Rule
Dark Skies
Breckenridge - Dark Skies - Rocky Mountains
Silverthorne, 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)
Breckenridge
Today · 21:00–23:00 · 2h window
Medium confidence
52%
🌛Moon Altitude-76.5--68.5°
☁️Total Cloud Coverage4.8-18.5%
Pristine Dark Skies (pristine)
Breckenridge
Tomorrow · 05:00–07:00
🌛Moon Altitude:4.8-12.6°
Medium
Pristine Dark Skies (pristine)
Breckenridge
Tomorrow · 09:00–14:00
🌛Moon Altitude:4.7-24°
Medium
Pristine Dark Skies (pristine)
Breckenridge
Tomorrow · 17:00–19:00
🌛Moon Altitude:-46.9--35.8°
Medium
Pristine Dark Skies (pristine)
Breckenridge
Tomorrow · 21:00–24:00
🌛Moon Altitude:-74.7--65.4°
Medium
Excellent Dark Skies (pristine)
Breckenridge
Sun, Mar 15 · 21:00–22:00
🌛Moon Altitude:-55.9°
Medium
Pristine Dark Skies (pristine)
Breckenridge
Wed, Mar 18 · 09:00–06:00
🌛Moon Altitude:-47.6-49.6°
Medium
+8 more windows in the next 10 days
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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° |
|---|---|---|---|---|---|---|
| Wed, Mar 11 | ||||||
| 22:00 | ✓ | 8.4% | 24134m | 0% | 39% | -60° |
| 23:00 | ✓ | 3.9% | 24135m | 0% | 39% | -49° |
| Thu, Mar 12 | ||||||
| 24:00 | ✓ | 3.5% | 24135m | 0% | 39% | -38° |
| 01:00 | ✓ | 98% | 24134m | 0% | 39% | -27° |
| 02:00 | ✓ | 3.9% | 24134m | 0% | 39% | -16° |
| 03:00 | ✓ | 5% | 24134m | 0% | 39% | -6.5° |
| 04:00 | ✓ | 5% | 24134m | 0% | 39% | 2.6° |
| 05:00 | ✓ | 3.9% | 24134m | 0% | 39% | 10° |
| 06:00 | ✓ | 100% | 24135m | 0% | 39% | 17° |
| 07:00 | ✓ | 4.6% | 24135m | 0% | 39% | 21° |
| 08:00 | ✓ | 4.8% | 24134m | 0% | 39% | 22° |
| 09:00 | ✓ | 21% | 24135m | 0% | 39% | 21° |
| 10:00 | ✓ | 28% | 24134m | 0% | 39% | 18° |
| 11:00 | ✓ | 4.9% | 24135m | 0% | 39% | 12° |
| 12:00 | ✓ | 5% | 24134m | 0% | 39% | 4.4° |
| 13:00 | ✓ | 91% | 24134m | 0% | 39% | -4.4° |
| 14:00 | ✓ | 90% | 24135m | 0% | 39% | -14° |
| 15:00 | ✓ | 99% | 24135m | 0% | 39% | -24° |
| 16:00 | ✓ | 99% | 23667m | 0% | 39% | -35° |
| 17:00 | ✓ | 99% | 23748m | 0% | 39% | -46° |
| 18:00 | ✓ | 100% | 22090m | 0% | 30% | -57° |
| 19:00 | ✓ | 96% | 23983m | 0% | 30% | -68° |
| 20:00 | ✓ | 75% | 24135m | 0% | 30% | -76° |
| 21:00 | ✓ | 19% | 24134m | 0% | 30% | -77° |
| 22:00 | ✓ | 4.8% | 24135m | 0% | 30% | -68° |
| 23:00 | ✓ | 77% | 24135m | 0% | 30% | -58° |
| Fri, Mar 13 | ||||||
| 24:00 | ✓ | 84% | 24134m | 0% | 30% | -47° |
| 01:00 | ✓ | 66% | 24135m | 0% | 30% | -36° |
| 02:00 | ✓ | 73% | 24134m | 0% | 30% | -25° |
| 03:00 | ✓ | 66% | 24134m | 0% | 30% | -14° |
| 04:00 | ✓ | 26% | 24135m | 0% | 30% | -4.2° |
| 05:00 | ✓ | 3.9% | 24135m | 0% | 30% | 4.8° |
| 06:00 | ✓ | 4.6% | 24135m | 0% | 30% | 13° |
| 07:00 | ✓ | 36% | 24134m | 0% | 30% | 19° |
| 08:00 | ✓ | 60% | 24135m | 0% | 30% | 23° |
| 09:00 | ✓ | 0% | 24134m | 0% | 30% | 24° |
