Rule
Dark Skies
Estes Park - Dark Skies - Rocky Mountains
Estes Park, 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
Next opportunity
Pristine Dark Skies (pristine)
Estes Park
Thu, Feb 26 · 03:00–06:00 · 3h window
Low confidence
37%
🌛Moon Altitude-10.4-6°
☁️Total Cloud Coverage0%
Pristine Dark Skies (pristine) at Sunrise
Estes Park
Thu, Feb 26 · 06:00–08:00
🌛Moon Altitude:-20.2--16.3°
Low
Pristine Dark Skies (pristine)
Estes Park
Thu, Feb 26 · 08:00–14:00
🌛Moon Altitude:-21.6-4.9°
Low
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72-hour requirements breakdown
What passed or failed, hour by hourOR 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° |
|---|---|---|---|---|---|---|
| Sat, Feb 21 | ||||||
| 18:00 | ✓ | 7.9% | 24135m | 0% | 28% | 51° |
| 19:00 | ✓ | 14% | 24134m | 0% | 28% | 41° |
| 20:00 | ✓ | 35% | 24135m | 0% | 28% | 31° |
| 21:00 | ✓ | 9.3% | 24134m | 0% | 28% | 20° |
| 22:00 | ✓ | 21% | 24135m | 0% | 28% | 9.1° |
| 23:00 | ✓ | 4.5% | 24134m | 0% | 28% | -1.2° |
| Sun, Feb 22 | ||||||
| 24:00 | ✓ | 0.8% | 24134m | 0% | 28% | -11° |
| 01:00 | ✓ | 0.8% | 24134m | 0% | 28% | -19° |
| 02:00 | ✓ | 5% | 24135m | 0% | 28% | -26° |
| 03:00 | ✓ | 5% | 24135m | 0% | 28% | -30° |
| 04:00 | ✓ | 9.6% | 24135m | 0% | 28% | -32° |
| 05:00 | ✓ | 12% | 24134m | 0% | 28% | -30° |
| 06:00 | ✓ | 34% | 24135m | 0% | 28% | -26° |
| 07:00 | ✓ | 6.5% | 24135m | 0% | 28% | -19° |
| 08:00 | ✓ | 12% | 24135m | 0% | 28% | -11° |
| 09:00 | ✓ | 99% | 24135m | 0% | 28% | -1.1° |
| 10:00 | ✓ | 100% | 24135m | 0% | 28% | 9.3° |
| 11:00 | ✓ | 60% | 24135m | 0% | 28% | 20° |
| 12:00 | ✓ | 9.2% | 24135m | 0% | 28% | 31° |
| 13:00 | ✓ | 0.8% | 24135m | 0% | 28% | 42° |
| 14:00 | ✓ | 0% | 24134m | 0% | 28% | 53° |
| 15:00 | ✓ | 0.8% | 24134m | 0% | 28% | 63° |
| 16:00 | ✓ | 0% | 24135m | 0% | 28% | 69° |
| 17:00 | ✓ | 0.8% | 24134m | 0% | 38% | 69° |
| 18:00 | ✓ | 0.8% | 24134m | 0% | 38% | 63° |
| 19:00 | ✓ | 4.2% | 24135m | 0% | 38% | 54° |
| 20:00 | ✓ | 3.4% | 24134m | 0% | 38% | 43° |
| 21:00 | ✓ | 5% | 24134m | 0% | 38% | 33° |
| 22:00 | ✓ | 5.5% | 24134m | 0% | 38% | 22° |
| 23:00 | ✓ | 38% | 24135m | 0% | 38% | 11° |
| Mon, Feb 23 | ||||||
| 24:00 | ✓ | 65% | 24134m | 0% | 38% | 1.4° |
| 01:00 | ✓ | 97% | 24135m | 0% | 38% | -7.7° |
| 02:00 | ✓ | 100% | 24135m | 0% | 38% | -16° |
| 03:00 | ✓ | 100% | 24135m | 0% | 38% | -22° |
| 04:00 | ✓ | 100% | 24135m | 0% | 38% | -25° |
| 05:00 | ✓ | 100% | 24135m | 0% | 38% | -27° |
| 06:00 | ✓ | 91% | 24134m | 0% | 38% | -25° |
| 07:00 | ✓ | 71% | 24135m | 0% | 38% | -21° |
| 08:00 | ✓ | 74% | 24135m | 0% | 38% | -14° |
| 09:00 | ✓ | 67% | 24135m | 0% | 38% | -6.3° |
| 10:00 | ✓ | 47% | 24135m | 0% | 38% | 2.9° |
