Rule
Dark Skies
Höfn - Dark Skies - Iceland
Hofn, East, 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)
Höfn
Wed, Mar 18 · 03:00–04:18 · 1h window
Medium confidence
50%
🌛Moon Altitude-24.6--19.5°
☁️Total Cloud Coverage1.1%
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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 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% | 80m | 100% | 14% | -20° |
| 05:00 | ✕ | 100% | 77m | 100% | 14% | -14° |
| 06:00 | ✕ | 100% | 78m | 100% | 14% | -8° |
| 07:00 | ✕ | 100% | 72m | 100% | 14% | -3° |
| 08:00 | ✕ | 100% | 75m | 100% | 14% | 1.1° |
| 09:00 | ✕ | 100% | 326m | 100% | 14% | 3.9° |
| 10:00 | ✕ | 100% | 576m | 100% | 14% | 5.4° |
| 11:00 | ✕ | 100% | 595m | 100% | 14% | 5.4° |
| 12:00 | ✕ | 100% | 577m | 100% | 14% | 3.9° |
| 13:00 | ✕ | 98% | 1271m | 90% | 14% | 0.99° |
| 14:00 | ✕ | 91% | 1891m | 81% | 14% | -3.1° |
| 15:00 | ✕ | 96% | 7836m | 71% | 14% | -8.1° |
| 16:00 | ✕ | 100% | 23929m | 75% | 14% | -14° |
| 17:00 | ✕ | 100% | 24134m | 78% | 14% | -20° |
| 18:00 | ✕ | 100% | 24134m | 82% | 14% | -26° |
| 19:00 | ✕ | 100% | 24134m | 72% | 14% | -32° |
| 20:00 | ✕ | 100% | 24135m | 63% | 14% | -37° |
| 21:00 | ✓ | 100% | 24134m | 54% | 14% | -41° |
| 22:00 | ✓ | 100% | 24135m | 57% | 14% | -43° |
| 23:00 | ✓ | 100% | 18891m | 60% | 14% | -43° |
| Mon, Mar 16 | ||||||
| 24:00 | ✓ | 98% | 24135m | 64% | 7.9% | -42° |
| 01:00 | ✓ | 84% | 24135m | 49% | 7.9% | -38° |
| 02:00 | ✓ | 4.7% | 24134m | 33% | 7.9% | -33° |
| 03:00 | ✓ | 3.5% | 24135m | 18% | 7.9% | -27° |
| 04:00 | ✓ | 0.5% | 24135m | 25% | 7.9% | -21° |
| 05:00 | ✕ | 0.5% | 24134m | 32% | 7.9% | -14° |
| 06:00 | ✕ | 0.6% | 24135m | 39% | 7.9% | -8.2° |
| 07:00 | ✕ | 3.2% | 24134m | 26% | 7.9% | -2.4° |
| 08:00 | ✕ | 0.3% | 24134m | 13% | 7.9% | 2.7° |
| 09:00 | ✕ | 0.1% | 24135m | 0% | 7.9% | 6.7° |
| 10:00 | ✕ | 0% | 24135m | 0% | 7.9% | 9.4° |
| 11:00 | ✕ | 1.5% | 24134m | 0% | 7.9% | 11° |
| 12:00 | ✕ | 6.5% | 24134m | 0% | 7.9% | 10° |
| 13:00 | ✕ | 72% | 24134m | 13% | 7.9% | 8.5° |
| 14:00 | ✕ | 68% | 24135m | 25% | 7.9% | 5.2° |
| 15:00 | ✕ | 57% | 24134m | 38% | 7.9% | 0.88° |
| 16:00 | ✕ | 100% | 24135m | 51% | 7.9% | -4.4° |
| 17:00 | ✕ | 100% | 24135m | 64% | 7.9% | -10° |
