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 19 · 20:00–21:00 · 1h window
Medium confidence
54%
🌛Moon Altitude5°
☁️Total Cloud Coverage1.9%
Good Dark Skies
Estes Park
Fri, Feb 20 · 20:00–06:00
🌛Moon Altitude:-37.6-17.8°
Low
Excellent Dark Skies (pristine) at Sunrise
Estes Park
Sat, Feb 21 · 06:00–08:00
🌛Moon Altitude:-25.1--16.4°
Low
Pristine Dark Skies (pristine)
Estes Park
Sat, Feb 21 · 08:00–09:00
🌛Moon Altitude:-6.6°
Medium
Pristine Dark Skies (pristine)
Estes Park
Sat, Feb 21 · 14:00–24:00
🌛Moon Altitude:-1.2-64.4°
Low
Good Dark Skies
Estes Park
Mon, Feb 23 · 24:00–01:00
🌛Moon Altitude:1.4°
Medium
Pristine Dark Skies (pristine)
Estes Park
Tue, Feb 24 · 05:00–06:00
🌛Moon Altitude:-22°
Medium
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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° |
|---|---|---|---|---|---|---|
| Mon, Feb 16 | ||||||
| 06:00 | ✓ | 100% | 24134m | 0% | 1.2% | -6.6° |
| 07:00 | ✓ | 91% | 24135m | 0% | 1.2% | 3.7° |
| 08:00 | ✓ | 99% | 24135m | 0% | 1.2% | 13° |
| 09:00 | ✓ | 99% | 24135m | 0% | 1.2% | 21° |
| 10:00 | ✓ | 91% | 24134m | 0% | 1.2% | 28° |
| 11:00 | ✓ | 100% | 24135m | 0% | 1.2% | 32° |
| 12:00 | ✓ | 100% | 24134m | 0% | 1.2% | 33° |
| 13:00 | ✓ | 100% | 24134m | 0% | 1.2% | 31° |
| 14:00 | ✓ | 100% | 24135m | 0% | 1.2% | 26° |
| 15:00 | ✓ | 100% | 21341m | 0% | 1.2% | 19° |
| 16:00 | ✓ | 100% | 22874m | 0% | 1.2% | 9.8° |
| 17:00 | ✓ | 5.7% | 24134m | 0% | 0% | -0.004° |
| 18:00 | ✓ | 2.3% | 24134m | 0% | 0% | -10° |
| 19:00 | ✓ | 1.6% | 24134m | 0% | 0% | -21° |
| 20:00 | ✓ | 0.2% | 24135m | 0% | 0% | -32° |
| 21:00 | ✓ | 0% | 24134m | 0% | 0% | -43° |
| 22:00 | ✓ | 0.5% | 24134m | 0% | 0% | -53° |
| 23:00 | ✓ | 0% | 24134m | 0% | 0% | -60° |
| Tue, Feb 17 | ||||||
| 24:00 | ✓ | 1.2% | 24134m | 33% | 0% | -64° |
| 01:00 | ✓ | 0.7% | 24134m | 67% | 0% | -61° |
| 02:00 | ✓ | 0% | 24134m | 100% | 0% | -54° |
| 03:00 | ✓ | 0% | 24135m | 100% | 0% | -45° |
| 04:00 | ✓ | 0.8% | 24134m | 100% | 0% | -34° |
| 05:00 | ✓ | 8.5% | 24135m | 100% | 0% | -23° |
| 06:00 | ✓ | 100% | 1878m | 98% | 0% | -12° |
| 07:00 | ✓ | 100% | 497m | 97% | 0% | -0.68° |
| 08:00 | ✓ | 100% | 7590m | 95% | 0% | 9.9° |
| 09:00 | ✓ | 28% | 24134m | 97% | 0% | 20° |
| 10:00 | ✓ | 76% | 19204m | 98% | 0% | 28° |
| 11:00 | ✓ | 17% | 18533m | 100% | 0% | 34° |
| 12:00 | ✓ | 19% | 11639m | 89% | 0% | 38° |
| 13:00 | ✓ | 19% | 2570m | 79% | 0% | 38° |
| 14:00 | ✓ | 19% | 3324m | 69% | 0% | 35° |
| 15:00 | ✓ | 15% | 17960m | 77% | 0% | 29° |
| 16:00 | ✓ | 19% | 10174m | 86% | 0% | 21° |
| 17:00 | ✓ | 19% | 6811m | 95% | 1.2% | 12° |
| 18:00 | ✓ | 67% | 1494m | 91% | 1.2% | 1.6° |
| 19:00 | ✓ | 67% | 3870m | 87% | 1.2% | -9.2° |
| 20:00 | ✓ | 81% | 4829m | 84% | 1.2% | -20° |
| 21:00 | ✓ | 93% | 7313m | 86% | 1.2% | -31° |
