Pick the dates from geometry.
Moon and darkness timing can be calculated ahead; weather becomes less certain further out. Choose the window now and check the cloud when it gets close. Thirty nights at Thetford-Mines.
Dark windows over the next 30 nights
Window length in hours · same 0–24 hour scale · geometry, not weather
3 Nov · Thetford-Mines
Waning crescent · 25% lit at local midnight.
Astronomical darkness
3 Nov · 18:20 → 4 Nov · 05:00 (10.7h)
Moon below horizon during darkness
7.0h total.
Longest window for your filters
3 Nov · 18:20 → 4 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
4 Nov · Thetford-Mines
Waning crescent · 16% lit at local midnight.
Astronomical darkness
4 Nov · 18:20 → 5 Nov · 05:00 (10.7h)
Moon below horizon during darkness
8.3h total.
Longest window for your filters
4 Nov · 18:20 → 5 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
5 Nov · Thetford-Mines
Waning crescent · 9% lit at local midnight.
Astronomical darkness
5 Nov · 18:20 → 6 Nov · 05:00 (10.7h)
Moon below horizon during darkness
9.7h total.
Longest window for your filters
5 Nov · 18:20 → 6 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
6 Nov · Thetford-Mines
Waning crescent · 4% lit at local midnight.
Astronomical darkness
6 Nov · 18:20 → 7 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
6 Nov · 18:20 → 7 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
7 Nov · Thetford-Mines
Waning crescent · 1% lit at local midnight.
Astronomical darkness
7 Nov · 18:20 → 8 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
7 Nov · 18:20 → 8 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
8 Nov · Thetford-Mines
New moon · 0% lit at local midnight.
Astronomical darkness
8 Nov · 18:20 → 9 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
8 Nov · 18:20 → 9 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
9 Nov · Thetford-Mines
Waxing crescent · 1% lit at local midnight.
Astronomical darkness
9 Nov · 18:20 → 10 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
9 Nov · 18:20 → 10 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
10 Nov · Thetford-Mines
Waxing crescent · 4% lit at local midnight.
Astronomical darkness
10 Nov · 18:20 → 11 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
10 Nov · 18:20 → 11 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
11 Nov · Thetford-Mines
Waxing crescent · 9% lit at local midnight.
Astronomical darkness
11 Nov · 18:20 → 12 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.7h total.
Longest window for your filters
11 Nov · 18:20 → 12 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
12 Nov · Thetford-Mines
Waxing crescent · 14% lit at local midnight.
Astronomical darkness
12 Nov · 18:20 → 13 Nov · 05:00 (10.7h)
Moon below horizon during darkness
10.3h total.
Longest window for your filters
12 Nov · 18:20 → 13 Nov · 05:00 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
13 Nov · Thetford-Mines
Waxing crescent · 21% lit at local midnight.
Astronomical darkness
13 Nov · 18:00 → 14 Nov · 05:20 (11.3h)
Moon below horizon during darkness
9.7h total.
Longest window for your filters
13 Nov · 18:00 → 14 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
14 Nov · Thetford-Mines
Waxing crescent · 30% lit at local midnight.
Astronomical darkness
14 Nov · 18:00 → 15 Nov · 05:20 (11.3h)
Moon below horizon during darkness
8.7h total.
Longest window for your filters
14 Nov · 18:00 → 15 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
15 Nov · Thetford-Mines
Waxing crescent · 39% lit at local midnight.
Astronomical darkness
15 Nov · 18:00 → 16 Nov · 05:20 (11.3h)
Moon below horizon during darkness
7.7h total.
Longest window for your filters
15 Nov · 18:00 → 16 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
16 Nov · Thetford-Mines
First quarter · 48% lit at local midnight.
Astronomical darkness
16 Nov · 18:00 → 17 Nov · 05:20 (11.3h)
Moon below horizon during darkness
6.3h total.
Longest window for your filters
16 Nov · 18:00 → 17 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
17 Nov · Thetford-Mines
First quarter · 58% lit at local midnight.
Astronomical darkness
17 Nov · 18:00 → 18 Nov · 05:20 (11.3h)
Moon below horizon during darkness
5.3h total.
Longest window for your filters
17 Nov · 18:00 → 18 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
18 Nov · Thetford-Mines
Waxing gibbous · 68% lit at local midnight.
Astronomical darkness
18 Nov · 18:00 → 19 Nov · 05:20 (11.3h)
Moon below horizon during darkness
4.3h total.
