Rule
Dark Skies
Reykjavik - Dark Skies - Iceland
Reykjavik, Capital Region, 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)
Reykjavik
Tomorrow · 03:00–04:55 · 2h window
Medium confidence
54%
🌛Moon Altitude-30.1--23.9°
☁️Total Cloud Coverage5-8.6%
Pristine Dark Skies (pristine)
Reykjavik
Tue, Mar 17 · 22:24–04:45
🌛Moon Altitude:-31.5--21.9°
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, Mar 15 | ||||||
| 04:00 | ✕ | 100% | 7697m | 33% | 14% | -23° |
| 05:00 | ✕ | 100% | 22637m | 36% | 14% | -17° |
| 06:00 | ✕ | 100% | 23808m | 39% | 14% | -11° |
| 07:00 | ✕ | 100% | 24134m | 26% | 14% | -5.1° |
| 08:00 | ✕ | 100% | 24135m | 13% | 14% | -0.47° |
| 09:00 | ✕ | 100% | 24135m | 0% | 14% | 3° |
| 10:00 | ✕ | 100% | 24135m | 0% | 14% | 5.1° |
| 11:00 | ✕ | 100% | 24134m | 0% | 14% | 5.8° |
| 12:00 | ✕ | 100% | 24134m | 0% | 14% | 4.9° |
| 13:00 | ✕ | 97% | 24135m | 0% | 14% | 2.7° |
| 14:00 | ✕ | 100% | 24135m | 0% | 14% | -0.89° |
| 15:00 | ✕ | 100% | 24135m | 0% | 14% | -5.5° |
| 16:00 | ✕ | 66% | 24134m | 0% | 14% | -11° |
| 17:00 | ✕ | 36% | 24134m | 0% | 14% | -17° |
| 18:00 | ✕ | 99% | 24134m | 0% | 14% | -23° |
| 19:00 | ✕ | 100% | 24134m | 0% | 14% | -29° |
| 20:00 | ✕ | 100% | 24135m | 0% | 14% | -35° |
| 21:00 | ✕ | 100% | 24134m | 0% | 14% | -39° |
| 22:00 | ✓ | 100% | 24135m | 0% | 14% | -42° |
| 23:00 | ✓ | 99% | 24135m | 0% | 14% | -44° |
| Mon, Mar 16 | ||||||
| 24:00 | ✓ | 79% | 24135m | 0% | 7.9% | -43° |
| 01:00 | ✓ | 84% | 24135m | 0% | 7.9% | -40° |
| 02:00 | ✓ | 20% | 24134m | 0% | 7.9% | -36° |
| 03:00 | ✓ | 5% | 24135m | 0% | 7.9% | -30° |
| 04:00 | ✓ | 8.6% | 24135m | 0% | 7.9% | -24° |
| 05:00 | ✕ | 5% | 24134m | 0% | 7.9% | -17° |
| 06:00 | ✕ | 5% | 24135m | 0% | 7.9% | -11° |
| 07:00 | ✕ | 5% | 24134m | 0% | 7.9% | -4.8° |
| 08:00 | ✕ | 5% | 24134m | 0% | 7.9% | 0.62° |
| 09:00 | ✕ | 5% | 24135m | 0% | 7.9% | 5.2° |
| 10:00 | ✕ | 5% | 24135m | 0% | 7.9% | 8.5° |
| 11:00 | ✕ | 5% | 24134m | 0% | 7.9% | 10° |
| 12:00 | ✕ | 3.2% | 24134m | 0% | 7.9% | 11° |
| 13:00 | ✕ | 0% | 24134m | 17% | 7.9% | 9.7° |
| 14:00 | ✕ | 5% | 24135m | 33% | 7.9% | 7.1° |
| 15:00 | ✕ | 1.9% | 24134m | 50% | 7.9% | 3.2° |
| 16:00 | ✕ | 100% | 24135m | 67% | 7.9% | -1.7° |
