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Rule Dark Skies

Fairbanks - Dark Skies - Alaska

Fairbanks, Alaska, 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/Anchorage
Next opportunity
Excellent Dark Skies (pristine)
Fairbanks
Wed, Mar 18 · 24:00–05:00 · 5h window
Medium confidence
44%
🌛Moon Altitude-28.5--22.4°
☁️Total Cloud Coverage6.2-18.6%
starry-night weather icon
Pristine Dark Skies (pristine)
Fairbanks
Thu, Mar 19 · 23:03–04:51
🌛Moon Altitude:-14.9--4.4°
Medium
starry-night weather icon
Pristine Dark Skies (pristine)
Fairbanks
Fri, Mar 20 · 23:08–04:46
🌛Moon Altitude:-8.6-5.9°
Low
starry-night weather icon
Pristine Dark Skies (pristine)
Fairbanks
Sat, Mar 21 · 23:12–04:41
🌛Moon Altitude:-2.9-16.1°
Low
starry-night weather icon
Good Dark Skies
Fairbanks
Mon, Mar 23 · 23:22–24:00
🌛Moon Altitude:34.3°
Low
starry-night weather icon
Good Dark Skies
Fairbanks
Tue, Mar 24 · 03:00–04:30
🌛Moon Altitude:8-12°
Low

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72-hour requirements breakdown

What passed or failed, hour by hour
5matching hours in the next 95 hoursJump to next match
OR logic: one branch per group is enough
Meets requirement
Misses requirement
Time
America/Anchorage
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°
Sat, Mar 14
23:0069%8093m0%14%-46°
Sun, Mar 15
24:0085%5623m0%14%-45°
01:0095%3688m0%14%-42°
02:00100%2121m0%14%-37°
03:00100%1464m0%14%-32°
04:00100%1321m0%14%-26°
05:00100%1322m0%14%-20°
06:00100%1486m0%14%-13°
07:00100%1402m0%14%-7.5°
08:00100%1706m0%14%-2.4°
09:00100%1824m0%14%1.8°
10:0098%2373m0%14%4.8°
11:0090%3633m3.6%14%6.5°
12:0097%5156m3.2%14%6.6°
13:0095%10752m4.8%14%5.4°
14:0096%11534m3.2%14%2.7°
15:0091%5575m1.6%14%-1.2°
16:0096%1714m0%7.9%-6°
17:00100%975m0%7.9%-11°
18:00100%397m0%7.9%-17°
19:00100%325m0%7.9%-23°
20:0089%5236m0%7.9%-29°
21:0024%10942m0%7.9%-34°
22:0067%24135m0%7.9%-38°
23:0089%24135m0%7.9%-40°
Mon, Mar 16
24:0086%24135m0%7.9%-41°
01:0059%24135m0%7.9%-40°
02:0041%24135m0%7.9%-36°
03:0049%14474m0%7.9%-32°
04:0060%12603m0%7.9%-26°
05:0069%12219m0%7.9%-20°
06:0097%12715m0%7.9%-14°
07:0095%12704m0%7.9%-7.3°
08:0053%17475m0%7.9%-1.5°
09:0026%18804m0%7.9%3.7°
10:0036%19171m0%7.9%7.8°
11:0058%24134m0%7.9%11°
12:0091%20299m0%7.9%12°
13:0098%13152m0.001%7.9%12°
14:00100%9041m0%7.9%10°
15:00100%7813m0%7.9%7.3°
16:00100%7055m0%2.9%3.1°
17:00100%6398m0%2.9%-1.9°
18:00100%7795m0%2.9%-7.6°
19:0099%24135m0%2.9%-14°
20:0096%24135m0%2.9%-19°
21:00100%24134m0%2.9%-25°
22:00100%24135m0%2.9%-30°
23:00100%24135m0%2.9%-33°
Tue, Mar 17
24:00100%24135m0%2.9%-35°
01:00100%24134m0%2.9%-35°
02:00100%24134m0%2.9%-33°
03:00100%24134m0%2.9%-30°
04:00100%24134m0%2.9%-25°
05:00100%24135m0%2.9%-19°
06:00100%24134m0%2.9%-13°
07:00100%24134m0%2.9%-6.6°
08:00100%24135m0%2.9%-0.35°
09:00100%24135m0%2.9%5.5°
10:00100%24135m0%2.9%11°
11:00100%24135m0%2.9%15°
12:00100%24134m0%2.9%17°
13:00100%12340m0%2.9%18°
14:00100%4263m0%2.9%18°
15:00100%5508m0%2.9%16°
16:00100%5769m0%0.4%12°
17:00100%5535m0%0.4%7.9°
18:00100%5508m0%0.4%2.6°
19:0099%5718m0.001%0.4%-3.2°
20:0096%7909m0%0.4%-9.1°
21:0075%10537m0%0.4%-15°
22:0068%9322m0%0.4%-20°
23:0050%8770m0%0.4%-24°
Wed, Mar 18
24:0017%19622m0%0.4%-27°
01:0010%24135m0.001%0.4%-29°
02:006.2%24134m0%0.4%-28°
03:0014%24135m0%0.4%-26°
04:0019%23718m0%0.4%-22°
05:0032%23857m0%0.4%-18°
06:0045%23996m0%0.4%-12°
07:0058%24135m0%0.4%-5.6°
08:0072%23589m0%0.4%0.86°
09:0086%23044m0%0.4%7.1°
10:00100%22498m0%0.4%13°
11:0095%16689m0%0.4%18°
12:0089%10880m0%0.4%22°
13:0084%5071m0%0.4%24°
14:0084%5058m0%0.4%25°
15:0084%5044m0%0.4%24°
16:0084%5031m0%0.2%22°
17:0077%5103m0%0.2%18°
18:0071%5176m0%0.2%13°
19:0065%5249m0%0.2%7.5°
20:0077%11544m0%0.2%1.6°
21:0088%17840m0%0.2%-4.2°
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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