| 22:00 | ✓ | 95% | 1944m | 88% | 1.2% | -41° |
| 23:00 | ✓ | 90% | 678m | 90% | 1.2% | -50° |
| Wed, Feb 18 | ||||||
| 24:00 | ✓ | 80% | 2889m | 81% | 1.2% | -56° |
| 01:00 | ✓ | 25% | 11122m | 72% | 1.2% | -57° |
| 02:00 | ✓ | 40% | 9633m | 64% | 1.2% | -54° |
| 03:00 | ✓ | 38% | 17818m | 67% | 1.2% | -47° |
| 04:00 | ✓ | 100% | 5065m | 71% | 1.2% | -38° |
| 05:00 | ✓ | 74% | 1160m | 74% | 1.2% | -27° |
| 06:00 | ✓ | 100% | 522m | 68% | 1.2% | -16° |
| 07:00 | ✓ | 100% | 5507m | 62% | 1.2% | -5.1° |
| 08:00 | ✓ | 85% | 13377m | 56% | 1.2% | 6.1° |
| 09:00 | ✓ | 87% | 15210m | 65% | 1.2% | 17° |
| 10:00 | ✓ | 19% | 18028m | 73% | 1.2% | 27° |
| 11:00 | ✓ | 49% | 18093m | 82% | 1.2% | 35° |
| 12:00 | ✓ | 84% | 20150m | 85% | 1.2% | 42° |
| 13:00 | ✓ | 100% | 19257m | 88% | 1.2% | 45° |
| 14:00 | ✓ | 82% | 18261m | 91% | 1.2% | 44° |
| 15:00 | ✓ | 62% | 24134m | 93% | 1.2% | 40° |
| 16:00 | ✓ | 99% | 22426m | 95% | 1.2% | 33° |
| 17:00 | ✓ | 100% | 24134m | 97% | 4.5% | 24° |
| 18:00 | ✓ | 100% | 9830m | 72% | 4.5% | 14° |
| 19:00 | ✓ | 1.4% | 21487m | 47% | 4.5% | 3.2° |
| 20:00 | ✓ | 9.3% | 18338m | 22% | 4.5% | -7.6° |
| 21:00 | ✓ | 59% | 17823m | 33% | 4.5% | -18° |
| 22:00 | ✓ | 52% | 18632m | 45% | 4.5% | -29° |
| 23:00 | ✓ | 22% | 17924m | 56% | 4.5% | -38° |
| Thu, Feb 19 | ||||||
| 24:00 | ✓ | 23% | 18040m | 37% | 4.5% | -46° |
| 01:00 | ✓ | 12% | 18149m | 19% | 4.5% | -50° |
| 02:00 | ✓ | 24% | 17753m | 0% | 4.5% | -51° |
| 03:00 | ✓ | 17% | 17764m | 13% | 4.5% | -47° |
| 04:00 | ✓ | 16% | 17825m | 26% | 4.5% | -40° |
| 05:00 | ✓ | 13% | 18052m | 39% | 4.5% | -31° |
| 06:00 | ✓ | 11% | 18143m | 53% | 4.5% | -20° |
| 07:00 | ✓ | 10% | 18086m | 68% | 4.5% | -9.3° |
| 08:00 | ✓ | 11% | 18455m | 82% | 4.5% | 2° |
| 09:00 | ✓ | 26% | 19024m | 86% | 4.5% | 13° |
| 10:00 | ✓ | 82% | 17841m | 90% | 4.5% | 24° |
| 11:00 | ✓ | 100% | 6577m | 95% | 4.5% | 34° |
| 12:00 | ✓ | 84% | 10416m | 76% | 4.5% | 43° |
| 13:00 | ✓ | 68% | 14255m | 58% | 4.5% | 49° |
| 14:00 | ✓ | 51% | 18094m | 39% | 4.5% | 52° |
| 15:00 | ✓ | 54% | 18294m | 39% | 4.5% | 50° |
| 16:00 | ✓ | 57% | 18495m | 39% | 4.5% | 44° |
| 17:00 | ✓ | 59% | 18696m | 39% | 10% | 36° |
| 18:00 | ✓ | 40% | 20509m | 26% | 10% | 26° |
| 19:00 | ✓ | 21% | 22322m | 13% | 10% | 16° |
| 20:00 | ✓ | 1.9% | 24135m | 0% | 10% | 5° |
| 21:00 | ✓ | 30% | 24135m | 0% | 10% | -5.8° |
| 22:00 | ✓ | 58% | 24135m | 0% | 10% | -16° |
| 23:00 | ✓ | 86% | 24135m | 0% | 10% | -26° |
| Fri, Feb 20 | ||||||
| 24:00 | ✓ | 89% | 24135m | 3.9% | 10% | -34° |
| 01:00 | ✓ | 92% | 24135m | 7.8% | 10% | -41° |
| 02:00 | ✓ | 96% | 24135m | 12% | 10% | -44° |
| 03:00 | ✓ | 97% | 22053m | 15% | 10% | -43° |
| 04:00 | ✓ | 99% | 19971m | 19% | 10% | -39° |
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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