| 18:00 | ✕ | 99% | 24134m | 78% | 7.9% | -16° |
| 19:00 | ✕ | 100% | 24134m | 83% | 7.9% | -22° |
| 20:00 | ✕ | 100% | 24135m | 88% | 7.9% | -28° |
| 21:00 | ✓ | 100% | 23198m | 93% | 7.9% | -33° |
| 22:00 | ✓ | 100% | 23237m | 94% | 7.9% | -36° |
| 23:00 | ✓ | 100% | 23296m | 95% | 7.9% | -38° |
| Tue, Mar 17 | ||||||
| 24:00 | ✓ | 100% | 23940m | 97% | 2.9% | -38° |
| 01:00 | ✓ | 100% | 24134m | 81% | 2.9% | -36° |
| 02:00 | ✓ | 100% | 24135m | 65% | 2.9% | -32° |
| 03:00 | ✓ | 100% | 24134m | 49% | 2.9% | -27° |
| 04:00 | ✓ | 100% | 24135m | 53% | 2.9% | -21° |
| 05:00 | ✕ | 100% | 23679m | 56% | 2.9% | -14° |
| 06:00 | ✕ | 100% | 24135m | 60% | 2.9% | -7.9° |
| 07:00 | ✕ | 100% | 22363m | 47% | 2.9% | -1.6° |
| 08:00 | ✕ | 100% | 3006m | 35% | 2.9% | 4.3° |
| 09:00 | ✕ | 100% | 303m | 22% | 2.9% | 9.3° |
| 10:00 | ✕ | 100% | 214m | 25% | 2.9% | 13° |
| 11:00 | ✕ | 100% | 215m | 28% | 2.9% | 16° |
| 12:00 | ✕ | 100% | 3539m | 31% | 2.9% | 17° |
| 13:00 | ✕ | 100% | 7023m | 29% | 2.9% | 16° |
| 14:00 | ✕ | 100% | 24134m | 28% | 2.9% | 14° |
| 15:00 | ✕ | 100% | 24134m | 26% | 2.9% | 10° |
| 16:00 | ✕ | 100% | 24135m | 34% | 2.9% | 5.4° |
| 17:00 | ✕ | 100% | 24135m | 41% | 2.9% | -0.06° |
| 18:00 | ✕ | 100% | 24134m | 49% | 2.9% | -6° |
| 19:00 | ✕ | 100% | 23595m | 38% | 2.9% | -12° |
| 20:00 | ✕ | 100% | 23056m | 28% | 2.9% | -18° |
| 21:00 | ✓ | 100% | 22517m | 17% | 2.9% | -23° |
| 22:00 | ✓ | 71% | 23056m | 24% | 2.9% | -27° |
| 23:00 | ✓ | 41% | 23596m | 32% | 2.9% | -30° |
| Wed, Mar 18 | ||||||
| 24:00 | ✓ | 12% | 24135m | 39% | 0.4% | -32° |
| 01:00 | ✓ | 8.1% | 24135m | 26% | 0.4% | -31° |
| 02:00 | ✓ | 4.6% | 24135m | 13% | 0.4% | -29° |
| 03:00 | ✓ | 1.1% | 24135m | 0% | 0.4% | -25° |
| 04:00 | ✓ | 1.1% | 24135m | 0% | 0.4% | -19° |
| 05:00 | ✕ | 1.1% | 24135m | 0% | 0.4% | -14° |
| 06:00 | ✕ | 1.1% | 24135m | 0% | 0.4% | -7.1° |
| 07:00 | ✕ | 14% | 24135m | 0% | 0.4% | -0.56° |
| 08:00 | ✕ | 27% | 24135m | 0% | 0.4% | 5.8° |
| 09:00 | ✕ | 39% | 24135m | 0% | 0.4% | 12° |
| 10:00 | ✕ | 27% | 24135m | 0% | 0.4% | 17° |
| 11:00 | ✕ | 14% | 24135m | 0% | 0.4% | 20° |
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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