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Rule Dark Skies

Aspen - Dark Skies - Rocky Mountains

Aspen, Colorado, United States

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/Denver
pristinedarkskies weather icon
Next opportunity
Pristine Dark Skies (pristine)
Aspen
Tomorrow · 22:32–03:41 · 5h window
Medium confidence
49%
🌛Moon Altitude-36.4-4.3°
☁️Total Cloud Coverage0%
pristinedarkskies weather icon
Pristine Dark Skies (pristine)
Aspen
Thu, Jun 11 · 22:33–03:41
🌛Moon Altitude:-31.8--1.6°
Medium
pristinedarkskies weather icon
Pristine Dark Skies (pristine)
Aspen
Wed, Jun 17 · 22:36–03:40
🌛Moon Altitude:-29-14.6°
Low
pristinedarkskies weather icon
Pristine Dark Skies (pristine)
Aspen
Fri, Jun 19 · 02:00–03:40
🌛Moon Altitude:-29.2--21.2°
Low

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72-hour requirements breakdown

What passed or failed, hour by hour
12matching hours in the next 95 hoursJump to next match
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
America/Denver
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°
Mon, Jun 8
20:000%24135m0%38%-50°
21:000%24134m0%38%-46°
22:000%24134m0%38%-39°
23:000%24135m0%38%-30°
Tue, Jun 9
24:000%24135m0%38%-20°
01:000%24134m0%38%-8.5°
02:000%24135m0%38%2.9°
03:000%24135m0%38%14°
04:003.4%24135m0%38%25°
05:0098%24134m0%38%36°
06:0020%24134m0%38%45°
07:003.4%24134m0%38%52°
08:0058%24134m0%38%54°
09:0071%24134m0%38%52°
10:0084%24134m0%38%46°
11:0093%24135m0%38%38°
12:0051%24134m0%38%28°
13:0027%24135m1.7%38%17°
14:0012%24135m3.3%38%5.8°
15:0035%24135m5%38%-5.2°
16:0070%24135m12%38%-16°
17:0054%24135m19%38%-26°
18:0053%24135m26%29%-34°
19:002.1%24135m37%29%-41°
20:0018%24135m19%29%-44°
21:0086%24135m0%29%-43°
22:0080%21750m0%29%-39°
23:0084%24135m0%29%-32°
Wed, Jun 10
24:0077%23122m0%29%-23°
01:0017%24135m0%29%-13°
02:0066%24135m0%29%-1.7°
03:002.4%24135m0%29%9.6°
04:000%24135m0%29%21°
05:000%24135m0%29%32°
06:000%24135m0%29%43°
07:000%24135m0%29%52°
08:000%24134m0%29%59°
09:000%24135m0%29%61°
10:000%24134m0%29%57°
11:000%24135m0%29%50°
12:000%24135m0%29%40°
13:000%24134m0%29%30°
14:000%24134m0%29%19°
15:000%24134m0%29%7.6°
16:001.7%24134m0%29%-3.2°
17:000%24135m0%29%-13°
18:000%24135m0%19%-22°
19:000%24135m0%19%-30°
20:000%24134m0%19%-35°
21:000%24134m0%19%-38°
22:000%24134m0%19%-36°
23:000%24134m0%19%-32°
Thu, Jun 11
24:000%24134m0%19%-25°
01:000%24134m0%19%-16°
02:000%24134m0%19%-6.4°
03:000%24134m0%19%4.3°
04:001.3%24134m0%19%15°
05:001.4%24134m0%19%27°
06:000%24134m0%19%38°
07:000%24134m0%19%49°
08:000%24135m0%19%59°
09:000%24135m0%19%65°
10:000%24134m0%19%67°
11:000%24135m0%19%62°
12:000%24135m0%19%53°
13:000%24134m0%19%43°
14:000%24134m0%19%32°
15:000%24134m0%19%21°
16:000%24135m0%19%9.9°
17:000%24134m0%19%-0.54°
18:000%24134m0%10%-10°
19:000%24134m0%10%-19°
20:000%24134m0%10%-26°
21:000%24134m0%10%-30°
22:000%24135m0%10%-32°
23:000%24135m0%10%-30°
Fri, Jun 12
24:000%24134m0%10%-26°
01:000%24135m0%10%-19°
02:000%24135m0%10%-11°
03:000%24134m0%10%-1.6°
04:000%24135m0%10%8.8°
05:000%24135m0%10%20°
06:000%24134m0%10%31°
07:001.2%24134m0%10%42°
08:002.3%24135m0%10%53°
09:003.5%24135m0%10%63°
10:004%24135m0%10%71°
11:004.4%24135m0%10%72°
12:004.9%24135m0%10%66°
13:0037%24135m0%10%56°
14:0068%24135m0%10%45°
15:00100%24135m0%10%34°
16:00100%24135m0%10%23°
17:00100%24135m0%10%13°
18:00100%24135m0%4.5%2.5°
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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