KOLZ Oelwein Municipal night times
Oelwein, IA · FAA OLZ
Night of Nov 6 to Nov 7CST
Position lights
§ 91.2094:54 PMto6:50 AM
Sunset to sunrise. Lights on.
2254Z to 1250Z
Night logging
§ 1.15:24 PMto6:20 AM
Civil twilight. Log it as night.
2324Z to 1220Z
Night currency
§ 61.57(b)5:54 PMto5:50 AM
One hour after sunset. Landings count.
2354Z to 1150Z
Evenings at KOLZ
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1CST | 5:00 PM | 5:30 PM | 6:00 PM |
| Nov 15CST | 4:45 PM | 5:15 PM | 5:45 PM |
| Dec 1CST | 4:35 PM | 5:07 PM | 5:35 PM |
| Dec 15CST | 4:35 PM | 5:07 PM | 5:35 PM |
| Jan 1CST | 4:45 PM | 5:17 PM | 5:45 PM |
| Jan 15CST | 4:59 PM | 5:31 PM | 5:59 PM |
| Feb 1CST | 5:21 PM | 5:51 PM | 6:21 PM |
| Feb 15CST | 5:40 PM | 6:09 PM | 6:40 PM |
| Mar 1CST | 5:57 PM | 6:26 PM | 6:57 PM |
| Mar 15CDT | 7:14 PM | 7:42 PM | 8:14 PM |
| Apr 1CDT | 7:34 PM | 8:02 PM | 8:34 PM |
| Apr 15CDT | 7:50 PM | 8:19 PM | 8:50 PM |
| May 1CDT | 8:08 PM | 8:39 PM | 9:08 PM |
| May 15CDT | 8:23 PM | 8:56 PM | 9:23 PM |
| Jun 1CDT | 8:39 PM | 9:13 PM | 9:39 PM |
| Jun 15CDT | 8:48 PM | 9:23 PM | 9:48 PM |
| Jul 1CDT | 8:50 PM | 9:25 PM | 9:50 PM |
| Jul 15CDT | 8:44 PM | 9:18 PM | 9:44 PM |
| Aug 1CDT | 8:28 PM | 9:00 PM | 9:28 PM |
| Aug 15CDT | 8:10 PM | 8:40 PM | 9:10 PM |
| Sep 1CDT | 7:42 PM | 8:11 PM | 8:42 PM |
| Sep 15CDT | 7:18 PM | 7:46 PM | 8:18 PM |
| Oct 1CDT | 6:49 PM | 7:18 PM | 7:49 PM |
| Oct 15CDT | 6:26 PM | 6:54 PM | 7:26 PM |
Mornings at KOLZ
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1CST | 5:42 AM | 6:13 AM | 6:42 AM |
| Nov 15CST | 6:00 AM | 6:29 AM | 7:00 AM |
| Dec 1CST | 6:19 AM | 6:47 AM | 7:19 AM |
| Dec 15CST | 6:31 AM | 6:59 AM | 7:31 AM |
| Jan 1CST | 6:38 AM | 7:06 AM | 7:38 AM |
| Jan 15CST | 6:35 AM | 7:04 AM | 7:35 AM |
| Feb 1CST | 6:22 AM | 6:52 AM | 7:22 AM |
| Feb 15CST | 6:05 AM | 6:36 AM | 7:05 AM |
| Mar 1CST | 5:44 AM | 6:15 AM | 6:44 AM |
| Mar 15CDT | 6:20 AM | 6:52 AM | 7:20 AM |
| Apr 1CDT | 5:50 AM | 6:22 AM | 6:50 AM |
| Apr 15CDT | 5:27 AM | 5:57 AM | 6:27 AM |
| May 1CDT | 5:03 AM | 5:32 AM | 6:03 AM |
| May 15CDT | 4:46 AM | 5:13 AM | 5:46 AM |
| Jun 1CDT | 4:33 AM | 4:59 AM | 5:33 AM |
| Jun 15CDT | 4:29 AM | 4:54 AM | 5:29 AM |
| Jul 1CDT | 4:34 AM | 4:59 AM | 5:34 AM |
| Jul 15CDT | 4:43 AM | 5:10 AM | 5:43 AM |
| Aug 1CDT | 5:00 AM | 5:27 AM | 6:00 AM |
| Aug 15CDT | 5:14 AM | 5:44 AM | 6:14 AM |
| Sep 1CDT | 5:33 AM | 6:04 AM | 6:33 AM |
| Sep 15CDT | 5:48 AM | 6:19 AM | 6:48 AM |
| Oct 1CDT | 6:05 AM | 6:37 AM | 7:05 AM |
| Oct 15CDT | 6:21 AM | 6:53 AM | 7:21 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT MIRL RY 13/31 & REIL RY 13/31 CTAF.
Runway 13/31
4,000 × 75 ft · Concrete
Runway 18/36
1,822 × 85 ft · Turf
Frequencies
Night at KOLZ, in short
When can I log night time at KOLZ?
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 5:24 PM to 6:20 AM CST.
When do landings at KOLZ 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 5:54 PM to 5:50 AM CST.
When are position lights required at KOLZ?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:54 PM to 6:50 AM CST.
Nearby airports
- KIIB James H Connell Field At Independence Municipal Independence, IA · 14 nm
- 3Y2 George L Scott Municipal West Union, IA · 20 nm
- KALO Waterloo Regional Waterloo, IA · 20 nm
- C25 Waverly Municipal Waverly, IA · 24 nm
- C27 Manchester Municipal Manchester, IA · 24 nm
- KVTI Vinton Veterans Memorial Airpark Vinton, IA · 28 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.