KBTM Bert Mooney night times
Butte, MT · FAA BTM
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2095:09 PMto7:19 AM
Sunset to sunrise. Lights on.
0009Z to 1419Z
Night logging
§ 1.15:40 PMto6:48 AM
Civil twilight. Log it as night.
0040Z to 1348Z
Night currency
§ 61.57(b)6:09 PMto6:19 AM
One hour after sunset. Landings count.
0109Z to 1319Z
Evenings at KBTM
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:16 PM | 5:47 PM | 6:16 PM |
| Nov 15MST | 4:58 PM | 5:31 PM | 5:58 PM |
| Dec 1MST | 4:46 PM | 5:20 PM | 5:46 PM |
| Dec 15MST | 4:45 PM | 5:20 PM | 5:45 PM |
| Jan 1MST | 4:56 PM | 5:30 PM | 5:56 PM |
| Jan 15MST | 5:11 PM | 5:45 PM | 6:11 PM |
| Feb 1MST | 5:35 PM | 6:07 PM | 6:35 PM |
| Feb 15MST | 5:56 PM | 6:27 PM | 6:56 PM |
| Mar 1MST | 6:16 PM | 6:46 PM | 7:16 PM |
| Mar 15MDT | 7:36 PM | 8:06 PM | 8:36 PM |
| Apr 1MDT | 7:58 PM | 8:29 PM | 8:58 PM |
| Apr 15MDT | 8:17 PM | 8:48 PM | 9:17 PM |
| May 1MDT | 8:38 PM | 9:11 PM | 9:38 PM |
| May 15MDT | 8:55 PM | 9:31 PM | 9:55 PM |
| Jun 1MDT | 9:13 PM | 9:51 PM | 10:13 PM |
| Jun 15MDT | 9:22 PM | 10:01 PM | 10:22 PM |
| Jul 1MDT | 9:24 PM | 10:02 PM | 10:24 PM |
| Jul 15MDT | 9:17 PM | 9:54 PM | 10:17 PM |
| Aug 1MDT | 8:59 PM | 9:34 PM | 9:59 PM |
| Aug 15MDT | 8:39 PM | 9:11 PM | 9:39 PM |
| Sep 1MDT | 8:08 PM | 8:39 PM | 9:08 PM |
| Sep 15MDT | 7:41 PM | 8:11 PM | 8:41 PM |
| Oct 1MDT | 7:10 PM | 7:40 PM | 8:10 PM |
| Oct 15MDT | 6:44 PM | 7:14 PM | 7:44 PM |
Mornings at KBTM
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:11 AM | 6:40 AM | 7:11 AM |
| Nov 15MST | 6:31 AM | 6:58 AM | 7:31 AM |
| Dec 1MST | 6:51 AM | 7:18 AM | 7:51 AM |
| Dec 15MST | 7:05 AM | 7:31 AM | 8:05 AM |
| Jan 1MST | 7:12 AM | 7:37 AM | 8:12 AM |
| Jan 15MST | 7:08 AM | 7:34 AM | 8:08 AM |
| Feb 1MST | 6:52 AM | 7:20 AM | 7:52 AM |
| Feb 15MST | 6:33 AM | 7:02 AM | 7:33 AM |
| Mar 1MST | 6:09 AM | 6:39 AM | 7:09 AM |
| Mar 15MDT | 6:43 AM | 7:13 AM | 7:43 AM |
| Apr 1MDT | 6:10 AM | 6:40 AM | 7:10 AM |
| Apr 15MDT | 5:44 AM | 6:13 AM | 6:44 AM |
| May 1MDT | 5:17 AM | 5:44 AM | 6:17 AM |
| May 15MDT | 4:58 AM | 5:23 AM | 5:58 AM |
| Jun 1MDT | 4:43 AM | 5:06 AM | 5:43 AM |
| Jun 15MDT | 4:39 AM | 5:00 AM | 5:39 AM |
| Jul 1MDT | 4:43 AM | 5:05 AM | 5:43 AM |
| Jul 15MDT | 4:54 AM | 5:17 AM | 5:54 AM |
| Aug 1MDT | 5:13 AM | 5:38 AM | 6:13 AM |
| Aug 15MDT | 5:30 AM | 5:57 AM | 6:30 AM |
| Sep 1MDT | 5:51 AM | 6:20 AM | 6:51 AM |
| Sep 15MDT | 6:08 AM | 6:38 AM | 7:08 AM |
| Oct 1MDT | 6:28 AM | 6:59 AM | 7:28 AM |
| Oct 15MDT | 6:47 AM | 7:17 AM | 7:47 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT MALSR RWY 15; REIL RWY 12 & 30; PAPI RWY 12 & 30; VASI RWY 33; MIRL RWY 15/33 & 12/30 - CTAF. PAPI RWY 15 OPR CONSLY.
Runway 12/30
5,100 × 75 ft · Asphalt
PAPI UNUSBL BYD 5 DEG RIGHT OF RCL.
PAPI RSTRD TO 2.1 NM FM RWY 30 THLD DUE TO HIGH TERRAIN. PAPI UNUSBL BYD 2 DEG RIGHT OF RCL.
Runway 15/33
9,000 × 150 ft · Asphalt
DO NOT USE VASI BYD 1.5 MI DUE TO HIGH TERRAIN.
Frequencies
Night at KBTM, in short
When can I log night time at KBTM?
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 5:40 PM to 6:48 AM MST.
When do landings at KBTM 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 6:09 PM to 6:19 AM MST.
When are position lights required at KBTM?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:09 PM to 7:19 AM MST.
Nearby airports
- 3U3 Bowman Field Anaconda, MT · 19 nm
- 3U9 Boulder Boulder, MT · 22 nm
- 02T Wise River Wise River, MT · 23 nm
- KRVF Ruby Valley Field Twin Bridges, MT · 26 nm
- 38S Deer Lodge-City-County Deer Lodge, MT · 28 nm
- 9S5 Three Forks Three Forks, MT · 39 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.