9S5 Three Forks night times
Three Forks, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2095:05 PMto7:15 AM
Sunset to sunrise. Lights on.
0005Z to 1415Z
Night logging
§ 1.15:37 PMto6:44 AM
Civil twilight. Log it as night.
0037Z to 1344Z
Night currency
§ 61.57(b)6:05 PMto6:15 AM
One hour after sunset. Landings count.
0105Z to 1315Z
Evenings at 9S5
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:12 PM | 5:43 PM | 6:12 PM |
| Nov 15MST | 4:55 PM | 5:27 PM | 5:55 PM |
| Dec 1MST | 4:43 PM | 5:17 PM | 5:43 PM |
| Dec 15MST | 4:42 PM | 5:16 PM | 5:42 PM |
| Jan 1MST | 4:52 PM | 5:26 PM | 5:52 PM |
| Jan 15MST | 5:08 PM | 5:41 PM | 6:08 PM |
| Feb 1MST | 5:32 PM | 6:04 PM | 6:32 PM |
| Feb 15MST | 5:53 PM | 6:23 PM | 6:53 PM |
| Mar 1MST | 6:13 PM | 6:43 PM | 7:13 PM |
| Mar 15MDT | 7:32 PM | 8:02 PM | 8:32 PM |
| Apr 1MDT | 7:55 PM | 8:25 PM | 8:55 PM |
| Apr 15MDT | 8:13 PM | 8:44 PM | 9:13 PM |
| May 1MDT | 8:34 PM | 9:07 PM | 9:34 PM |
| May 15MDT | 8:51 PM | 9:27 PM | 9:51 PM |
| Jun 1MDT | 9:09 PM | 9:47 PM | 10:09 PM |
| Jun 15MDT | 9:18 PM | 9:57 PM | 10:18 PM |
| Jul 1MDT | 9:20 PM | 9:58 PM | 10:20 PM |
| Jul 15MDT | 9:13 PM | 9:50 PM | 10:13 PM |
| Aug 1MDT | 8:55 PM | 9:30 PM | 9:55 PM |
| Aug 15MDT | 8:35 PM | 9:07 PM | 9:35 PM |
| Sep 1MDT | 8:05 PM | 8:35 PM | 9:05 PM |
| Sep 15MDT | 7:38 PM | 8:08 PM | 8:38 PM |
| Oct 1MDT | 7:06 PM | 7:36 PM | 8:06 PM |
| Oct 15MDT | 6:40 PM | 7:10 PM | 7:40 PM |
Mornings at 9S5
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:07 AM | 6:36 AM | 7:07 AM |
| Nov 15MST | 6:27 AM | 6:54 AM | 7:27 AM |
| Dec 1MST | 6:47 AM | 7:14 AM | 7:47 AM |
| Dec 15MST | 7:01 AM | 7:27 AM | 8:01 AM |
| Jan 1MST | 7:08 AM | 7:33 AM | 8:08 AM |
| Jan 15MST | 7:04 AM | 7:30 AM | 8:04 AM |
| Feb 1MST | 6:48 AM | 7:16 AM | 7:48 AM |
| Feb 15MST | 6:29 AM | 6:58 AM | 7:29 AM |
| Mar 1MST | 6:05 AM | 6:35 AM | 7:05 AM |
| Mar 15MDT | 6:39 AM | 7:09 AM | 7:39 AM |
| Apr 1MDT | 6:06 AM | 6:36 AM | 7:06 AM |
| Apr 15MDT | 5:40 AM | 6:09 AM | 6:40 AM |
| May 1MDT | 5:14 AM | 5:41 AM | 6:14 AM |
| May 15MDT | 4:55 AM | 5:20 AM | 5:55 AM |
| Jun 1MDT | 4:40 AM | 5:02 AM | 5:40 AM |
| Jun 15MDT | 4:35 AM | 4:57 AM | 5:35 AM |
| Jul 1MDT | 4:40 AM | 5:02 AM | 5:40 AM |
| Jul 15MDT | 4:51 AM | 5:14 AM | 5:51 AM |
| Aug 1MDT | 5:09 AM | 5:35 AM | 6:09 AM |
| Aug 15MDT | 5:26 AM | 5:53 AM | 6:26 AM |
| Sep 1MDT | 5:47 AM | 6:16 AM | 6:47 AM |
| Sep 15MDT | 6:04 AM | 6:34 AM | 7:04 AM |
| Oct 1MDT | 6:25 AM | 6:55 AM | 7:25 AM |
| Oct 15MDT | 6:43 AM | 7:13 AM | 7:43 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT REILS RWY 03 & 21; PAPI RWY 03 & 21; MIRL RWY 03/21 - CTAF
Runway 03/21
5,099 × 60 ft · Asphalt
Frequencies
Night at 9S5, in short
When can I log night time at 9S5?
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 5:37 PM to 6:44 AM MST.
When do landings at 9S5 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 6:05 PM to 6:15 AM MST.
When are position lights required at 9S5?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 5:05 PM to 7:15 AM MST.
Nearby airports
- KBZN Bozeman Yellowstone International Bozeman, MT · 19 nm
- 8U8 Townsend Townsend, MT · 27 nm
- 3U9 Boulder Boulder, MT · 30 nm
- 8U9 Canyon Ferry Townsend, MT · 32 nm
- KEKS Ennis Big Sky Ennis, MT · 36 nm
- KRVF Ruby Valley Field Twin Bridges, MT · 37 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.