Longest window for your filters
18 Nov · 18:00 → 19 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
19 Nov · Thetford-Mines
Waxing gibbous · 77% lit at local midnight.
Astronomical darkness
19 Nov · 18:00 → 20 Nov · 05:20 (11.3h)
Moon below horizon during darkness
3.0h total.
Longest window for your filters
19 Nov · 18:00 → 20 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
20 Nov · Thetford-Mines
Waxing gibbous · 86% lit at local midnight.
Astronomical darkness
20 Nov · 18:00 → 21 Nov · 05:20 (11.3h)
Moon below horizon during darkness
1.7h total.
Longest window for your filters
20 Nov · 18:00 → 21 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
21 Nov · Thetford-Mines
Waxing gibbous · 92% lit at local midnight.
Astronomical darkness
21 Nov · 18:00 → 22 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.7h total.
Longest window for your filters
21 Nov · 18:00 → 22 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
22 Nov · Thetford-Mines
Waxing gibbous · 97% lit at local midnight.
Astronomical darkness
22 Nov · 18:00 → 23 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.0h total.
Longest window for your filters
22 Nov · 18:00 → 23 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
23 Nov · Thetford-Mines
Full moon · 100% lit at local midnight.
Astronomical darkness
23 Nov · 18:00 → 24 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.0h total.
Longest window for your filters
23 Nov · 18:00 → 24 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
24 Nov · Thetford-Mines
Full moon · 99% lit at local midnight.
Astronomical darkness
24 Nov · 18:00 → 25 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.0h total.
Longest window for your filters
24 Nov · 18:00 → 25 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
25 Nov · Thetford-Mines
Waning gibbous · 97% lit at local midnight.
Astronomical darkness
25 Nov · 18:00 → 26 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.0h total.
Longest window for your filters
25 Nov · 18:00 → 26 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
26 Nov · Thetford-Mines
Waning gibbous · 91% lit at local midnight.
Astronomical darkness
26 Nov · 18:00 → 27 Nov · 05:20 (11.3h)
Moon below horizon during darkness
0.0h total.
Longest window for your filters
26 Nov · 18:00 → 27 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
27 Nov · Thetford-Mines
Waning gibbous · 83% lit at local midnight.
Astronomical darkness
27 Nov · 18:00 → 28 Nov · 05:20 (11.3h)
Moon below horizon during darkness
1.0h total.
Longest window for your filters
27 Nov · 18:00 → 28 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
28 Nov · Thetford-Mines
Waning gibbous · 74% lit at local midnight.
Astronomical darkness
28 Nov · 18:00 → 29 Nov · 05:20 (11.3h)
Moon below horizon during darkness
2.3h total.
Longest window for your filters
28 Nov · 18:00 → 29 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
29 Nov · Thetford-Mines
Waning gibbous · 63% lit at local midnight.
Astronomical darkness
29 Nov · 18:00 → 30 Nov · 05:20 (11.3h)
Moon below horizon during darkness
3.7h total.
Longest window for your filters
29 Nov · 18:00 → 30 Nov · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
30 Nov · Thetford-Mines
Last quarter · 52% lit at local midnight.
Astronomical darkness
30 Nov · 18:00 → 1 Dec · 05:20 (11.3h)
Moon below horizon during darkness
5.0h total.
Longest window for your filters
30 Nov · 18:00 → 1 Dec · 05:20 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
1 Dec · Thetford-Mines
Last quarter · 41% lit at local midnight.
Astronomical darkness
1 Dec · 18:00 → 2 Dec · 05:40 (11.7h)
Moon below horizon during darkness
6.3h total.
Longest window for your filters
1 Dec · 18:00 → 2 Dec · 05:40 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
2 Dec · Thetford-Mines
Waning crescent · 30% lit at local midnight.
Astronomical darkness
2 Dec · 18:00 → 3 Dec · 05:40 (11.7h)
Moon below horizon during darkness
7.7h total.
Longest window for your filters
2 Dec · 18:00 → 3 Dec · 05:40 Meets your minimum duration.
Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.
30 nights in a row meeting 4 h with any moon. 30 qualify across the 30.
The usable moonless stretch collapses to nothing around it. A good week for planets, doubles and lunar detail.
The moon moves about 12° east a day, so the dark window shifts roughly fifty minutes later each night. A Friday plan is not a Saturday plan.
Plan somewhere else
Sky geometry only — no weather claims beyond the seven-night forecast. How to plan around the moon →