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Moonless nights

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 · 01:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

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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 · 02:40 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

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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 · 04:00 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

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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.

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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.

Back to calendar ↑

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.

Back to calendar ↑

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.

Back to calendar ↑

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.

Back to calendar ↑

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.

Back to calendar ↑

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 · 18:40 → 13 Nov · 05:00 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 19:40 → 14 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 20:40 → 15 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 21:40 → 16 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 23:00 → 17 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
18 Nov · 00:00 → 18 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
19 Nov · 01:00 → 19 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
20 Nov · 02:20 → 20 Nov · 05:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
21 Nov · 03:40 → 21 Nov · 05:20 Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
22 Nov · 04:40 → 22 Nov · 05:20 Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
None. Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
None. Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
None. Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
None. Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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
None. Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 → 27 Nov · 19:00 Does not meet your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 → 28 Nov · 20:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 → 29 Nov · 21:40 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 → 30 Nov · 23:00 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 00:20 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑

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 · 01:40 Meets your minimum duration.

Times in America/Toronto · approximately 20-minute samples. Geometry only, not a weather forecast.

Back to calendar ↑
Next dark window
3 Nov – 19 Nov

17 nights in a row meeting 2 h with the moon below the horizon. 22 qualify across the 30.

Full moon
23 Nov

The usable moonless stretch collapses to nothing around it. A good week for planets, doubles and lunar detail.

Drift
+50 min / night

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 →