1BT Bonne Terre Municipal night times
Bonne Terre, MO
Night of Nov 6 to Nov 7CST
Position lights
§ 91.2094:58 PMto6:34 AM
Sunset to sunrise. Lights on.
2258Z to 1234Z
Night logging
§ 1.15:26 PMto6:07 AM
Civil twilight. Log it as night.
2326Z to 1207Z
Night currency
§ 61.57(b)5:58 PMto5:34 AM
One hour after sunset. Landings count.
2358Z to 1134Z
Evenings at 1BT
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1CST | 5:03 PM | 5:30 PM | 6:03 PM |
| Nov 15CST | 4:51 PM | 5:19 PM | 5:51 PM |
| Dec 1CST | 4:43 PM | 5:12 PM | 5:43 PM |
| Dec 15CST | 4:44 PM | 5:14 PM | 5:44 PM |
| Jan 1CST | 4:54 PM | 5:23 PM | 5:54 PM |
| Jan 15CST | 5:07 PM | 5:36 PM | 6:07 PM |
| Feb 1CST | 5:25 PM | 5:53 PM | 6:25 PM |
| Feb 15CST | 5:41 PM | 6:08 PM | 6:41 PM |
| Mar 1CST | 5:56 PM | 6:22 PM | 6:56 PM |
| Mar 15CDT | 7:09 PM | 7:36 PM | 8:09 PM |
| Apr 1CDT | 7:25 PM | 7:52 PM | 8:25 PM |
| Apr 15CDT | 7:38 PM | 8:05 PM | 8:38 PM |
| May 1CDT | 7:53 PM | 8:21 PM | 8:53 PM |
| May 15CDT | 8:06 PM | 8:35 PM | 9:06 PM |
| Jun 1CDT | 8:19 PM | 8:50 PM | 9:19 PM |
| Jun 15CDT | 8:26 PM | 8:58 PM | 9:26 PM |
| Jul 1CDT | 8:29 PM | 9:00 PM | 9:29 PM |
| Jul 15CDT | 8:24 PM | 8:55 PM | 9:24 PM |
| Aug 1CDT | 8:11 PM | 8:40 PM | 9:11 PM |
| Aug 15CDT | 7:55 PM | 8:23 PM | 8:55 PM |
| Sep 1CDT | 7:32 PM | 7:59 PM | 8:32 PM |
| Sep 15CDT | 7:10 PM | 7:37 PM | 8:10 PM |
| Oct 1CDT | 6:45 PM | 7:12 PM | 7:45 PM |
| Oct 15CDT | 6:25 PM | 6:51 PM | 7:25 PM |
Mornings at 1BT
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1CST | 5:28 AM | 6:01 AM | 6:28 AM |
| Nov 15CST | 5:43 AM | 6:15 AM | 6:43 AM |
| Dec 1CST | 5:59 AM | 6:30 AM | 6:59 AM |
| Dec 15CST | 6:11 AM | 6:41 AM | 7:11 AM |
| Jan 1CST | 6:18 AM | 6:49 AM | 7:18 AM |
| Jan 15CST | 6:17 AM | 6:48 AM | 7:17 AM |
| Feb 1CST | 6:07 AM | 6:39 AM | 7:07 AM |
| Feb 15CST | 5:52 AM | 6:25 AM | 6:52 AM |
| Mar 1CST | 5:34 AM | 6:08 AM | 6:34 AM |
| Mar 15CDT | 6:14 AM | 6:47 AM | 7:14 AM |
| Apr 1CDT | 5:48 AM | 6:21 AM | 6:48 AM |
| Apr 15CDT | 5:27 AM | 6:00 AM | 6:27 AM |
| May 1CDT | 5:06 AM | 5:38 AM | 6:06 AM |
| May 15CDT | 4:52 AM | 5:23 AM | 5:52 AM |
| Jun 1CDT | 4:42 AM | 5:11 AM | 5:42 AM |
| Jun 15CDT | 4:39 AM | 5:08 AM | 5:39 AM |
| Jul 1CDT | 4:44 AM | 5:12 AM | 5:44 AM |
| Jul 15CDT | 4:52 AM | 5:21 AM | 5:52 AM |
| Aug 1CDT | 5:05 AM | 5:36 AM | 6:05 AM |
| Aug 15CDT | 5:18 AM | 5:49 AM | 6:18 AM |
| Sep 1CDT | 5:32 AM | 6:05 AM | 6:32 AM |
| Sep 15CDT | 5:44 AM | 6:18 AM | 6:44 AM |
| Oct 1CDT | 5:58 AM | 6:32 AM | 6:58 AM |
| Oct 15CDT | 6:11 AM | 6:44 AM | 7:11 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
TO INCR INTST & ACTVT MIRL RWY 14/32 - CTAF
Runway 14/32
2,800 × 49 ft · Asphalt
Frequencies
Night at 1BT, in short
When can I log night time at 1BT?
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 5:26 PM to 6:07 AM CST.
When do landings at 1BT 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 5:58 PM to 5:34 AM CST.
When are position lights required at 1BT?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:58 PM to 6:34 AM CST.
Nearby airports
- 8WC Washington County Potosi, MO · 7 nm
- H57 Bismarck Memorial Bismarck, MO · 10 nm
- KFAM Farmington Regional Farmington, MO · 12 nm
- H88 A Paul Vance Fredericktown Regional Fredericktown, MO · 23 nm
- KUUV Sullivan Regional Sullivan, MO · 34 nm
- KPCD Perryville Regional Perryville, MO · 34 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.