Rule
Dark Skies
Lauterbrunnen - Dark Skies - Alps
Lauterbrunnen, Bern, Switzerland
Moonless nights with crystal-clear skies for deep-sky photography
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Zurich
Next opportunity
Pristine Dark Skies (pristine)
Lauterbrunnen
Sat, Mar 7 · 21:00–01:00 · 4h window
Low confidence
36%
🌛Moon Altitude-20.6-6.6°
☁️Total Cloud Coverage1.8-15.8%
Good Dark Skies
Lauterbrunnen
Sat, Mar 14 · 01:00–02:00
🌛Moon Altitude:-35.1°
Low
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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° |
|---|---|---|---|---|---|---|
| Wed, Mar 4 | ||||||
| 02:00 | ✓ | 0.3% | 24134m | 0% | 99% | 45° |
| 03:00 | ✓ | 3.4% | 24134m | 0% | 99% | 39° |
| 04:00 | ✓ | 1.9% | 24135m | 0% | 99% | 32° |
| 05:00 | ✓ | 2.8% | 24134m | 0% | 99% | 23° |
| 06:00 | ✕ | 3.9% | 24134m | 0% | 99% | 13° |
| 07:00 | ✕ | 3.4% | 24134m | 0% | 99% | 3.3° |
| 08:00 | ✕ | 0% | 24135m | 0% | 99% | -6.8° |
| 09:00 | ✕ | 0.3% | 24135m | 0% | 99% | -17° |
| 10:00 | ✕ | 0% | 24134m | 0% | 99% | -26° |
| 11:00 | ✕ | 0% | 24135m | 0% | 99% | -34° |
| 12:00 | ✕ | 0.2% | 24134m | 0% | 99% | -40° |
| 13:00 | ✕ | 3.2% | 24134m | 0% | 99% | -43° |
| 14:00 | ✕ | 3.4% | 24134m | 0% | 99% | -43° |
| 15:00 | ✕ | 5.4% | 24134m | 0% | 99% | -40° |
| 16:00 | ✕ | 30% | 24135m | 0% | 99% | -33° |
| 17:00 | ✕ | 31% | 24135m | 0% | 99% | -26° |
| 18:00 | ✕ | 4.5% | 24135m | 0% | 99% | -16° |
| 19:00 | ✓ | 4.5% | 24135m | 0% | 99% | -6.8° |
| 20:00 | ✓ | 15% | 23477m | 0% | 99% | 3° |
| 21:00 | ✓ | 11% | 20236m | 0% | 99% | 13° |
| 22:00 | ✓ | 19% | 8699m | 0% | 99% | 22° |
| 23:00 | ✓ | 20% | 7855m | 0% | 99% | 30° |
| Thu, Mar 5 | ||||||
| 24:00 | ✓ | 27% | 8354m | 0% | 99% | 36° |
| 01:00 | ✓ | 56% | 10529m | 0% | 96% | 39° |
| 02:00 | ✓ | 35% | 9827m | 0% | 96% | 40° |
| 03:00 | ✓ | 14% | 22239m | 0% | 96% | 37° |
| 04:00 | ✓ | 5% | 24134m | 0% | 96% | 32° |
| 05:00 | ✓ | 5% | 24134m | 0% | 96% | 24° |
| 06:00 | ✕ | 1.5% | 24135m | 0% | 96% | 16° |
| 07:00 | ✕ | 2.2% | 24134m | 0% | 96% | 5.9° |
| 08:00 | ✕ | 68% | 24135m | 0% | 96% | -4.2° |
| 09:00 | ✕ | 60% | 24135m | 0% | 96% | -14° |
| 10:00 | ✕ | 99% | 24134m | 0% | 96% | -24° |
| 11:00 | ✕ | 92% | 24134m | 0% | 96% | -33° |
| 12:00 | ✕ | 95% | 24134m | 0% | 96% | -41° |
| 13:00 | ✕ | 100% | 24135m | 0% | 96% | -47° |
| 14:00 | ✕ | 100% | 24134m | 0% | 96% | -50° |
| 15:00 | ✕ | 100% | 24134m | 0% | 96% | -48° |
| 16:00 | ✕ | 16% | 24134m | 0% | 96% | -44° |
| 17:00 | ✕ | 35% | 18979m | 0% | 96% | -37° |
| 18:00 | ✕ | 83% | 19630m | 0% | 96% | -28° |
| 19:00 | ✕ | 97% | 10719m | 0% | 96% | -18° |
