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Rule Dark Skies

Whitehorse - Dark Skies - Yukon

Whitehorse, Yukon, Canada

Moonless nights with crystal-clear skies for deep-sky photography

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Whitehorse
Next opportunity
Pristine Dark Skies (pristine)
Whitehorse
Sun, Apr 19 · 02:00–02:09 · 1h window
Medium confidence
49%
🌛Moon Altitude-3°
☁️Total Cloud Coverage5%

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72-hour requirements breakdown

What passed or failed, hour by hour
3matching hours in the next 91 hoursJump to next match
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
America/Whitehorse
Astronomical Night
Any
Total Cloud Coverage
≤ 20.0%
Visibility
≥ 12000.0m
Precipitation Chance
≤ 10.0%
Moon Illumination
OR1·B1
≤ 35.0%
Moon Altitude
OR1·B2
≤ 10.0°
Tue, Apr 14
22:00✕5%24135m0%5.3%-25°
23:00✕5%24135m0%5.3%-28°
Wed, Apr 15
24:00✓5.5%24133m0%5.3%-29°
01:00✓18%24134m0%5.3%-28°
02:00✓20%19537m0%5.3%-26°
03:00✓21%16261m0%5.3%-21°
04:00✕24%20913m0%5.3%-15°
05:00✕29%23811m0%5.3%-8.4°
06:00✕28%20337m0%5.3%-1.2°
07:00✕34%10478m0%5.3%6.2°
08:00✕99%7082m0%5.3%13°
09:00✕100%13917m0%5.3%20°
10:00✕100%24135m0%5.3%25°
11:00✕70%24134m0%5.3%30°
12:00✕49%24134m85%5.3%32°
13:00✕62%24135m87%5.3%32°
14:00✕78%19553m90%5.3%31°
15:00✕72%24134m87%5.3%27°
16:00✕86%24134m84%5.3%22°
17:00✕100%24134m82%1.4%16°
18:00✕100%24134m54%1.4%9.4°
19:00✕100%19306m27%1.4%2.6°
20:00✕100%24135m0%1.4%-4.1°
21:00✕100%24134m0%1.4%-10°
22:00✕100%24135m0%1.4%-16°
23:00✕100%22774m0%1.4%-20°
Thu, Apr 16
24:00✓100%22644m0%1.4%-22°
01:00✓100%22713m0%1.4%-23°
02:00✓100%8006m0%1.4%-21°
03:00✓100%7967m0%1.4%-18°
04:00✕76%23497m0%1.4%-13°
05:00✕68%24135m0%1.4%-7.6°
06:00✕61%24134m0%1.4%-0.92°
07:00✕48%24135m0%1.4%6.2°
08:00✕6.4%24134m0%1.4%14°
09:00✕5%24134m0%1.4%21°
10:00✕5%24135m0%1.4%27°
11:00✕6.7%24135m0%1.4%33°
12:00✕40%24135m0%1.4%37°
13:00✕49%24135m0%1.4%39°
14:00✕88%24135m0%1.4%39°
15:00✕91%24135m0%1.4%37°
16:00✕96%24134m0%1.4%33°
17:00✕90%24134m0%0%27°
18:00✕100%24134m0%0%21°
19:00✕98%24135m0%0%14°
20:00✕100%24135m0%0%7.4°
21:00✕100%24134m0%0%0.86°
22:00✕100%24135m0%0%-5°
23:00✕100%24134m0%0%-9.9°
Fri, Apr 17
24:00✕100%24134m0%0%-13°
01:00✓100%24135m0%0%-16°
02:00✓100%24134m0%0%-16°
03:00✕100%24134m0%0%-14°
04:00✕100%24135m0%0%-11°
05:00✕100%24135m0%0%-6.4°
06:00✕100%23804m1.6%0%-0.68°
07:00✕100%18664m3.2%0%5.9°
08:00✕100%21058m4.8%0%13°
09:00✕62%24101m16%0%20°
10:00✕58%24134m28%0%27°
11:00✕65%24135m39%0%34°
12:00✕100%24134m26%0%40°
13:00✕100%24135m14%0%44°
14:00✕100%23808m0.91%0%46°
15:00✕100%24064m0.61%0%45°
16:00✕100%24134m0.3%0%43°
17:00✕100%24135m0%1.4%38°
18:00✕100%24134m0%1.4%32°
19:00✕100%24134m0%1.4%26°
20:00✕100%24134m0%1.4%19°
21:00✕100%24135m0%1.4%12°
22:00✕100%24135m0%1.4%5.7°
23:00✕100%24135m0%1.4%0.12°
Sat, Apr 18
24:00✕100%24135m0%1.4%-4.5°
01:00✓100%24135m0%1.4%-7.8°
02:00✓100%24135m0%1.4%-9.6°
03:00✕100%24135m0%1.4%-9.7°
04:00✕100%24135m0%1.4%-8.2°
05:00✕100%24135m0%1.4%-5°
06:00✕100%24135m0%1.4%-0.54°
07:00✕100%24135m0%1.4%5.1°
08:00✕100%24135m0%1.4%11°
09:00✕100%24135m27%1.4%18°
10:00✕100%24135m55%1.4%26°
11:00✕100%24135m82%1.4%33°
12:00✕100%24135m65%1.4%39°
13:00✕100%24135m47%1.4%45°
14:00✕100%24135m30%1.4%49°
15:00✕73%24135m28%1.4%51°
16:00✕47%24135m25%1.4%51°
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.

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