Rule
Dark Skies
Snaefellsnes - Dark Skies - Iceland
Stykkisholmur, West, Iceland
Moonless nights with crystal-clear skies for deep-sky photography
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Atlantic/Reykjavik
Next opportunity
Pristine Dark Skies (pristine)
Snaefellsnes
Wed, Mar 18 · 03:00–04:41 · 2h window
Medium confidence
49%
🌛Moon Altitude-26--21.6°
☁️Total Cloud Coverage5-5.7%
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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 Atlantic/Reykjavik | 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° |
|---|---|---|---|---|---|---|
| Sun, Mar 15 | ||||||
| 04:00 | ✕ | 100% | 24109m | 60% | 14% | -23° |
| 05:00 | ✕ | 100% | 10597m | 62% | 14% | -17° |
| 06:00 | ✕ | 100% | 14836m | 64% | 14% | -11° |
| 07:00 | ✕ | 100% | 11703m | 56% | 14% | -5.9° |
| 08:00 | ✕ | 100% | 10800m | 47% | 14% | -1.4° |
| 09:00 | ✕ | 100% | 16390m | 39% | 14% | 2° |
| 10:00 | ✕ | 100% | 24135m | 53% | 14% | 4.1° |
| 11:00 | ✕ | 100% | 24134m | 68% | 14% | 4.8° |
| 12:00 | ✕ | 100% | 21708m | 82% | 14% | 4.1° |
| 13:00 | ✕ | 100% | 15697m | 68% | 14% | 2° |
| 14:00 | ✕ | 100% | 14239m | 53% | 14% | -1.3° |
| 15:00 | ✕ | 100% | 23004m | 39% | 14% | -5.7° |
| 16:00 | ✕ | 100% | 16834m | 45% | 14% | -11° |
| 17:00 | ✕ | 100% | 24134m | 50% | 14% | -17° |
| 18:00 | ✕ | 98% | 24134m | 56% | 14% | -23° |
| 19:00 | ✕ | 87% | 17554m | 56% | 14% | -28° |
| 20:00 | ✕ | 95% | 17783m | 55% | 14% | -34° |
| 21:00 | ✕ | 89% | 24134m | 55% | 14% | -38° |
| 22:00 | ✓ | 88% | 24135m | 64% | 14% | -41° |
| 23:00 | ✓ | 96% | 13952m | 73% | 14% | -43° |
| Mon, Mar 16 | ||||||
| 24:00 | ✓ | 91% | 13912m | 82% | 7.9% | -42° |
| 01:00 | ✓ | 84% | 14917m | 66% | 7.9% | -39° |
| 02:00 | ✓ | 94% | 19248m | 50% | 7.9% | -35° |
| 03:00 | ✓ | 89% | 18460m | 34% | 7.9% | -30° |
| 04:00 | ✓ | 89% | 22033m | 36% | 7.9% | -24° |
| 05:00 | ✕ | 77% | 24134m | 37% | 7.9% | -18° |
| 06:00 | ✕ | 77% | 24135m | 39% | 7.9% | -12° |
| 07:00 | ✕ | 84% | 24134m | 26% | 7.9% | -5.6° |
| 08:00 | ✕ | 82% | 23342m | 13% | 7.9% | -0.25° |
| 09:00 | ✕ | 75% | 15499m | 0% | 7.9% | 4.2° |
| 10:00 | ✕ | 62% | 15214m | 0% | 7.9% | 7.5° |
| 11:00 | ✕ | 84% | 14875m | 0% | 7.9% | 9.5° |
| 12:00 | ✕ | 95% | 23481m | 0% | 7.9% | 10° |
| 13:00 | ✕ | 96% | 20358m | 0% | 7.9% | 8.9° |
| 14:00 | ✕ | 82% | 12569m | 0% | 7.9% | 6.5° |
