3U8 Big Sandy night times
Big Sandy, MT
Night of Nov 6 to Nov 7MST
Position lights
§ 91.2094:54 PMto7:15 AM
Sunset to sunrise. Lights on.
2354Z to 1415Z
Night logging
§ 1.15:27 PMto6:42 AM
Civil twilight. Log it as night.
0027Z to 1342Z
Night currency
§ 61.57(b)5:54 PMto6:15 AM
One hour after sunset. Landings count.
0054Z to 1315Z
Evenings at 3U8
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1MST | 5:01 PM | 5:34 PM | 6:01 PM |
| Nov 15MST | 4:42 PM | 5:16 PM | 5:42 PM |
| Dec 1MST | 4:29 PM | 5:04 PM | 5:29 PM |
| Dec 15MST | 4:27 PM | 5:03 PM | 5:27 PM |
| Jan 1MST | 4:37 PM | 5:14 PM | 5:37 PM |
| Jan 15MST | 4:54 PM | 5:29 PM | 5:54 PM |
| Feb 1MST | 5:20 PM | 5:53 PM | 6:20 PM |
| Feb 15MST | 5:43 PM | 6:15 PM | 6:43 PM |
| Mar 1MST | 6:05 PM | 6:36 PM | 7:05 PM |
| Mar 15MDT | 7:26 PM | 7:57 PM | 8:26 PM |
| Apr 1MDT | 7:51 PM | 8:22 PM | 8:51 PM |
| Apr 15MDT | 8:11 PM | 8:44 PM | 9:11 PM |
| May 1MDT | 8:34 PM | 9:09 PM | 9:34 PM |
| May 15MDT | 8:53 PM | 9:31 PM | 9:53 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 | 9:24 PM | 10:05 PM | 10:24 PM |
| Jul 15MDT | 9:16 PM | 9:56 PM | 10:16 PM |
| Aug 1MDT | 8:57 PM | 9:33 PM | 9:57 PM |
| Aug 15MDT | 8:34 PM | 9:08 PM | 9:34 PM |
| Sep 1MDT | 8:02 PM | 8:34 PM | 9:02 PM |
| Sep 15MDT | 7:33 PM | 8:04 PM | 8:33 PM |
| Oct 1MDT | 7:00 PM | 7:31 PM | 8:00 PM |
| Oct 15MDT | 6:32 PM | 7:03 PM | 7:32 PM |
Mornings at 3U8
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1MST | 6:06 AM | 6:33 AM | 7:06 AM |
| Nov 15MST | 6:28 AM | 6:54 AM | 7:28 AM |
| Dec 1MST | 6:50 AM | 7:14 AM | 7:50 AM |
| Dec 15MST | 7:04 AM | 7:28 AM | 8:04 AM |
| Jan 1MST | 7:11 AM | 7:35 AM | 8:11 AM |
| Jan 15MST | 7:06 AM | 7:31 AM | 8:06 AM |
| Feb 1MST | 6:49 AM | 7:15 AM | 7:49 AM |
| Feb 15MST | 6:27 AM | 6:55 AM | 7:27 AM |
| Mar 1MST | 6:02 AM | 6:30 AM | 7:02 AM |
| Mar 15MDT | 6:34 AM | 7:03 AM | 7:34 AM |
| Apr 1MDT | 5:59 AM | 6:27 AM | 6:59 AM |
| Apr 15MDT | 5:31 AM | 5:58 AM | 6:31 AM |
| May 1MDT | 5:02 AM | 5:27 AM | 6:02 AM |
| May 15MDT | 4:41 AM | 5:04 AM | 5:41 AM |
| Jun 1MDT | 4:25 AM | 4:45 AM | 5:25 AM |
| Jun 15MDT | 4:20 AM | 4:38 AM | 5:20 AM |
| Jul 1MDT | 4:24 AM | 4:43 AM | 5:24 AM |
| Jul 15MDT | 4:36 AM | 4:56 AM | 5:36 AM |
| Aug 1MDT | 4:56 AM | 5:19 AM | 5:56 AM |
| Aug 15MDT | 5:15 AM | 5:40 AM | 6:15 AM |
| Sep 1MDT | 5:38 AM | 6:06 AM | 6:38 AM |
| Sep 15MDT | 5:57 AM | 6:26 AM | 6:57 AM |
| Oct 1MDT | 6:20 AM | 6:49 AM | 7:20 AM |
| Oct 15MDT | 6:40 AM | 7:08 AM | 7:40 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
ACTVT MIRL RWY 06/24 - CTAF.
Runway 06/24
3,570 × 60 ft · Asphalt
Runway 13/31
2,100 × 100 ft · Turf
Frequencies
Night at 3U8, in short
When can I log night time at 3U8?
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 5:27 PM to 6:42 AM MST.
When do landings at 3U8 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 5:54 PM to 6:15 AM MST.
When are position lights required at 3U8?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:54 PM to 7:15 AM MST.
Nearby airports
- KHVR Havre City-County Havre, MT · 27 nm
- 79S Fort Benton Fort Benton, MT · 28 nm
- 5U8 Geraldine Geraldine, MT · 35 nm
- KLTY Liberty County Chester, MT · 41 nm
- B70 Tiber Dam Tiber Dam, MT · 41 nm
- BB0 Black Butte North Winifred, 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.