| 20:00 | ✓ | 99% | 291m | 0% | 96% | -8.5° |
| 21:00 | ✓ | 99% | 2256m | 0% | 96% | 1.2° |
| 22:00 | ✓ | 100% | 14649m | 0% | 96% | 11° |
| 23:00 | ✓ | 97% | 12132m | 0% | 96% | 19° |
| Fri, Mar 6 | ||||||
| 24:00 | ✓ | 98% | 14773m | 0% | 96% | 26° |
| 01:00 | ✓ | 98% | 11308m | 0% | 90% | 31° |
| 02:00 | ✓ | 100% | 9938m | 0% | 90% | 34° |
| 03:00 | ✓ | 100% | 11350m | 0% | 90% | 34° |
| 04:00 | ✓ | 100% | 13152m | 0% | 90% | 30° |
| 05:00 | ✓ | 100% | 24134m | 0% | 90% | 25° |
| 06:00 | ✕ | 100% | 24134m | 0% | 90% | 17° |
| 07:00 | ✕ | 100% | 24135m | 0% | 90% | 8.2° |
| 08:00 | ✕ | 100% | 24134m | 0% | 90% | -1.4° |
| 09:00 | ✕ | 100% | 24135m | 0% | 90% | -11° |
| 10:00 | ✕ | 100% | 24134m | 0% | 90% | -22° |
| 11:00 | ✕ | 100% | 24134m | 0% | 90% | -32° |
| 12:00 | ✕ | 100% | 13849m | 0% | 90% | -41° |
| 13:00 | ✕ | 100% | 13808m | 0% | 90% | -49° |
| 14:00 | ✕ | 100% | 13846m | 0% | 90% | -54° |
| 15:00 | ✕ | 100% | 14572m | 0% | 90% | -56° |
| 16:00 | ✕ | 100% | 24134m | 0% | 90% | -53° |
| 17:00 | ✕ | 93% | 24134m | 0% | 90% | -47° |
| 18:00 | ✕ | 92% | 24134m | 0% | 90% | -39° |
| 19:00 | ✕ | 88% | 606m | 0% | 90% | -29° |
| 20:00 | ✓ | 100% | 288m | 0% | 90% | -20° |
| 21:00 | ✓ | 100% | 484m | 0% | 90% | -9.9° |
| 22:00 | ✓ | 100% | 942m | 0% | 90% | -0.35° |
| 23:00 | ✓ | 100% | 22997m | 0% | 90% | 8.5° |
| Sat, Mar 7 | ||||||
| 24:00 | ✓ | 100% | 24135m | 0% | 90% | 16° |
| 01:00 | ✓ | 100% | 10803m | 0% | 84% | 23° |
| 02:00 | ✓ | 95% | 8266m | 0% | 84% | 27° |
| 03:00 | ✓ | 72% | 9068m | 0% | 84% | 28° |
| 04:00 | ✓ | 69% | 10366m | 0% | 84% | 27° |
| 05:00 | ✓ | 80% | 8406m | 0% | 84% | 24° |
| 06:00 | ✕ | 67% | 10357m | 0% | 84% | 18° |
| 07:00 | ✕ | 44% | 15199m | 0% | 84% | 10° |
| 08:00 | ✕ | 42% | 18178m | 0% | 84% | 1.5° |
| 09:00 | ✕ | 41% | 21156m | 0% | 84% | -8.1° |
| 10:00 | ✕ | 39% | 24135m | 0% | 84% | -18° |
| 11:00 | ✕ | 37% | 16353m | 0% | 84% | -28° |
| 12:00 | ✕ | 34% | 8570m | 0% | 84% | -38° |
| 13:00 | ✕ | 31% | 788m | 0% | 84% | -47° |
| 14:00 | ✕ | 35% | 694m | 0% | 84% | -55° |
| 15:00 | ✕ | 38% | 599m | 0% | 84% | -60° |
| 16:00 | ✕ | 41% | 505m | 0% | 84% | -60° |
| 17:00 | ✕ | 41% | 541m | 0% | 84% | -56° |
| 18:00 | ✕ | 41% | 578m | 0% | 84% | -49° |
| 19:00 | ✕ | 41% | 614m | 0% | 84% | -40° |
| 20:00 | ✓ | 28% | 8454m | 0% | 84% | -30° |
| 21:00 | ✓ | 16% | 16295m | 0% | 84% | -21° |
| 22:00 | ✓ | 3.3% | 24135m | 0% | 84% | -11° |
| 23:00 | ✓ | 2.5% | 24135m | 0% | 84% | -1.8° |
| Sun, Mar 8 | ||||||
| 24:00 | ✓ | 1.8% | 24135m | 0% | 84% | 6.6° |
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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