| 17:00 | ✕ | 100% | 24135m | 83% | 7.9% | -7.3° |
| 18:00 | ✕ | 100% | 24134m | 100% | 7.9% | -13° |
| 19:00 | ✕ | 100% | 24134m | 75% | 7.9% | -19° |
| 20:00 | ✕ | 100% | 24135m | 51% | 7.9% | -25° |
| 21:00 | ✕ | 100% | 24134m | 26% | 7.9% | -30° |
| 22:00 | ✓ | 100% | 24135m | 30% | 7.9% | -35° |
| 23:00 | ✓ | 100% | 24134m | 34% | 7.9% | -37° |
| Tue, Mar 17 | ||||||
| 24:00 | ✓ | 100% | 24135m | 38% | 2.9% | -38° |
| 01:00 | ✓ | 100% | 24134m | 43% | 2.9% | -37° |
| 02:00 | ✓ | 100% | 24135m | 49% | 2.9% | -34° |
| 03:00 | ✓ | 100% | 24134m | 55% | 2.9% | -29° |
| 04:00 | ✓ | 100% | 24135m | 53% | 2.9% | -24° |
| 05:00 | ✕ | 100% | 24135m | 52% | 2.9% | -17° |
| 06:00 | ✕ | 100% | 24135m | 50% | 2.9% | -11° |
| 07:00 | ✕ | 100% | 24135m | 33% | 2.9% | -4.3° |
| 08:00 | ✕ | 100% | 24135m | 17% | 2.9% | 1.8° |
| 09:00 | ✕ | 100% | 24134m | 0% | 2.9% | 7.3° |
| 10:00 | ✕ | 100% | 24134m | 0% | 2.9% | 12° |
| 11:00 | ✕ | 99% | 24134m | 0% | 2.9% | 15° |
| 12:00 | ✕ | 100% | 24135m | 0% | 2.9% | 17° |
| 13:00 | ✕ | 98% | 24135m | 0% | 2.9% | 17° |
| 14:00 | ✕ | 92% | 24134m | 0% | 2.9% | 15° |
| 15:00 | ✕ | 80% | 24134m | 0% | 2.9% | 12° |
| 16:00 | ✕ | 91% | 24135m | 0% | 2.9% | 7.9° |
| 17:00 | ✕ | 100% | 24135m | 0% | 2.9% | 2.7° |
| 18:00 | ✕ | 100% | 24134m | 0% | 2.9% | -3.1° |
| 19:00 | ✕ | 71% | 24134m | 0% | 2.9% | -9.2° |
| 20:00 | ✕ | 42% | 24135m | 0% | 2.9% | -15° |
| 21:00 | ✕ | 13% | 24135m | 0% | 2.9% | -21° |
| 22:00 | ✓ | 9.9% | 24135m | 0% | 2.9% | -26° |
| 23:00 | ✓ | 7.4% | 24135m | 0% | 2.9% | -29° |
| Wed, Mar 18 | ||||||
| 24:00 | ✓ | 4.8% | 24135m | 0% | 0.4% | -31° |
| 01:00 | ✓ | 4.4% | 24135m | 0% | 0.4% | -31° |
| 02:00 | ✓ | 4.1% | 24135m | 0% | 0.4% | -30° |
| 03:00 | ✓ | 3.7% | 24135m | 0% | 0.4% | -27° |
| 04:00 | ✓ | 4.1% | 24135m | 0% | 0.4% | -22° |
| 05:00 | ✕ | 4.6% | 24135m | 0% | 0.4% | -16° |
| 06:00 | ✕ | 5% | 24135m | 0% | 0.4% | -10° |
| 07:00 | ✕ | 8.9% | 24135m | 0% | 0.4% | -3.4° |
| 08:00 | ✕ | 13% | 24135m | 0% | 0.4% | 3.1° |
| 09:00 | ✕ | 17% | 24135m | 0% | 0.4% | 9.2° |
| 10:00 | ✕ | 14% | 24135m | 0% | 0.4% | 15° |
| 11:00 | ✕ | 12% | 24135m | 0% | 0.4% | 19° |
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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