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
Excellent Dark Skies (pristine)
Höfn
Today · 20:20–22:00 · 2h window
Medium confidence
62%
🌛Moon Altitude-28.6--22.8°
☁️Total Cloud Coverage7.4-8.6%
Dark Skies
Höfn
Today · 22:00–24:00
🌛Moon Altitude:-37.9--33.8°
Medium
Good Dark Skies
Höfn
Tomorrow · 24:00–02:00
🌛Moon Altitude:-41--40.4°
Medium
Excellent Dark Skies (pristine)
Höfn
Tomorrow · 03:00–05:00
🌛Moon Altitude:-36.4--31.7°
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 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, Feb 15 | ||||||
| 18:00 | ✕ | 0.1% | 24134m | 39% | 4.2% | -20° |
| 19:00 | ✕ | 0.1% | 24134m | 0% | 4.2% | -26° |
| 20:00 | ✓ | 0.1% | 24134m | 0% | 4.2% | -32° |
| 21:00 | ✓ | 1.2% | 24135m | 0% | 4.2% | -37° |
| 22:00 | ✓ | 4.5% | 24134m | 13% | 4.2% | -42° |
| 23:00 | ✓ | 5% | 24135m | 26% | 4.2% | -45° |
| Mon, Feb 16 | ||||||
| 24:00 | ✕ | 5% | 24134m | 39% | 1.2% | -46° |
| 01:00 | ✕ | 5% | 24135m | 26% | 1.2% | -45° |
| 02:00 | ✕ | 4.6% | 24134m | 13% | 1.2% | -42° |
| 03:00 | ✕ | 0.1% | 24134m | 0% | 1.2% | -38° |
| 04:00 | ✕ | 0.1% | 24134m | 0% | 1.2% | -32° |
| 05:00 | ✕ | 0% | 24134m | 0% | 1.2% | -26° |
| 06:00 | ✕ | 0% | 24134m | 0% | 1.2% | -19° |
| 07:00 | ✕ | 0.2% | 24135m | 0% | 1.2% | -13° |
| 08:00 | ✕ | 1.5% | 24134m | 0% | 1.2% | -7° |
| 09:00 | ✕ | 1.3% | 24135m | 0% | 1.2% | -1.8° |
| 10:00 | ✕ | 0.1% | 24134m | 0% | 1.2% | 2.6° |
| 11:00 | ✕ | 0% | 24135m | 0% | 1.2% | 5.7° |
| 12:00 | ✕ | 0% | 24134m | 0% | 1.2% | 7.4° |
| 13:00 | ✕ | 0% | 24134m | 0% | 1.2% | 7.7° |
| 14:00 | ✕ | 0% | 24135m | 0% | 1.2% | 6.4° |
| 15:00 | ✕ | 0% | 24135m | 0% | 1.2% | 3.7° |
| 16:00 | ✕ | 4.9% | 24135m | 0% | 1.2% | -0.19° |
| 17:00 | ✕ | 5.1% | 24134m | 0% | 1.2% | -5.1° |
| 18:00 | ✕ | 8.1% | 24135m | 0% | 1.2% | -11° |
| 19:00 | ✕ | 8.7% | 24134m | 0% | 1.2% | -17° |
| 20:00 | ✓ | 7.4% | 24134m | 0% | 1.2% | -23° |
| 21:00 | ✓ | 8.6% | 24135m | 0% | 1.2% | -29° |
| 22:00 | ✓ | 5% | 24134m | 0% | 1.2% | -34° |
| 23:00 | ✓ | 5% | 24134m | 0% | 1.2% | -38° |
| Tue, Feb 17 | ||||||
| 24:00 | ✓ | 11% | 24135m | 0% | 0% | -40° |
| 01:00 | ✓ | 19% | 24135m | 0% | 0% | -41° |
| 02:00 | ✓ | 22% | 24134m | 0% | 0% | -40° |
| 03:00 | ✓ | 9.4% | 24135m | 0% | 0% | -36° |
| 04:00 | ✓ | 6.6% | 24135m | 0% | 0% | -32° |
| 05:00 | ✓ | 55% | 24134m | 0% | 0% | -26° |
| 06:00 | ✓ | 39% | 24135m | 0% | 0% | -20° |
| 07:00 | ✕ | 26% | 24134m | 0% | 0% | -13° |
| 08:00 | ✕ | 16% | 24135m | 0% | 0% | -6.9° |
| 09:00 | ✕ | 11% | 24134m | 0% | 0% | -0.88° |
| 10:00 | ✕ | 6.2% | 24134m | 0% | 0% | 4.4° |
| 11:00 | ✕ | 3.7% | 24135m | 0% | 0% | 8.6° |
| 12:00 | ✕ | 3.7% | 24134m | 0% | 0% | 12° |
