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
Excellent Dark Skies (pristine)
Vail
Today · 14:00–15:00 · 1h window
Medium confidence
65%
🌛Moon Altitude52.5°
☁️Total Cloud Coverage9.8%
Good Dark Skies at Sunrise
Vail
Tomorrow · 07:00–08:00
🌛Moon Altitude:-21.8°
Medium
Pristine Dark Skies (pristine)
Vail
Tomorrow · 08:00–11:00
🌛Moon Altitude:-15.4-1.9°
Medium
Excellent Dark Skies (pristine) at Sunrise
Vail
Tue, Feb 24 · 06:00–08:00
🌛Moon Altitude:-23.8--22.5°
Medium
Pristine Dark Skies (pristine)
Vail
Tue, Feb 24 · 08:00–09:00
🌛Moon Altitude:-18.6°
Medium
Pristine Dark Skies (pristine)
Vail
Fri, Feb 27 · 08:00–09:00
🌛Moon Altitude:-22.7°
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, Feb 21 | ||||||
| 12:00 | ✓ | 3.6% | 24135m | 0% | 18% | 37° |
| 13:00 | ✓ | 4.4% | 24134m | 0% | 18% | 47° |
| 14:00 | ✓ | 5% | 24135m | 0% | 18% | 57° |
| 15:00 | ✓ | 5% | 24135m | 0% | 18% | 64° |
| 16:00 | ✓ | 2.1% | 24135m | 0% | 18% | 65° |
| 17:00 | ✓ | 0.9% | 24135m | 0% | 28% | 61° |
| 18:00 | ✓ | 5% | 24135m | 0% | 28% | 52° |
| 19:00 | ✓ | 5% | 24134m | 0% | 28% | 42° |
| 20:00 | ✓ | 5.7% | 24135m | 0% | 28% | 32° |
| 21:00 | ✓ | 5% | 24134m | 0% | 28% | 21° |
| 22:00 | ✓ | 6% | 24135m | 0% | 28% | 9.7° |
| 23:00 | ✓ | 5% | 24134m | 0% | 28% | -0.74° |
| Sun, Feb 22 | ||||||
| 24:00 | ✓ | 5% | 24134m | 0% | 28% | -10° |
| 01:00 | ✓ | 5% | 24134m | 0% | 28% | -19° |
| 02:00 | ✓ | 9.1% | 24135m | 0% | 28% | -26° |
| 03:00 | ✓ | 5% | 24135m | 0% | 28% | -31° |
| 04:00 | ✓ | 5% | 24135m | 0% | 28% | -32° |
| 05:00 | ✓ | 5% | 24134m | 0% | 28% | -31° |
| 06:00 | ✓ | 42% | 24135m | 0% | 28% | -27° |
| 07:00 | ✓ | 94% | 24135m | 0% | 28% | -20° |
| 08:00 | ✓ | 62% | 24135m | 0% | 28% | -12° |
| 09:00 | ✓ | 7.3% | 24135m | 0% | 28% | -2.1° |
| 10:00 | ✓ | 31% | 24135m | 0% | 28% | 8.3° |
| 11:00 | ✓ | 100% | 24135m | 0% | 28% | 19° |
| 12:00 | ✓ | 100% | 24134m | 0% | 28% | 30° |
| 13:00 | ✓ | 56% | 24134m | 0% | 28% | 42° |
| 14:00 | ✓ | 9.8% | 24135m | 0% | 28% | 53° |
| 15:00 | ✓ | 50% | 24135m | 0% | 28% | 62° |
| 16:00 | ✓ | 37% | 24135m | 0% | 28% | 70° |
| 17:00 | ✓ | 25% | 24135m | 0% | 38% | 70° |
| 18:00 | ✓ | 72% | 24135m | 0% | 38% | 64° |
| 19:00 | ✓ | 100% | 24135m | 0% | 38% | 55° |
| 20:00 | ✓ | 100% | 24135m | 0% | 38% | 44° |
| 21:00 | ✓ | 100% | 24134m | 0% | 38% | 33° |
| 22:00 | ✓ | 100% | 24135m | 0% | 38% | 22° |
| 23:00 | ✓ | 100% | 24134m | 0% | 38% | 12° |
| Mon, Feb 23 | ||||||
| 24:00 | ✓ | 100% | 24135m | 0% | 38% | 1.8° |
| 01:00 | ✓ | 97% | 24134m | 0% | 38% | -7.5° |
| 02:00 | ✓ | 100% | 24135m | 0% | 38% | -16° |
| 03:00 | ✓ | 100% | 24134m | 0% | 38% | -22° |
| 04:00 | ✓ | 49% | 24134m | 0% | 38% | -26° |