| 15:00 | ✕ | 73% | 13843m | 0% | 7.9% | 2.8° |
| 16:00 | ✕ | 96% | 14830m | 17% | 7.9% | -1.9° |
| 17:00 | ✕ | 85% | 15056m | 33% | 7.9% | -7.2° |
| 18:00 | ✕ | 57% | 17621m | 50% | 7.9% | -13° |
| 19:00 | ✕ | 94% | 22410m | 42% | 7.9% | -19° |
| 20:00 | ✕ | 100% | 24135m | 34% | 7.9% | -25° |
| 21:00 | ✕ | 100% | 24134m | 26% | 7.9% | -30° |
| 22:00 | ✓ | 100% | 24135m | 36% | 7.9% | -34° |
| 23:00 | ✓ | 99% | 15374m | 45% | 7.9% | -36° |
| Tue, Mar 17 | ||||||
| 24:00 | ✓ | 98% | 12839m | 54% | 2.9% | -37° |
| 01:00 | ✓ | 90% | 12274m | 52% | 2.9% | -36° |
| 02:00 | ✓ | 80% | 24135m | 50% | 2.9% | -33° |
| 03:00 | ✓ | 82% | 24134m | 47% | 2.9% | -29° |
| 04:00 | ✓ | 93% | 24135m | 47% | 2.9% | -23° |
| 05:00 | ✕ | 100% | 24135m | 46% | 2.9% | -17° |
| 06:00 | ✕ | 100% | 24135m | 46% | 2.9% | -11° |
| 07:00 | ✕ | 100% | 22498m | 44% | 2.9% | -4.9° |
| 08:00 | ✕ | 100% | 24135m | 41% | 2.9% | 1.1° |
| 09:00 | ✕ | 100% | 24134m | 39% | 2.9% | 6.4° |
| 10:00 | ✕ | 100% | 24134m | 45% | 2.9% | 11° |
| 11:00 | ✕ | 100% | 15638m | 51% | 2.9% | 14° |
| 12:00 | ✕ | 93% | 24135m | 56% | 2.9% | 16° |
| 13:00 | ✕ | 97% | 24135m | 54% | 2.9% | 16° |
| 14:00 | ✕ | 100% | 23587m | 52% | 2.9% | 14° |
| 15:00 | ✕ | 96% | 3483m | 50% | 2.9% | 12° |
| 16:00 | ✕ | 96% | 24135m | 42% | 2.9% | 7.6° |
| 17:00 | ✕ | 100% | 23726m | 34% | 2.9% | 2.6° |
| 18:00 | ✕ | 100% | 5937m | 26% | 2.9% | -2.9° |
| 19:00 | ✕ | 69% | 12003m | 24% | 2.9% | -8.8° |
| 20:00 | ✕ | 37% | 18069m | 22% | 2.9% | -15° |
| 21:00 | ✕ | 5.8% | 24135m | 20% | 2.9% | -20° |
| 22:00 | ✓ | 22% | 24135m | 13% | 2.9% | -25° |
| 23:00 | ✓ | 38% | 24135m | 6.7% | 2.9% | -28° |
| Wed, Mar 18 | ||||||
| 24:00 | ✓ | 55% | 24135m | 0% | 0.4% | -30° |
| 01:00 | ✓ | 38% | 24135m | 0% | 0.4% | -31° |
| 02:00 | ✓ | 22% | 24135m | 0% | 0.4% | -29° |
| 03:00 | ✓ | 5% | 24135m | 0% | 0.4% | -26° |
| 04:00 | ✓ | 5.7% | 24135m | 0% | 0.4% | -22° |
| 05:00 | ✕ | 6.5% | 24135m | 0% | 0.4% | -16° |
| 06:00 | ✕ | 7.2% | 24135m | 0% | 0.4% | -10° |
| 07:00 | ✕ | 7% | 24135m | 0% | 0.4% | -3.8° |
| 08:00 | ✕ | 6.9% | 24135m | 0% | 0.4% | 2.5° |
| 09:00 | ✕ | 6.7% | 24135m | 0% | 0.4% | 8.4° |
| 10:00 | ✕ | 6.5% | 24135m | 0% | 0.4% | 14° |
| 11:00 | ✕ | 6.2% | 24135m | 0% | 0.4% | 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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