79S Fort Benton night times
Fort Benton, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:57 PMto7:17 AM
Sunset to sunrise. Lights on.
2357Z to 1417Z
Night logging
§ 1.15:30 PMto6:44 AM
Civil twilight. Log it as night.
0030Z to 1344Z
Night currency
§ 61.57(b)5:57 PMto6:17 AM
One hour after sunset. Landings count.
0057Z to 1317Z
Evenings at 79S
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:04 PM | 5:37 PM | 6:04 PM |
| Nov 15MST | 4:45 PM | 5:19 PM | 5:45 PM |
| Dec 1MST | 4:32 PM | 5:08 PM | 5:32 PM |
| Dec 15MST | 4:30 PM | 5:07 PM | 5:30 PM |
| Jan 1MST | 4:41 PM | 5:17 PM | 5:41 PM |
| Jan 15MST | 4:57 PM | 5:32 PM | 5:57 PM |
| Feb 1MST | 5:23 PM | 5:56 PM | 6:23 PM |
| Feb 15MST | 5:45 PM | 6:17 PM | 6:45 PM |
| Mar 1MST | 6:07 PM | 6:38 PM | 7:07 PM |
| Mar 15MDT | 7:28 PM | 7:59 PM | 8:28 PM |
| Apr 1MDT | 7:53 PM | 8:24 PM | 8:53 PM |
| Apr 15MDT | 8:13 PM | 8:45 PM | 9:13 PM |
| May 1MDT | 8:35 PM | 9:10 PM | 9:35 PM |
| May 15MDT | 8:54 PM | 9:31 PM | 9:54 PM |
| Jun 1MDT | 9:13 PM | 9:53 PM | 10:13 PM |
| Jun 15MDT | 9:23 PM | 10:04 PM | 10:23 PM |
| Jul 1MDT | 9:25 PM | 10:05 PM | 10:25 PM |
| Jul 15MDT | 9:17 PM | 9:56 PM | 10:17 PM |
| Aug 1MDT | 8:58 PM | 9:34 PM | 9:58 PM |
| Aug 15MDT | 8:35 PM | 9:09 PM | 9:35 PM |
| Sep 1MDT | 8:03 PM | 8:35 PM | 9:03 PM |
| Sep 15MDT | 7:35 PM | 8:06 PM | 8:35 PM |
| Oct 1MDT | 7:02 PM | 7:33 PM | 8:02 PM |
| Oct 15MDT | 6:34 PM | 7:05 PM | 7:34 PM |
Mornings at 79S
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 | 6:35 AM | 7:07 AM |
| Nov 15MST | 6:29 AM | 6:55 AM | 7:29 AM |
| Dec 1MST | 6:51 AM | 7:16 AM | 7:51 AM |
| Dec 15MST | 7:05 AM | 7:29 AM | 8:05 AM |
| Jan 1MST | 7:12 AM | 7:36 AM | 8:12 AM |
| Jan 15MST | 7:07 AM | 7:32 AM | 8:07 AM |
| Feb 1MST | 6:50 AM | 7:17 AM | 7:50 AM |
| Feb 15MST | 6:29 AM | 6:57 AM | 7:29 AM |
| Mar 1MST | 6:03 AM | 6:32 AM | 7:03 AM |
| Mar 15MDT | 6:36 AM | 7:05 AM | 7:36 AM |
| Apr 1MDT | 6:01 AM | 6:30 AM | 7:01 AM |
| Apr 15MDT | 5:34 AM | 6:01 AM | 6:34 AM |
| May 1MDT | 5:05 AM | 5:30 AM | 6:05 AM |
| May 15MDT | 4:44 AM | 5:08 AM | 5:44 AM |
| Jun 1MDT | 4:28 AM | 4:48 AM | 5:28 AM |
| Jun 15MDT | 4:23 AM | 4:42 AM | 5:23 AM |
| Jul 1MDT | 4:28 AM | 4:47 AM | 5:28 AM |
| Jul 15MDT | 4:39 AM | 5:00 AM | 5:39 AM |
| Aug 1MDT | 4:59 AM | 5:23 AM | 5:59 AM |
| Aug 15MDT | 5:18 AM | 5:44 AM | 6:18 AM |
| Sep 1MDT | 5:41 AM | 6:09 AM | 6:41 AM |
| Sep 15MDT | 6:00 AM | 6:28 AM | 7:00 AM |
| Oct 1MDT | 6:22 AM | 6:51 AM | 7:22 AM |
| Oct 15MDT | 6:42 AM | 7:10 AM | 7:42 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT PAPI RWY 05 & 23; MIRL RWY 05/23 - CTAF.
Runway 05/23
4,300 × 75 ft · Asphalt
Runway 14/32
1,700 × 75 ft · Dirt
Frequencies
Night at 79S, in short
When can I log night time at 79S?
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 5:30 PM to 6:44 AM MST.
When do landings at 79S 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 5:57 PM to 6:17 AM MST.
When are position lights required at 79S?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:57 PM to 7:17 AM MST.
Nearby airports
- 5U8 Geraldine Geraldine, MT · 21 nm
- 3U8 Big Sandy Big Sandy, MT · 28 nm
- B70 Tiber Dam Tiber Dam, MT · 34 nm
- KGTF Great Falls International Great Falls, MT · 37 nm
- 5U0 Denton Denton, MT · 42 nm
- KLTY Liberty County Chester, MT · 42 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.