| 05:00 | ✓ | 47% | 24135m | 0% | 38% | -27° |
| 06:00 | ✓ | 32% | 24134m | 0% | 38% | -26° |
| 07:00 | ✓ | 18% | 24135m | 0% | 38% | -22° |
| 08:00 | ✓ | 5.9% | 24135m | 0% | 38% | -15° |
| 09:00 | ✓ | 5% | 24134m | 0% | 38% | -7.4° |
| 10:00 | ✓ | 8.4% | 24134m | 0% | 38% | 1.9° |
| 11:00 | ✓ | 8.5% | 24134m | 0% | 38% | 12° |
| 12:00 | ✓ | 6% | 24135m | 0% | 38% | 23° |
| 13:00 | ✓ | 9.7% | 24135m | 0% | 38% | 34° |
| 14:00 | ✓ | 9.2% | 24135m | 0% | 38% | 45° |
| 15:00 | ✓ | 5% | 24135m | 0% | 38% | 56° |
| 16:00 | ✓ | 100% | 24134m | 0% | 38% | 66° |
| 17:00 | ✓ | 100% | 24135m | 0% | 50% | 74° |
| 18:00 | ✓ | 100% | 24134m | 0% | 50% | 74° |
| 19:00 | ✓ | 100% | 24135m | 0% | 50% | 67° |
| 20:00 | ✓ | 96% | 24135m | 0% | 50% | 57° |
| 21:00 | ✓ | 100% | 24135m | 0% | 50% | 46° |
| 22:00 | ✓ | 100% | 24135m | 0% | 50% | 35° |
| 23:00 | ✓ | 94% | 24135m | 0% | 50% | 24° |
| Tue, Feb 24 | ||||||
| 24:00 | ✓ | 100% | 24134m | 0% | 50% | 14° |
| 01:00 | ✓ | 100% | 24134m | 0% | 50% | 4.1° |
| 02:00 | ✓ | 99% | 24135m | 0% | 50% | -4.9° |
| 03:00 | ✓ | 100% | 24135m | 0% | 50% | -13° |
| 04:00 | ✓ | 76% | 24134m | 0% | 50% | -19° |
| 05:00 | ✓ | 43% | 24135m | 0% | 50% | -22° |
| 06:00 | ✓ | 8.9% | 24134m | 0% | 50% | -24° |
| 07:00 | ✓ | 6.1% | 24135m | 0% | 50% | -22° |
| 08:00 | ✓ | 5% | 24135m | 0% | 50% | -19° |
| 09:00 | ✓ | 24% | 24134m | 0% | 50% | -13° |
| 10:00 | ✓ | 31% | 24135m | 0% | 50% | -4.8° |
| 11:00 | ✓ | 95% | 24135m | 0% | 50% | 4.1° |
| 12:00 | ✓ | 78% | 24134m | 0% | 50% | 14° |
| 13:00 | ✓ | 83% | 24134m | 0% | 50% | 24° |
| 14:00 | ✓ | 6.7% | 24134m | 0% | 50% | 35° |
| 15:00 | ✓ | 89% | 24134m | 0% | 50% | 46° |
| 16:00 | ✓ | 92% | 24134m | 0% | 50% | 57° |
| 17:00 | ✓ | 97% | 24135m | 0% | 61% | 68° |
| 18:00 | ✓ | 96% | 18196m | 17% | 61% | 76° |
| 19:00 | ✓ | 94% | 12257m | 33% | 61% | 77° |
| 20:00 | ✓ | 93% | 6317m | 50% | 61% | 69° |
| 21:00 | ✓ | 95% | 4274m | 51% | 61% | 59° |
| 22:00 | ✓ | 98% | 2231m | 52% | 61% | 48° |
| 23:00 | ✓ | 100% | 187m | 52% | 61% | 37° |
| Wed, Feb 25 | ||||||
| 24:00 | ✓ | 100% | 406m | 61% | 61% | 26° |
| 01:00 | ✓ | 100% | 626m | 70% | 61% | 15° |
| 02:00 | ✓ | 100% | 845m | 78% | 61% | 5.7° |
| 03:00 | ✓ | 100% | 824m | 82% | 61% | -3.1° |
| 04:00 | ✓ | 100% | 802m | 86% | 61% | -11° |
| 05:00 | ✓ | 100% | 781m | 90% | 61% | -17° |
| 06:00 | ✓ | 97% | 1372m | 91% | 61% | -21° |
| 07:00 | ✓ | 94% | 1963m | 92% | 61% | -22° |
| 08:00 | ✓ | 90% | 2555m | 94% | 61% | -21° |
| 09:00 | ✓ | 92% | 5285m | 95% | 61% | -17° |
| 10:00 | ✓ | 93% | 8016m | 97% | 61% | -11° |
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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