Rule
Dark Skies
St. Moritz - Dark Skies - Alps
Saint Moritz, Canton Grisons, Switzerland
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/Zurich
Next opportunity
Dark Skies
St. Moritz
Today · 18:43–20:00 · 1h window
Medium confidence
68%
Dark Skies
St. Moritz
Tomorrow · 02:00–03:00
Medium
Dark Skies
St. Moritz
Tomorrow · 05:00–06:00
High
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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/Zurich | 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 | ||||||
| 13:00 | ✕ | 0% | 66060m | 0% | 41% | -14° |
| 14:00 | ✕ | 0% | 71920m | 0% | 41% | -24° |
| 15:00 | ✕ | 0% | 73880m | 0% | 41% | -34° |
| 16:00 | ✕ | 0% | 74100m | 0% | 41% | -43° |
| 17:00 | ✕ | 0% | 75580m | 0% | 41% | -52° |
| 18:00 | ✓ | 0% | 75540m | 0% | 41% | -58° |
| 19:00 | ✓ | 0% | 75660m | 0% | 41% | -60° |
| 20:00 | ✓ | 63% | 76440m | 0% | 41% | -57° |
| 21:00 | ✓ | 85% | 78260m | 0% | 41% | -51° |
| 22:00 | ✓ | 78% | 79440m | 0% | 41% | -43° |
| 23:00 | ✓ | 52% | 80820m | 0% | 41% | -33° |
| Mon, Jan 12 | ||||||
| 24:00 | ✓ | 100% | 82900m | 0% | 41% | -23° |
| 01:00 | ✓ | 29% | 83220m | 0% | 33% | -14° |
| 02:00 | ✓ | 6% | 80940m | 0% | 33% | -4.2° |
| 03:00 | ✓ | 47% | 78140m | 0% | 33% | 4.6° |
| 04:00 | ✓ | 100% | 75880m | 0% | 33% | 12° |
| 05:00 | ✓ | 8% | 77420m | 0% | 33% | 19° |
| 06:00 | ✓ | 100% | 63520m | 0% | 33% | 23° |
| 07:00 | ✕ | 75% | 37420m | 8% | 33% | 25° |
| 08:00 | ✕ | 86% | 14740m | 13% | 33% | 24° |
| 09:00 | ✕ | 77% | 11200m | 8% | 33% | 21° |
| 10:00 | ✕ | 100% | 15380m | 5% | 33% | 15° |
| 11:00 | ✕ | 70% | 19220m | 0% | 33% | 7.9° |
| 12:00 | ✕ | 100% | 24380m | 0% | 33% | -0.57° |
| 13:00 | ✕ | 100% | 39560m | 0% | 33% | -9.9° |
| 14:00 | ✕ | 77% | 48520m | 8% | 33% | -20° |
| 15:00 | ✕ | 66% | 49320m | 3% | 33% | -30° |
| 16:00 | ✕ | 63% | 47660m | 0% | 33% | -40° |
| 17:00 | ✕ | 85% | 48300m | 0% | 33% | -49° |
| 18:00 | ✓ | 90% | 34500m | 0% | 33% | -58° |
| 19:00 | ✓ | 93% | 32280m | 0% | 33% | -63° |
| 20:00 | ✓ | 72% | 36060m | 0% | 33% | -64° |
| 21:00 | ✓ | 80% | 40520m | 0% | 33% | -60° |
| 22:00 | ✓ | 100% | 41620m | 0% | 33% | -53° |
| 23:00 | ✓ | 100% | 40520m | 0% | 33% | -44° |
| Tue, Jan 13 | ||||||
| 24:00 | ✓ | 100% | 41000m | 0% | 33% | -34° |
| 01:00 | ✓ | 100% | 40840m | 0% | 24% | -24° |
| 02:00 | ✓ | 100% | 41020m | 0% | 24% | -14° |
| 03:00 | ✓ | 94% | 41520m | 0% | 24% | -5.1° |
| 04:00 | ✓ | 83% | 41280m | 0% | 24% | 3.3° |
| 05:00 | ✓ | 60% | 44160m | 0% | 24% | 10° |
| 06:00 | ✓ | 99% | 47120m | 0% | 24% | 16° |
| 07:00 | ✕ | 100% | 53960m | 0% | 24% | 19° |
| 08:00 | ✕ | 99% | 57800m | 0% | 24% | 21° |
| 09:00 | ✕ | 100% | 52530m | 0% | 24% | 19° |
| 10:00 | ✕ | 100% | 42120m | 0% | 24% | 16° |
| 11:00 | ✕ | 100% | 33740m | 0% | 24% | 10° |
| 12:00 | ✕ | 100% | 33300m | 0% | 24% | 2.8° |
| 13:00 | ✕ | 100% | 26720m | 0% | 24% | -5.6° |
| 14:00 | ✕ | 100% | 25380m | 0% | 24% | -15° |
| 15:00 | ✕ | 100% | 38260m | 0% | 24% | -25° |
| 16:00 | ✕ | 91% | 46020m | 0% | 24% | -35° |
| 17:00 | ✕ | 86% | 33220m | 0% | 24% | -45° |
| 18:00 | ✓ | 99% | 34500m | 0% | 24% | -54° |
| 19:00 | ✓ | 100% | 31560m | 0% | 24% | -62° |
| 20:00 | ✓ | 94% | 24940m | 0% | 24% | -67° |
| 21:00 | ✓ | 66% | 12860m | 0% | 24% | -67° |
| 22:00 | ✓ | 55% | 2040m | 0% | 24% | -62° |
| 23:00 | ✓ | 89% | 420m | 0% | 24% | -53° |
| Wed, Jan 14 | ||||||
| 24:00 | ✓ | 87% | 460m | 0% | 24% | -44° |
| 01:00 | ✓ | 87% | 380m | 0% | 16% | -34° |
| 02:00 | ✓ | 73% | 400m | 0% | 16% | -24° |
| 03:00 | ✓ | 88% | 400m | 0% | 16% | -15° |
| 04:00 | ✓ | 72% | 660m | 0% | 16% | -5.7° |
| 05:00 | ✓ | 87% | 1000m | 1% | 16% | 2.2° |
| 06:00 | ✓ | 100% | 1000m | 2% | 16% | 8.9° |
| 07:00 | ✕ | 100% | 1000m | 3% | 16% | 14° |
| 08:00 | ✕ | 100% | 3580m | 4% | 16% | 17° |
| 09:00 | ✕ | 100% | 9700m | 6% | 16% | 17° |
| 10:00 | ✕ | 98% | 12500m | 8% | 16% | 16° |
| 11:00 | ✕ | 82% | 18980m | 10% | 16% | 12° |
| 12:00 | ✕ | 88% | 25140m | 11% | 16% | 6.2° |
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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