Rule
Dark Skies
Vail - Dark Skies - Rocky Mountains
Edwards, 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)
Vail
Tomorrow · 02:00–03:00 · 1h window
Medium confidence
60%
🌛Moon Altitude7.3°
☁️Total Cloud Coverage5%
Pristine Dark Skies (pristine)
Vail
Thu, May 28 · 03:00–03:46
🌛Moon Altitude:7.9°
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° |
|---|---|---|---|---|---|---|
| Sat, May 23 | ||||||
| 23:00 | ✓ | 99% | 24135m | 1.6% | 61% | 36° |
| Sun, May 24 | ||||||
| 24:00 | ✕ | 98% | 24134m | 0% | 61% | 26° |
| 01:00 | ✓ | 21% | 24134m | 0% | 61% | 14° |
| 02:00 | ✓ | 4.4% | 24134m | 0% | 61% | 3.1° |
| 03:00 | ✓ | 5% | 24134m | 0% | 61% | -8.1° |
| 04:00 | ✕ | 5% | 24135m | 0% | 61% | -19° |
| 05:00 | ✕ | 5% | 24134m | 0% | 61% | -29° |
| 06:00 | ✕ | 3.3% | 24135m | 0% | 61% | -37° |
| 07:00 | ✕ | 2.1% | 24135m | 0% | 61% | -43° |
| 08:00 | ✕ | 16% | 24135m | 0% | 61% | -46° |
| 09:00 | ✕ | 100% | 24134m | 0% | 61% | -45° |
| 10:00 | ✕ | 92% | 24134m | 0% | 61% | -40° |
| 11:00 | ✕ | 87% | 24134m | 0% | 61% | -32° |
| 12:00 | ✕ | 95% | 24134m | 0% | 61% | -23° |
| 13:00 | ✕ | 84% | 24135m | 18% | 61% | -13° |
| 14:00 | ✕ | 57% | 24134m | 36% | 61% | -1.8° |
| 15:00 | ✕ | 88% | 24135m | 53% | 61% | 9.2° |
| 16:00 | ✕ | 38% | 24134m | 54% | 61% | 20° |
| 17:00 | ✕ | 20% | 24135m | 55% | 61% | 30° |
| 18:00 | ✕ | 14% | 24135m | 56% | 71% | 40° |
| 19:00 | ✕ | 17% | 24135m | 38% | 71% | 47° |
| 20:00 | ✕ | 18% | 24135m | 19% | 71% | 51° |
| 21:00 | ✕ | 68% | 24135m | 0% | 71% | 51° |
| 22:00 | ✓ | 94% | 24134m | 0% | 71% | 46° |
| 23:00 | ✓ | 44% | 24134m | 0% | 71% | 39° |
| Mon, May 25 | ||||||
| 24:00 | ✓ | 5% | 24134m | 0% | 71% | 29° |
| 01:00 | ✓ | 5% | 24135m | 0% | 71% | 18° |
| 02:00 | ✓ | 5% | 24134m | 0% | 71% | 7.3° |
| 03:00 | ✓ | 37% | 24135m | 0% | 71% | -4.1° |
| 04:00 | ✕ | 5% | 24135m | 0% | 71% | -15° |
| 05:00 | ✕ | 5% | 24134m | 0% | 71% | -26° |
| 06:00 | ✕ | 5% | 24135m | 0% | 71% | -36° |
| 07:00 | ✕ | 5% | 24134m | 15% | 71% | -45° |
| 08:00 | ✕ | 83% | 24134m | 29% | 71% | -51° |
| 09:00 | ✕ | 12% | 24134m | 44% | 71% | -52° |
| 10:00 | ✕ | 87% | 24134m | 60% | 71% | -50° |
| 11:00 | ✕ | 54% | 24135m | 77% | 71% | -43° |
| 12:00 | ✕ | 100% | 24134m | 94% | 71% | -34° |
| 13:00 | ✕ | 100% | 24135m | 91% | 71% | -24° |
| 14:00 | ✕ | 88% | 24134m | 89% | 71% | -14° |
| 15:00 | ✕ | 100% | 22829m | 87% | 71% | -2.5° |
| 16:00 | ✕ | 100% | 24134m | 88% | 71% | 8.5° |
| 17:00 | ✕ | 100% | 20797m | 90% | 71% | 19° |
| 18:00 | ✕ | 100% | 12102m | 91% | 80% | 29° |
| 19:00 | ✕ | 100% | 24134m | 77% | 80% | 37° |
| 20:00 | ✕ | 100% | 24135m | 64% | 80% | 43° |
| 21:00 | ✕ | 100% | 24134m | 50% | 80% | 45° |
| 22:00 | ✓ | 100% | 24134m | 42% | 80% | 44° |
| 23:00 | ✓ | 100% | 24134m | 34% | 80% | 39° |
| Tue, May 26 | ||||||
| 24:00 | ✓ | 100% | 24135m | 26% | 80% | 31° |
| 01:00 | ✓ | 98% | 24134m | 34% | 80% | 22° |
| 02:00 | ✓ | 99% | 24135m | 42% | 80% | 11° |
| 03:00 | ✓ | 100% | 24134m | 50% | 80% | -0.04° |
| 04:00 | ✕ | 99% | 24135m | 63% | 80% | -11° |
| 05:00 | ✕ | 100% | 24134m | 77% | 80% | -23° |
| 06:00 | ✕ | 100% | 24134m | 90% | 80% | -34° |
| 07:00 | ✕ | 100% | 24134m | 93% | 80% | -44° |
| 08:00 | ✕ | 100% | 24135m | 97% | 80% | -52° |
| 09:00 | ✕ | 100% | 24135m | 100% | 80% | -57° |
| 10:00 | ✕ | 100% | 20732m | 100% | 80% | -58° |
| 11:00 | ✕ | 100% | 11710m | 100% | 80% | -53° |
| 12:00 | ✕ | 100% | 24134m | 100% | 80% | -45° |
| 13:00 | ✕ | 100% | 24134m | 97% | 80% | -36° |
| 14:00 | ✕ | 100% | 24135m | 95% | 80% | -25° |
| 15:00 | ✕ | 100% | 24135m | 92% | 80% | -14° |
| 16:00 | ✕ | 100% | 24135m | 91% | 80% | -2.9° |
| 17:00 | ✕ | 100% | 24135m | 90% | 80% | 7.8° |
| 18:00 | ✕ | 100% | 24135m | 88% | 87% | 18° |
| 19:00 | ✕ | 100% | 24135m | 80% | 87% | 27° |
| 20:00 | ✕ | 100% | 24135m | 73% | 87% | 34° |
| 21:00 | ✕ | 100% | 24135m | 65% | 87% | 38° |
| 22:00 | ✓ | 81% | 24135m | 49% | 87% | 39° |
| 23:00 | ✓ | 62% | 24135m | 33% | 87% | 37° |
| Wed, May 27 | ||||||
| 24:00 | ✓ | 44% | 24135m | 17% | 87% | 32° |
| 01:00 | ✓ | 36% | 24135m | 15% | 87% | 24° |
| 02:00 | ✓ | 29% | 24135m | 12% | 87% | 14° |
| 03:00 | ✓ | 22% | 24135m | 10% | 87% | 4° |
| 04:00 | ✕ | 46% | 24135m | 23% | 87% | -7° |
| 05:00 | ✕ | 71% | 24135m | 37% | 87% | -18° |
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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