| 10:00 | ✓ | 0% | 24134m | 0% | 30% | 23° |
| 11:00 | ✓ | 0% | 24135m | 0% | 30% | 19° |
| 12:00 | ✓ | 0.6% | 24135m | 0% | 30% | 13° |
| 13:00 | ✓ | 17% | 24135m | 0% | 30% | 4.7° |
| 14:00 | ✓ | 73% | 24135m | 0% | 30% | -4.3° |
| 15:00 | ✓ | 81% | 24134m | 0% | 30% | -14° |
| 16:00 | ✓ | 52% | 24134m | 0% | 30% | -25° |
| 17:00 | ✓ | 0.1% | 24134m | 0% | 30% | -36° |
| 18:00 | ✓ | 3.9% | 24135m | 0% | 22% | -47° |
| 19:00 | ✓ | 29% | 24135m | 0% | 22% | -58° |
| 20:00 | ✓ | 28% | 24135m | 0% | 22% | -68° |
| 21:00 | ✓ | 0.5% | 24135m | 0% | 22% | -75° |
| 22:00 | ✓ | 6.4% | 24134m | 0% | 22% | -73° |
| 23:00 | ✓ | 3.7% | 24134m | 0% | 22% | -65° |
| Sat, Mar 14 | ||||||
| 24:00 | ✓ | 31% | 24135m | 0% | 22% | -55° |
| 01:00 | ✓ | 23% | 24134m | 0% | 22% | -44° |
| 02:00 | ✓ | 42% | 24135m | 0% | 22% | -33° |
| 03:00 | ✓ | 36% | 24135m | 0% | 22% | -22° |
| 04:00 | ✓ | 53% | 24134m | 0% | 22% | -11° |
| 05:00 | ✓ | 59% | 24135m | 0% | 22% | -0.83° |
| 06:00 | ✓ | 71% | 24134m | 0% | 22% | 8.3° |
| 07:00 | ✓ | 74% | 24135m | 0% | 22% | 16° |
| 08:00 | ✓ | 60% | 24135m | 0% | 22% | 22° |
| 09:00 | ✓ | 46% | 24135m | 0% | 22% | 26° |
| 10:00 | ✓ | 42% | 24134m | 13% | 22% | 27° |
| 11:00 | ✓ | 60% | 24135m | 26% | 22% | 25° |
| 12:00 | ✓ | 90% | 24134m | 39% | 22% | 21° |
| 13:00 | ✓ | 99% | 24134m | 56% | 22% | 14° |
| 14:00 | ✓ | 99% | 24135m | 72% | 22% | 5.8° |
| 15:00 | ✓ | 99% | 24135m | 89% | 22% | -3.7° |
| 16:00 | ✓ | 93% | 24134m | 92% | 22% | -14° |
| 17:00 | ✓ | 99% | 24135m | 95% | 22% | -25° |
| 18:00 | ✓ | 100% | 23812m | 98% | 14% | -36° |
| 19:00 | ✓ | 100% | 16671m | 98% | 14% | -47° |
| 20:00 | ✓ | 100% | 808m | 99% | 14% | -57° |
| 21:00 | ✓ | 98% | 6857m | 99% | 14% | -66° |
| 22:00 | ✓ | 93% | 11175m | 100% | 14% | -72° |
| 23:00 | ✓ | 79% | 2774m | 100% | 14% | -69° |
| Sun, Mar 15 | ||||||
| 24:00 | ✓ | 100% | 1173m | 100% | 14% | -61° |
| 01:00 | ✓ | 100% | 843m | 97% | 14% | -51° |
| 02:00 | ✓ | 100% | 512m | 94% | 14% | -40° |
| 03:00 | ✓ | 100% | 182m | 91% | 14% | -28° |
| 04:00 | ✓ | 100% | 824m | 93% | 14% | -17° |
| 05:00 | ✓ | 100% | 1466m | 94% | 14% | -6.5° |
| 06:00 | ✓ | 100% | 2108m | 96% | 14% | 3.8° |
| 07:00 | ✓ | 100% | 3095m | 91% | 14% | 13° |
| 08:00 | ✓ | 100% | 4083m | 87% | 14% | 21° |
| 09:00 | ✓ | 100% | 5070m | 82% | 14% | 27° |
| 10:00 | ✓ | 99% | 10602m | 85% | 14% | 31° |
| 11:00 | ✓ | 99% | 16134m | 88% | 14% | 31° |
| 12:00 | ✓ | 98% | 21666m | 92% | 14% | 29° |
| 13:00 | ✓ | 67% | 22489m | 67% | 14% | 24° |
| 14:00 | ✓ | 36% | 23312m | 42% | 14% | 16° |
| 15:00 | ✓ | 4.9% | 24135m | 17% | 14% | 7.3° |
| 16:00 | ✓ | 21% | 24135m | 24% | 14% | -2.6° |
| 17:00 | ✓ | 37% | 24135m | 32% | 14% | -13° |
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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