Rule
Dark Skies
Alta - Dark Skies - Norwegian Fjords
Alta, Finnmark, Norway
Moonless nights with crystal-clear skies for Milky Way shots
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Oslo
Next opportunity
Dark Skies
Alta
Today · 17:07–06:01 · 13h window
Medium confidence
62%
Dark Skies
Alta
Tomorrow · 17:09–06:00
Medium
Dark Skies
Alta
Sat, Jan 17 · 24:00–02:00
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 Europe/Oslo | 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, Jan 11 | ||||||
| 19:00 | ✓ | 1% | 69760m | 0% | 41% | -36° |
| 20:00 | ✓ | 2% | 66820m | 0% | 41% | -34° |
| 21:00 | ✓ | 3% | 69760m | 0% | 41% | -31° |
| 22:00 | ✓ | 4% | 69740m | 0% | 41% | -27° |
| 23:00 | ✓ | 2% | 73720m | 0% | 41% | -22° |
| Mon, Jan 12 | ||||||
| 24:00 | ✓ | 0% | 73720m | 0% | 41% | -17° |
| 01:00 | ✓ | 0% | 73720m | 0% | 33% | -13° |
| 02:00 | ✓ | 0% | 76520m | 0% | 33% | -8.2° |
| 03:00 | ✓ | 0% | 76520m | 0% | 33% | -4.4° |
| 04:00 | ✓ | 0% | 76520m | 0% | 33% | -1.5° |
| 05:00 | ✓ | 0% | 76520m | 0% | 33% | 0.49° |
| 06:00 | ✓ | 0% | 76520m | 0% | 33% | 1.3° |
| 07:00 | ✕ | 0% | 73700m | 0% | 33% | 0.96° |
| 08:00 | ✕ | 0% | 73700m | 0% | 33% | -0.57° |
| 09:00 | ✕ | 0% | 73700m | 0% | 33% | -3.2° |
| 10:00 | ✕ | 0% | 73700m | 0% | 33% | -6.7° |
| 11:00 | ✕ | 0% | 73700m | 0% | 33% | -11° |
| 12:00 | ✕ | 0% | 73700m | 0% | 33% | -16° |
| 13:00 | ✕ | 0% | 73700m | 0% | 33% | -21° |
| 14:00 | ✕ | 0% | 76520m | 0% | 33% | -26° |
| 15:00 | ✕ | 0% | 76520m | 0% | 33% | -31° |
| 16:00 | ✕ | 0% | 76520m | 0% | 33% | -35° |
| 17:00 | ✓ | 0% | 78820m | 0% | 33% | -38° |
| 18:00 | ✓ | 0% | 78820m | 0% | 33% | -40° |
| 19:00 | ✓ | 0% | 78820m | 0% | 33% | -41° |
| 20:00 | ✓ | 0% | 78820m | 0% | 33% | -40° |
| 21:00 | ✓ | 0% | 78820m | 0% | 33% | -37° |
| 22:00 | ✓ | 0% | 78820m | 0% | 33% | -34° |
| 23:00 | ✓ | 0% | 76520m | 0% | 33% | -30° |
| Tue, Jan 13 | ||||||
| 24:00 | ✓ | 0% | 73700m | 0% | 33% | -25° |
| 01:00 | ✓ | 0% | 73700m | 0% | 24% | -20° |
| 02:00 | ✓ | 0% | 55800m | 0% | 24% | -15° |
| 03:00 | ✓ | 0% | 41420m | 0% | 24% | -11° |
| 04:00 | ✓ | 1% | 30180m | 0% | 24% | -7.7° |
| 05:00 | ✓ | 1% | 38520m | 0% | 24% | -5° |
| 06:00 | ✓ | 2% | 53140m | 0% | 24% | -3.3° |
| 07:00 | ✕ | 2% | 66780m | 0% | 24% | -2.7° |
| 08:00 | ✕ | 2% | 75000m | 0% | 24% | -3.3° |
| 09:00 | ✕ | 2% | 76420m | 0% | 24% | -5.1° |
| 10:00 | ✕ | 1% | 66960m | 0% | 24% | -7.8° |
| 11:00 | ✕ | 1% | 48580m | 0% | 24% | -11° |
| 12:00 | ✕ | 25% | 42060m | 0% | 24% | -16° |
| 13:00 | ✕ | 48% | 35760m | 0% | 24% | -21° |
| 14:00 | ✕ | 75% | 46740m | 0% | 24% | -26° |
| 15:00 | ✕ | 100% | 56200m | 0% | 24% | -31° |
| 16:00 | ✕ | 100% | 51800m | 0% | 24% | -35° |
| 17:00 | ✓ | 100% | 59040m | 0% | 24% | -40° |
| 18:00 | ✓ | 100% | 52540m | 0% | 24% | -43° |
| 19:00 | ✓ | 100% | 36200m | 0% | 24% | -44° |
| 20:00 | ✓ | 100% | 46400m | 0% | 24% | -44° |
| 21:00 | ✓ | 100% | 45580m | 0% | 24% | -43° |
| 22:00 | ✓ | 100% | 46080m | 0% | 24% | -40° |
| 23:00 | ✓ | 100% | 57920m | 0% | 24% | -36° |
| Wed, Jan 14 | ||||||
| 24:00 | ✓ | 100% | 52860m | 0% | 24% | -32° |
| 01:00 | ✓ | 100% | 51600m | 0% | 16% | -27° |
| 02:00 | ✓ | 100% | 51120m | 0% | 16% | -22° |
| 03:00 | ✓ | 100% | 57000m | 0% | 16% | -18° |
| 04:00 | ✓ | 100% | 60900m | 0% | 16% | -14° |
| 05:00 | ✓ | 96% | 54560m | 0% | 16% | -10° |
| 06:00 | ✕ | 98% | 41280m | 0% | 16% | -7.7° |
| 07:00 | ✕ | 96% | 62840m | 0% | 16% | -6.2° |
| 08:00 | ✕ | 95% | 67800m | 0% | 16% | -5.9° |
| 09:00 | ✕ | 95% | 42940m | 0% | 16% | -6.6° |
| 10:00 | ✕ | 74% | 47120m | 0% | 16% | -8.5° |
| 11:00 | ✕ | 80% | 66900m | 0% | 16% | -11° |
| 12:00 | ✕ | 88% | 69760m | 0% | 16% | -15° |
| 13:00 | ✕ | 79% | 67180m | 0% | 16% | -19° |
| 14:00 | ✕ | 63% | 72740m | 0% | 16% | -24° |
| 15:00 | ✕ | 67% | 71480m | 0% | 16% | -29° |
| 16:00 | ✕ | 88% | 71020m | 0% | 16% | -34° |
| 17:00 | ✓ | 88% | 65540m | 0% | 16% | -39° |
| 18:00 | ✓ | 98% | 68220m | 0% | 16% | -43° |
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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