May 15EDT | 5:06 AM | 5:32 AM | 6:06 AM |
| Jun 1EDT | 4:52 AM | 5:16 AM | 5:52 AM |
| Jun 15EDT | 4:48 AM | 5:12 AM | 5:48 AM |
| Jul 1EDT | 4:52 AM | 5:16 AM | 5:52 AM |
| Jul 15EDT | 5:03 AM | 5:28 AM | 6:03 AM |
| Aug 1EDT | 5:20 AM | 5:47 AM | 6:20 AM |
| Aug 15EDT | 5:35 AM | 6:04 AM | 6:35 AM |
| Sep 1EDT | 5:55 AM | 6:25 AM | 6:55 AM |
| Sep 15EDT | 6:11 AM | 6:42 AM | 7:11 AM |
| Oct 1EDT | 6:29 AM | 7:00 AM | 7:29 AM |
| Oct 15EDT | 6:46 AM | 7:17 AM | 7:46 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 18/36
1,800 × 85 ft · Turf
Frequencies
Night at 29C, in short
When can I log night time at 29C?
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 5:46 PM to 6:46 AM EST.
When do landings at 29C 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 6:15 PM to 6:16 AM EST.
When are position lights required at 29C?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:15 PM to 7:16 AM EST.
Nearby airports
- E53 Engler Field Bad Axe, MI · 13 nm
- KBAX Huron County Memorial Bad Axe, MI · 16 nm
- 6D9 Iosco County East Tawas, MI · 27 nm
- 98G Sebewaing Township Sebewaing, MI · 30 nm
- KOSC Oscoda/Wurtsmith Oscoda, MI · 32 nm
- Y83 Sandusky City Sandusky, MI · 36 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.