Rule
Dark Skies
Passo Giau - Dark Skies - Dolomites
Cortina d'Ampezzo, Veneto, Italy
Moonless nights with crystal-clear skies for deep-sky photography
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Rome
Next opportunity
Pristine Dark Skies (pristine)
Passo Giau
Tomorrow · 23:43–02:50 · 3h window
Medium confidence
42%
🌛Moon Altitude-15.7-7.5°
☁️Total Cloud Coverage0-1.1%
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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 Europe/Rome | 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, Jul 8 | ||||||
| 07:00 | ✕ | 100% | 24134m | 0% | 43% | 55° |
| 08:00 | ✕ | 100% | 24135m | 0% | 43% | 55° |
| 09:00 | ✕ | 100% | 24134m | 13% | 43% | 50° |
| 10:00 | ✕ | 100% | 24135m | 26% | 43% | 43° |
| 11:00 | ✕ | 100% | 24134m | 39% | 43% | 34° |
| 12:00 | ✕ | 100% | 24134m | 45% | 43% | 25° |
| 13:00 | ✕ | 100% | 24134m | 50% | 43% | 15° |
| 14:00 | ✕ | 85% | 24134m | 56% | 43% | 5.2° |
| 15:00 | ✕ | 68% | 24134m | 37% | 43% | -4° |
| 16:00 | ✕ | 99% | 24135m | 19% | 43% | -12° |
| 17:00 | ✕ | 13% | 24135m | 0% | 43% | -20° |
| 18:00 | ✕ | 4.7% | 24135m | 0% | 43% | -25° |
| 19:00 | ✕ | 10% | 24135m | 0% | 43% | -28° |
| 20:00 | ✕ | 5.2% | 24134m | 0% | 43% | -28° |
| 21:00 | ✕ | 56% | 24134m | 0% | 43% | -26° |
| 22:00 | ✕ | 83% | 24134m | 0% | 43% | -21° |
| 23:00 | ✓ | 100% | 24135m | 0% | 43% | -15° |
| Thu, Jul 9 | ||||||
| 24:00 | ✓ | 21% | 24134m | 0% | 43% | -6.4° |
| 01:00 | ✓ | 45% | 24134m | 0% | 43% | 2.7° |
| 02:00 | ✓ | 100% | 24135m | 0% | 32% | 12° |
| 03:00 | ✕ | 100% | 24135m | 0% | 32% | 22° |
| 04:00 | ✕ | 100% | 24135m | 0% | 32% | 33° |
| 05:00 | ✕ | 100% | 24134m | 0% | 32% | 42° |
| 06:00 | ✕ | 100% | 24134m | 0% | 32% | 51° |
| 07:00 | ✕ | 100% | 24134m | 0% | 32% | 58° |
| 08:00 | ✕ | 100% | 24135m | 0% | 32% | 61° |
| 09:00 | ✕ | 100% | 24135m | 0% | 32% | 60° |
| 10:00 | ✕ | 78% | 24134m | 0% | 32% | 54° |
| 11:00 | ✕ | 27% | 24135m | 0% | 32% | 46° |
| 12:00 | ✕ | 23% | 24134m | 27% | 32% | 37° |
| 13:00 | ✕ | 8.7% | 24135m | 55% | 32% | 27° |
| 14:00 | ✕ | 5.6% | 24135m | 82% | 32% | 17° |
| 15:00 | ✕ | 9% | 24134m | 68% | 32% | 7.9° |
| 16:00 | ✕ | 39% | 24135m | 53% | 32% | -0.92° |
| 17:00 | ✕ | 51% | 12574m | 39% | 32% | -8.8° |
| 18:00 | ✕ | 30% | 12868m | 39% | 32% | -15° |
| 19:00 | ✕ | 3.5% | 24135m | 39% | 32% | -20° |
| 20:00 | ✕ | 1.6% | 17795m | 39% | 32% | -23° |
| 21:00 | ✕ | 1.6% | 23231m | 26% | 32% | -23° |
| 22:00 | ✕ | 0.2% | 24135m | 13% | 32% | -20° |
| 23:00 | ✓ | 0% | 24135m | 0% | 32% | -16° |
| Fri, Jul 10 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 32% | -9.2° |
| 01:00 | ✓ | 0.4% | 24135m | 0% | 32% | -1.3° |
| 02:00 | ✓ | 1.1% | 24135m | 0% | 22% | 7.5° |
| 03:00 | ✕ | 0% | 24135m | 7.4% | 22% | 17° |
| 04:00 | ✕ | 3.6% | 24135m | 15% | 22% | 27° |
| 05:00 | ✕ | 0% | 24134m | 22% | 22% | 37° |
| 06:00 | ✕ | 0% | 24135m | 45% | 22% | 47° |
| 07:00 | ✕ | 0% | 24134m | 67% | 22% | 56° |
| 08:00 | ✕ | 0% | 24135m | 90% | 22% | 63° |
| 09:00 | ✕ | 0.4% | 24134m | 93% | 22% | 66° |
| 10:00 | ✕ | 1.1% | 24134m | 97% | 22% | 64° |
| 11:00 | ✕ | 11% | 24135m | 100% | 22% | 58° |
| 12:00 | ✕ | 11% | 24134m | 100% | 22% | 49° |
| 13:00 | ✕ | 7.6% | 15281m | 100% | 22% | 40° |
| 14:00 | ✕ | 16% | 20207m | 100% | 22% | 30° |
| 15:00 | ✕ | 18% | 24135m | 100% | 22% | 20° |
| 16:00 | ✕ | 25% | 20309m | 100% | 22% | 11° |
| 17:00 | ✕ | 31% | 24134m | 100% | 22% | 2.3° |
| 18:00 | ✕ | 36% | 20083m | 100% | 22% | -5.3° |
| 19:00 | ✕ | 99% | 20004m | 100% | 22% | -12° |
| 20:00 | ✕ | 100% | 20015m | 100% | 22% | -16° |
| 21:00 | ✕ | 100% | 21388m | 94% | 22% | -18° |
| 22:00 | ✕ | 100% | 22761m | 88% | 22% | -18° |
| 23:00 | ✓ | 100% | 24135m | 82% | 22% | -16° |
| Sat, Jul 11 | ||||||
| 24:00 | ✓ | 100% | 24135m | 82% | 22% | -12° |
| 01:00 | ✓ | 100% | 24135m | 83% | 22% | -5.6° |
| 02:00 | ✓ | 100% | 24135m | 84% | 13% | 2° |
| 03:00 | ✕ | 100% | 24135m | 88% | 13% | 11° |
| 04:00 | ✕ | 100% | 24135m | 92% | 13% | 20° |
| 05:00 | ✕ | 100% | 24135m | 97% | 13% | 30° |
| 06:00 | ✕ | 94% | 21678m | 98% | 13% | 40° |
| 07:00 | ✕ | 87% | 19222m | 99% | 13% | 49° |
| 08:00 | ✕ | 81% | 16765m | 100% | 13% | 59° |
| 09:00 | ✕ | 82% | 16555m | 100% | 13% | 66° |
| 10:00 | ✕ | 83% | 16344m | 100% | 13% | 70° |
| 11:00 | ✕ | 84% | 16134m | 100% | 13% | 67° |
| 12:00 | ✕ | 90% | 18497m | 100% | 13% | 61° |
| 13:00 | ✕ | 95% | 20860m | 100% | 13% | 52° |
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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