KISB Sibley Municipal night times
Sibley, IA · FAA ISB
Night of Nov 6 to Nov 7CST
Position lights
§ 91.2095:08 PMto7:06 AM
Sunset to sunrise. Lights on.
2308Z to 1306Z
Night logging
§ 1.15:38 PMto6:36 AM
Civil twilight. Log it as night.
2338Z to 1236Z
Night currency
§ 61.57(b)6:08 PMto6:06 AM
One hour after sunset. Landings count.
0008Z to 1206Z
Evenings at KISB
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1CST | 5:14 PM | 5:44 PM | 6:14 PM |
| Nov 15CST | 4:58 PM | 5:29 PM | 5:58 PM |
| Dec 1CST | 4:48 PM | 5:20 PM | 5:48 PM |
| Dec 15CST | 4:48 PM | 5:20 PM | 5:48 PM |
| Jan 1CST | 4:58 PM | 5:30 PM | 5:58 PM |
| Jan 15CST | 5:13 PM | 5:44 PM | 6:13 PM |
| Feb 1CST | 5:35 PM | 6:05 PM | 6:35 PM |
| Feb 15CST | 5:54 PM | 6:23 PM | 6:54 PM |
| Mar 1CST | 6:12 PM | 6:41 PM | 7:12 PM |
| Mar 15CDT | 7:29 PM | 7:58 PM | 8:29 PM |
| Apr 1CDT | 7:49 PM | 8:18 PM | 8:49 PM |
| Apr 15CDT | 8:06 PM | 8:36 PM | 9:06 PM |
| May 1CDT | 8:25 PM | 8:56 PM | 9:25 PM |
| May 15CDT | 8:41 PM | 9:14 PM | 9:41 PM |
| Jun 1CDT | 8:57 PM | 9:32 PM | 9:57 PM |
| Jun 15CDT | 9:05 PM | 9:41 PM | 10:05 PM |
| Jul 1CDT | 9:07 PM | 9:43 PM | 10:07 PM |
| Jul 15CDT | 9:01 PM | 9:36 PM | 10:01 PM |
| Aug 1CDT | 8:45 PM | 9:18 PM | 9:45 PM |
| Aug 15CDT | 8:26 PM | 8:57 PM | 9:26 PM |
| Sep 1CDT | 7:58 PM | 8:28 PM | 8:58 PM |
| Sep 15CDT | 7:33 PM | 8:02 PM | 8:33 PM |
| Oct 1CDT | 7:04 PM | 7:33 PM | 8:04 PM |
| Oct 15CDT | 6:40 PM | 7:09 PM | 7:40 PM |
Mornings at KISB
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1CST | 5:58 AM | 6:29 AM | 6:58 AM |
| Nov 15CST | 6:17 AM | 6:46 AM | 7:17 AM |
| Dec 1CST | 6:36 AM | 7:04 AM | 7:36 AM |
| Dec 15CST | 6:49 AM | 7:16 AM | 7:49 AM |
| Jan 1CST | 6:56 AM | 7:23 AM | 7:56 AM |
| Jan 15CST | 6:53 AM | 7:21 AM | 7:53 AM |
| Feb 1CST | 6:39 AM | 7:09 AM | 7:39 AM |
| Feb 15CST | 6:21 AM | 6:52 AM | 7:21 AM |
| Mar 1CST | 6:00 AM | 6:31 AM | 7:00 AM |
| Mar 15CDT | 6:35 AM | 7:07 AM | 7:35 AM |
| Apr 1CDT | 6:05 AM | 6:36 AM | 7:05 AM |
| Apr 15CDT | 5:41 AM | 6:11 AM | 6:41 AM |
| May 1CDT | 5:16 AM | 5:45 AM | 6:16 AM |
| May 15CDT | 4:59 AM | 5:26 AM | 5:59 AM |
| Jun 1CDT | 4:45 AM | 5:11 AM | 5:45 AM |
| Jun 15CDT | 4:42 AM | 5:06 AM | 5:42 AM |
| Jul 1CDT | 4:46 AM | 5:11 AM | 5:46 AM |
| Jul 15CDT | 4:56 AM | 5:22 AM | 5:56 AM |
| Aug 1CDT | 5:13 AM | 5:40 AM | 6:13 AM |
| Aug 15CDT | 5:28 AM | 5:57 AM | 6:28 AM |
| Sep 1CDT | 5:47 AM | 6:18 AM | 6:47 AM |
| Sep 15CDT | 6:02 AM | 6:34 AM | 7:02 AM |
| Oct 1CDT | 6:20 AM | 6:52 AM | 7:20 AM |
| Oct 15CDT | 6:37 AM | 7:08 AM | 7:37 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT LIRL RY 17/35 AND PAPI RYS 17 & 35 - CTAF.
Runway 17/35
3,000 × 50 ft · Concrete
LIRL-RWY 17/35 HAVE 6 THLD LGTS EACH.
Frequencies
Night at KISB, in short
When can I log night time at KISB?
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 5:38 PM to 6:36 AM CST.
When do landings at KISB 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 6:08 PM to 6:06 AM CST.
When are position lights required at KISB?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:08 PM to 7:06 AM CST.
Nearby airports
- KSHL Sheldon Regional Sheldon, IA · 10 nm
- KOTG Worthington Municipal Worthington, MN · 19 nm
- KRRQ Rock Rapids Municipal Rock Rapids, IA · 19 nm
- 1Y9 Paullina Municipal Paullina, IA · 23 nm
- KLYV Quentin Aanenson Field Luverne, MN · 25 nm
- 4D8 Fuller Milford, IA · 26 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.