C81 Campbell night times
Grayslake, IL
Night of Nov 6 to Nov 7CST
Position lights
§ 91.2094:39 PMto6:33 AM
Sunset to sunrise. Lights on.
2239Z to 1233Z
Night logging
§ 1.15:09 PMto6:04 AM
Civil twilight. Log it as night.
2309Z to 1204Z
Night currency
§ 61.57(b)5:39 PMto5:33 AM
One hour after sunset. Landings count.
2339Z to 1133Z
Evenings at C81
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1CST | 4:45 PM | 5:15 PM | 5:45 PM |
| Nov 15CST | 4:30 PM | 5:00 PM | 5:30 PM |
| Dec 1CST | 4:21 PM | 4:52 PM | 5:21 PM |
| Dec 15CST | 4:21 PM | 4:52 PM | 5:21 PM |
| Jan 1CST | 4:30 PM | 5:02 PM | 5:30 PM |
| Jan 15CST | 4:45 PM | 5:16 PM | 5:45 PM |
| Feb 1CST | 5:06 PM | 5:36 PM | 6:06 PM |
| Feb 15CST | 5:25 PM | 5:53 PM | 6:25 PM |
| Mar 1CST | 5:42 PM | 6:10 PM | 6:42 PM |
| Mar 15CDT | 6:59 PM | 7:27 PM | 7:59 PM |
| Apr 1CDT | 7:18 PM | 7:46 PM | 8:18 PM |
| Apr 15CDT | 7:34 PM | 8:03 PM | 8:34 PM |
| May 1CDT | 7:52 PM | 8:22 PM | 8:52 PM |
| May 15CDT | 8:07 PM | 8:39 PM | 9:07 PM |
| Jun 1CDT | 8:22 PM | 8:56 PM | 9:22 PM |
| Jun 15CDT | 8:31 PM | 9:05 PM | 9:31 PM |
| Jul 1CDT | 8:33 PM | 9:07 PM | 9:33 PM |
| Jul 15CDT | 8:27 PM | 9:01 PM | 9:27 PM |
| Aug 1CDT | 8:12 PM | 8:44 PM | 9:12 PM |
| Aug 15CDT | 7:53 PM | 8:24 PM | 8:53 PM |
| Sep 1CDT | 7:26 PM | 7:55 PM | 8:26 PM |
| Sep 15CDT | 7:02 PM | 7:30 PM | 8:02 PM |
| Oct 1CDT | 6:34 PM | 7:02 PM | 7:34 PM |
| Oct 15CDT | 6:11 PM | 6:39 PM | 7:11 PM |
Mornings at C81
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1CST | 5:26 AM | 5:57 AM | 6:26 AM |
| Nov 15CST | 5:43 AM | 6:13 AM | 6:43 AM |
| Dec 1CST | 6:02 AM | 6:30 AM | 7:02 AM |
| Dec 15CST | 6:14 AM | 6:43 AM | 7:14 AM |
| Jan 1CST | 6:21 AM | 6:50 AM | 7:21 AM |
| Jan 15CST | 6:19 AM | 6:48 AM | 7:19 AM |
| Feb 1CST | 6:06 AM | 6:36 AM | 7:06 AM |
| Feb 15CST | 5:49 AM | 6:20 AM | 6:49 AM |
| Mar 1CST | 5:28 AM | 6:00 AM | 6:28 AM |
| Mar 15CDT | 6:04 AM | 6:37 AM | 7:04 AM |
| Apr 1CDT | 5:35 AM | 6:07 AM | 6:35 AM |
| Apr 15CDT | 5:12 AM | 5:43 AM | 6:12 AM |
| May 1CDT | 4:48 AM | 5:17 AM | 5:48 AM |
| May 15CDT | 4:31 AM | 4:59 AM | 5:31 AM |
| Jun 1CDT | 4:18 AM | 4:44 AM | 5:18 AM |
| Jun 15CDT | 4:15 AM | 4:40 AM | 5:15 AM |
| Jul 1CDT | 4:19 AM | 4:45 AM | 5:19 AM |
| Jul 15CDT | 4:29 AM | 4:55 AM | 5:29 AM |
| Aug 1CDT | 4:45 AM | 5:13 AM | 5:45 AM |
| Aug 15CDT | 4:59 AM | 5:29 AM | 5:59 AM |
| Sep 1CDT | 5:17 AM | 5:49 AM | 6:17 AM |
| Sep 15CDT | 5:32 AM | 6:04 AM | 6:32 AM |
| Oct 1CDT | 5:49 AM | 6:21 AM | 6:49 AM |
| Oct 15CDT | 6:05 AM | 6:37 AM | 7:05 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 06/24
3,573 × 40 ft · Asphalt
Runway 09/27
3,270 × 40 ft · Asphalt
LIRL SPACING & LGT INTST VARIES.
NSTD TRIL OPR DUSK-DAWN.
Frequencies
Night at C81, in short
When can I log night time at C81?
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 5:09 PM to 6:04 AM CST.
When do landings at C81 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 5:39 PM to 5:33 AM CST.
When are position lights required at C81?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:39 PM to 6:33 AM CST.
Nearby airports
- KUGN Waukegan Ntl Chicago/Waukegan, IL · 11 nm
- 49C Camp Lake Camp Lake, WI · 13 nm
- 3CK Lake In The Hills Chicago/Lake In The Hills, IL · 13 nm
- 10C Galt Field Greenwood/Wonder Lake, IL · 14 nm
- KPWK Chicago Exec Chicago/Prospect Heights/Wheeling, IL · 15 nm
- 4H1 Schaumburg Municipal Helistop Chicago/Schaumburg, IL · 17 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.