| 13:00 | ✕ | 3.7% | 24134m | 8.1% | 0% | 13° |
| 14:00 | ✕ | 5% | 24135m | 16% | 0% | 13° |
| 15:00 | ✕ | 4.9% | 24134m | 24% | 0% | 11° |
| 16:00 | ✕ | 3.7% | 24134m | 29% | 0% | 8.4° |
| 17:00 | ✕ | 3.7% | 24135m | 33% | 0% | 4.1° |
| 18:00 | ✕ | 5.1% | 24135m | 37% | 0% | -1.1° |
| 19:00 | ✕ | 10% | 24134m | 37% | 0% | -6.8° |
| 20:00 | ✓ | 7.9% | 24134m | 37% | 0% | -13° |
| 21:00 | ✓ | 54% | 24135m | 37% | 0% | -19° |
| 22:00 | ✓ | 100% | 24135m | 47% | 0% | -24° |
| 23:00 | ✓ | 100% | 24135m | 57% | 0% | -29° |
| Wed, Feb 18 | ||||||
| 24:00 | ✓ | 100% | 24135m | 67% | 1.2% | -33° |
| 01:00 | ✓ | 100% | 24134m | 63% | 1.2% | -35° |
| 02:00 | ✓ | 100% | 24135m | 60% | 1.2% | -35° |
| 03:00 | ✓ | 100% | 24135m | 56% | 1.2% | -33° |
| 04:00 | ✓ | 100% | 24135m | 61% | 1.2% | -30° |
| 05:00 | ✓ | 100% | 24135m | 65% | 1.2% | -25° |
| 06:00 | ✓ | 100% | 17255m | 69% | 1.2% | -19° |
| 07:00 | ✕ | 100% | 5354m | 69% | 1.2% | -13° |
| 08:00 | ✕ | 100% | 7897m | 68% | 1.2% | -6.3° |
| 09:00 | ✕ | 100% | 8427m | 67% | 1.2% | 0.14° |
| 10:00 | ✕ | 100% | 4108m | 70% | 1.2% | 6.1° |
| 11:00 | ✕ | 100% | 1014m | 72% | 1.2% | 11° |
| 12:00 | ✕ | 100% | 1117m | 75% | 1.2% | 15° |
| 13:00 | ✕ | 100% | 1353m | 69% | 1.2% | 18° |
| 14:00 | ✕ | 100% | 1552m | 62% | 1.2% | 20° |
| 15:00 | ✕ | 100% | 1462m | 56% | 1.2% | 19° |
| 16:00 | ✕ | 100% | 2727m | 54% | 1.2% | 17° |
| 17:00 | ✕ | 100% | 3206m | 52% | 1.2% | 13° |
| 18:00 | ✕ | 100% | 3052m | 50% | 1.2% | 8.8° |
| 19:00 | ✕ | 100% | 2016m | 42% | 1.2% | 3.4° |
| 20:00 | ✓ | 100% | 1785m | 34% | 1.2% | -2.5° |
| 21:00 | ✓ | 100% | 1237m | 26% | 1.2% | -8.6° |
| 22:00 | ✓ | 100% | 812m | 30% | 1.2% | -14° |
| 23:00 | ✓ | 100% | 1216m | 33% | 1.2% | -20° |
| Thu, Feb 19 | ||||||
| 24:00 | ✓ | 100% | 4703m | 37% | 4.5% | -24° |
| 01:00 | ✓ | 100% | 3306m | 35% | 4.5% | -27° |
| 02:00 | ✓ | 100% | 1908m | 32% | 4.5% | -29° |
| 03:00 | ✓ | 100% | 511m | 30% | 4.5% | -28° |
| 04:00 | ✓ | 100% | 431m | 29% | 4.5% | -26° |
| 05:00 | ✓ | 100% | 351m | 28% | 4.5% | -22° |
| 06:00 | ✓ | 100% | 271m | 27% | 4.5% | -17° |
| 07:00 | ✕ | 100% | 244m | 29% | 4.5% | -12° |
| 08:00 | ✕ | 100% | 218m | 31% | 4.5% | -5.3° |
| 09:00 | ✕ | 100% | 191m | 33% | 4.5% | 1.2° |
| 10:00 | ✕ | 100% | 268m | 35% | 4.5% | 7.6° |
| 11:00 | ✕ | 100% | 345m | 38% | 4.5% | 14° |
| 12:00 | ✕ | 100% | 423m | 41% | 4.5% | 19° |
| 13:00 | ✕ | 95% | 7858m | 31% | 4.5% | 23° |
| 14:00 | ✕ | 89% | 15294m | 21% | 4.5% | 25° |
| 15:00 | ✕ | 84% | 22730m | 11% | 4.5% | 26° |
| 16:00 | ✕ | 89% | 23198m | 16% | 4.5% | 25° |
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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