B18 Alton Bay Spb & Ice Rwy night times
Alton Bay, NH · Seaplane base
Night of Nov 6 to Nov 7EST
Position lights
§ 91.2094:30 PMto6:28 AM
Sunset to sunrise. Lights on.
2130Z to 1128Z
Night logging
§ 1.15:00 PMto5:58 AM
Civil twilight. Log it as night.
2200Z to 1058Z
Night currency
§ 61.57(b)5:30 PMto5:28 AM
One hour after sunset. Landings count.
2230Z to 1028Z
Evenings at B18
When each night begins, through the year. Local time.
| Date | SunsetLights on | Civil twilight endsLog night | 1 hr after sunsetLandings count |
|---|---|---|---|
| Nov 1EST | 4:36 PM | 5:06 PM | 5:36 PM |
| Nov 15EST | 4:20 PM | 4:51 PM | 5:20 PM |
| Dec 1EST | 4:10 PM | 4:42 PM | 5:10 PM |
| Dec 15EST | 4:09 PM | 4:42 PM | 5:09 PM |
| Jan 1EST | 4:19 PM | 4:52 PM | 5:19 PM |
| Jan 15EST | 4:34 PM | 5:06 PM | 5:34 PM |
| Feb 1EST | 4:56 PM | 5:27 PM | 5:56 PM |
| Feb 15EST | 5:15 PM | 5:45 PM | 6:15 PM |
| Mar 1EST | 5:34 PM | 6:02 PM | 6:34 PM |
| Mar 15EDT | 6:51 PM | 7:20 PM | 7:51 PM |
| Apr 1EDT | 7:11 PM | 7:40 PM | 8:11 PM |
| Apr 15EDT | 7:28 PM | 7:58 PM | 8:28 PM |
| May 1EDT | 7:47 PM | 8:18 PM | 8:47 PM |
| May 15EDT | 8:03 PM | 8:36 PM | 9:03 PM |
| Jun 1EDT | 8:19 PM | 8:54 PM | 9:19 PM |
| Jun 15EDT | 8:28 PM | 9:03 PM | 9:28 PM |
| Jul 1EDT | 8:30 PM | 9:05 PM | 9:30 PM |
| Jul 15EDT | 8:24 PM | 8:58 PM | 9:24 PM |
| Aug 1EDT | 8:08 PM | 8:40 PM | 9:08 PM |
| Aug 15EDT | 7:48 PM | 8:19 PM | 8:48 PM |
| Sep 1EDT | 7:21 PM | 7:50 PM | 8:21 PM |
| Sep 15EDT | 6:55 PM | 7:24 PM | 7:55 PM |
| Oct 1EDT | 6:26 PM | 6:55 PM | 7:26 PM |
| Oct 15EDT | 6:02 PM | 6:31 PM | 7:02 PM |
Mornings at B18
When each night ends. Local time.
| Date | 1 hr before sunriseLandings stop counting | Civil twilight beginsNight logging ends | SunriseLights off |
|---|---|---|---|
| Nov 1EST | 5:21 AM | 5:51 AM | 6:21 AM |
| Nov 15EST | 5:39 AM | 6:08 AM | 6:39 AM |
| Dec 1EST | 5:58 AM | 6:26 AM | 6:58 AM |
| Dec 15EST | 6:11 AM | 6:38 AM | 7:11 AM |
| Jan 1EST | 6:18 AM | 6:45 AM | 7:18 AM |
| Jan 15EST | 6:15 AM | 6:43 AM | 7:15 AM |
| Feb 1EST | 6:01 AM | 6:31 AM | 7:01 AM |
| Feb 15EST | 5:43 AM | 6:14 AM | 6:43 AM |
| Mar 1EST | 5:22 AM | 5:53 AM | 6:22 AM |
| Mar 15EDT | 5:57 AM | 6:29 AM | 6:57 AM |
| Apr 1EDT | 5:27 AM | 5:58 AM | 6:27 AM |
| Apr 15EDT | 5:03 AM | 5:33 AM | 6:03 AM |
| May 1EDT | 4:38 AM | 5:07 AM | 5:38 AM |
| May 15EDT | 4:21 AM | 4:48 AM | 5:21 AM |
| Jun 1EDT | 4:07 AM | 4:32 AM | 5:07 AM |
| Jun 15EDT | 4:03 AM | 4:28 AM | 5:03 AM |
| Jul 1EDT | 4:08 AM | 4:32 AM | 5:08 AM |
| Jul 15EDT | 4:18 AM | 4:43 AM | 5:18 AM |
| Aug 1EDT | 4:34 AM | 5:02 AM | 5:34 AM |
| Aug 15EDT | 4:50 AM | 5:19 AM | 5:50 AM |
| Sep 1EDT | 5:09 AM | 5:39 AM | 6:09 AM |
| Sep 15EDT | 5:24 AM | 5:55 AM | 6:24 AM |
| Oct 1EDT | 5:42 AM | 6:14 AM | 6:42 AM |
| Oct 15EDT | 5:59 AM | 6:30 AM | 6:59 AM |
Lights and runways
As the FAA lists them. NOTAMs aren't included, so check current NOTAMs before you fly.
Runway 01W/19W
2,600 × 100 ft · Water
Frequencies
Night at B18, in short
When can I log night time at B18?
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 5:00 PM to 5:58 AM EST.
When do landings at B18 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 5:30 PM to 5:28 AM EST.
When are position lights required at B18?
From sunset to sunrise (14 CFR 91.209(a)). On the night of Nov 6, 2026, that was 4:30 PM to 6:28 AM EST.
Nearby airports
- KLCI Laconia Municipal Laconia, NH · 10 nm
- KDAW Skyhaven Rochester, NH · 18 nm
- 4MB Moultonborough Moultonborough, NH · 19 nm
- KCON Concord Municipal Concord, NH · 20 nm
- 2N2 Newfound Valley Bristol, NH · 23 nm
- KSFM Sanford Seacoast Regional Sanford, ME · 24 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.