| 11:00 | ✓ | 5% | 24134m | 0% | 38% | 13° |
| 12:00 | ✓ | 22% | 24135m | 0% | 38% | 24° |
| 13:00 | ✓ | 9.8% | 24134m | 0% | 38% | 35° |
| 14:00 | ✓ | 24% | 24134m | 0% | 38% | 46° |
| 15:00 | ✓ | 100% | 24135m | 0% | 38% | 56° |
| 16:00 | ✓ | 100% | 24135m | 0% | 38% | 66° |
| 17:00 | ✓ | 100% | 24134m | 0% | 50% | 74° |
| 18:00 | ✓ | 100% | 24135m | 0% | 50% | 73° |
| 19:00 | ✓ | 100% | 24134m | 0% | 50% | 66° |
| 20:00 | ✓ | 100% | 24134m | 0% | 50% | 56° |
| 21:00 | ✓ | 92% | 24135m | 0% | 50% | 45° |
| 22:00 | ✓ | 100% | 24135m | 0% | 50% | 34° |
| 23:00 | ✓ | 98% | 24135m | 0% | 50% | 24° |
| Tue, Feb 24 | ||||||
| 24:00 | ✓ | 95% | 24135m | 0% | 50% | 13° |
| 01:00 | ✓ | 100% | 23993m | 0% | 50% | 3.7° |
| 02:00 | ✓ | 93% | 24135m | 0% | 50% | -5° |
| 03:00 | ✓ | 80% | 24134m | 0% | 50% | -13° |
| 04:00 | ✓ | 84% | 24135m | 0% | 50% | -18° |
| 05:00 | ✓ | 48% | 24135m | 0% | 50% | -22° |
| 06:00 | ✓ | 46% | 24135m | 0% | 50% | -23° |
| 07:00 | ✓ | 49% | 24135m | 0% | 50% | -22° |
| 08:00 | ✓ | 85% | 24134m | 0% | 50% | -18° |
| 09:00 | ✓ | 75% | 24134m | 0% | 50% | -11° |
| 10:00 | ✓ | 94% | 24134m | 0% | 50% | -3.7° |
| 11:00 | ✓ | 28% | 24134m | 0% | 50% | 5.2° |
| 12:00 | ✓ | 49% | 24135m | 7.4% | 50% | 15° |
| 13:00 | ✓ | 25% | 24135m | 15% | 50% | 25° |
| 14:00 | ✓ | 3.5% | 24134m | 22% | 50% | 36° |
| 15:00 | ✓ | 14% | 24134m | 27% | 50% | 47° |
| 16:00 | ✓ | 36% | 24135m | 32% | 50% | 58° |
| 17:00 | ✓ | 25% | 24134m | 38% | 61% | 68° |
| 18:00 | ✓ | 23% | 21354m | 44% | 61% | 76° |
| 19:00 | ✓ | 35% | 19483m | 50% | 61% | 76° |
| 20:00 | ✓ | 100% | 18866m | 56% | 61% | 68° |
| 21:00 | ✓ | 74% | 18744m | 68% | 61% | 58° |
| 22:00 | ✓ | 100% | 23568m | 79% | 61% | 47° |
| 23:00 | ✓ | 100% | 24135m | 91% | 61% | 36° |
| Wed, Feb 25 | ||||||
| 24:00 | ✓ | 100% | 16907m | 88% | 61% | 25° |
| 01:00 | ✓ | 100% | 9679m | 85% | 61% | 15° |
| 02:00 | ✓ | 100% | 2451m | 82% | 61% | 5.4° |
| 03:00 | ✓ | 93% | 7351m | 87% | 61% | -3.2° |
| 04:00 | ✓ | 87% | 12250m | 91% | 61% | -11° |
| 05:00 | ✓ | 80% | 17150m | 96% | 61% | -16° |
| 06:00 | ✓ | 87% | 13289m | 96% | 61% | -20° |
| 07:00 | ✓ | 93% | 9429m | 96% | 61% | -21° |
| 08:00 | ✓ | 100% | 5569m | 96% | 61% | -20° |
| 09:00 | ✓ | 100% | 4038m | 97% | 61% | -16° |
| 10:00 | ✓ | 99% | 2507m | 98% | 61% | -10° |
| 11:00 | ✓ | 99% | 976m | 99% | 61% | -2.9° |
| 12:00 | ✓ | 67% | 8696m | 84% | 61% | 5.8° |
| 13:00 | ✓ | 36% | 16415m | 70% | 61% | 15° |
| 14:00 | ✓ | 4.9% | 24135m | 55% | 61% | 26° |
| 15:00 | ✓ | 3.5% | 24135m | 56% | 61% | 36° |
| 16:00 | ✓ | 2.2% | 24135m | 58% | 61% | 47° |
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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