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Rule Dark Skies

Saas-Fee - Dark Skies - Alps

Saas-Fee, Valais, Switzerland

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

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich
Next opportunity
Pristine Dark Skies (pristine)
Saas-Fee
Sat, Mar 7 · 20:02–01:00 · 5h window
Low confidence
38%
🌛Moon Altitude-30.5-6.9°
☁️Total Cloud Coverage4.9-5.1%

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72-hour requirements breakdown

What passed or failed, hour by hour
5matching hours in the next 92 hoursJump to next match
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
Europe/Zurich
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°
Wed, Mar 4
05:00✓1.5%24134m0%99%23°
06:00✕1.5%24134m0%99%14°
07:00✕1.5%24134m0%99%3.3°
08:00✕1.5%24135m0%99%-6.9°
09:00✕1.5%24135m0%99%-17°
10:00✕1.5%24134m0%99%-26°
11:00✕16%24135m0%99%-34°
12:00✕54%23742m0%99%-40°
13:00✕70%15192m0%99%-44°
14:00✕82%12334m0%99%-43°
15:00✕90%12234m0%99%-40°
16:00✕75%12461m0%99%-34°
17:00✕87%4302m0%99%-26°
18:00✕80%15403m0%99%-17°
19:00✓69%24135m0%99%-6.9°
20:00✓32%24135m0%99%3°
21:00✓31%23619m0%99%13°
22:00✓81%24134m0%99%22°
23:00✓96%24135m0%99%30°
Thu, Mar 5
24:00✓87%21160m0%99%36°
01:00✓95%24087m0%96%40°
02:00✓53%24135m0%96%40°
03:00✓30%24134m0%96%38°
04:00✓9.5%24134m0%96%32°
05:00✓8.3%24134m0%96%25°
06:00✕52%24135m0%96%16°
07:00✕97%24134m0%96%6°
08:00✕92%23577m0%96%-4.2°
09:00✕97%21422m0%96%-14°
10:00✕100%20944m0%96%-24°
11:00✕99%20777m0%96%-34°
12:00✕100%17309m0%96%-42°
13:00✕100%5115m0%96%-48°
14:00✕100%7626m0%96%-50°
15:00✕99%10743m0%96%-49°
16:00✕98%24134m0%96%-44°
17:00✕94%21502m0%96%-37°
18:00✕96%17413m0%96%-28°
19:00✓95%15620m0%96%-18°
20:00✓100%17463m0%96%-8.5°
21:00✓90%20942m0%96%1.3°
22:00✓100%24134m0%96%11°
23:00✓90%24134m0%96%19°
Fri, Mar 6
24:00✓92%24135m0%96%26°
01:00✓99%24134m0%90%32°
02:00✓100%24135m0%90%34°
03:00✓100%24135m0%90%34°
04:00✓100%24134m0%90%31°
05:00✓100%24134m0%90%25°
06:00✕100%24134m0%90%17°
07:00✕100%24135m0%90%8.4°
08:00✕100%24134m0%90%-1.3°
09:00✕100%24135m0%90%-11°
10:00✕100%24134m0%90%-22°
11:00✕100%24134m0%90%-32°
12:00✕95%20377m0%90%-41°
13:00✕100%17223m0%90%-49°
14:00✕100%16214m0.3%90%-54°
15:00✕96%16413m0.61%90%-56°
16:00✕86%20709m0.91%90%-53°
17:00✕87%23539m0.61%90%-47°
18:00✕100%24134m0.3%90%-39°
19:00✕99%24135m0%90%-30°
20:00✓100%24135m0%90%-20°
21:00✓100%24134m0%90%-9.8°
22:00✓100%24134m0%90%-0.18°
23:00✓100%24134m0%90%8.8°
Sat, Mar 7
24:00✓100%24135m0%90%17°
01:00✓87%24135m0%84%23°
02:00✓85%24135m0%84%27°
03:00✓80%24135m0%84%29°
04:00✓49%24134m0%84%28°
05:00✓63%24135m0%84%24°
06:00✕85%24134m0%84%18°
07:00✕28%24135m0%84%11°
08:00✕42%24135m0%84%1.7°
09:00✕56%24135m0%84%-7.9°
10:00✕69%24135m0%84%-18°
11:00✕74%24135m13%84%-28°
12:00✕79%24135m26%84%-38°
13:00✕85%24135m39%84%-48°
14:00✕82%17428m26%84%-56°
15:00✕79%10721m13%84%-60°
16:00✕77%4013m0%84%-61°
17:00✕53%10721m0%84%-57°
18:00✕29%17428m0%84%-49°
19:00✕4.8%24135m0%84%-40°
20:00✓4.9%24135m0%84%-31°
21:00✓5%24135m0%84%-21°
22:00✓5.1%24135m0%84%-11°
23:00✓5.1%24135m0%84%-1.5°
Sun, Mar 8
24:00✓5.1%24135m0%84%6.9°
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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