Rule
Dark Skies
Björkliden - Dark Skies - Swedish Lapland
Björkliden, Norrbotten, Sweden
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/Stockholm
Next opportunity
Pristine Dark Skies (pristine)
Björkliden
Tomorrow · 19:59–03:37 · 8h window
Medium confidence
42%
🌛Moon Altitude-18.8-9.9°
☁️Total Cloud Coverage0-5%
Good Dark Skies
Björkliden
Sun, Mar 8 · 20:07–21:00
🌛Moon Altitude:-30.2°
Medium
Good Dark Skies
Björkliden
Mon, Mar 9 · 03:00–03:29
🌛Moon Altitude:0.6°
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/Stockholm | 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 | ||||||
| 05:00 | ✕ | 100% | 24134m | 24% | 99% | 10° |
| 06:00 | ✕ | 89% | 24134m | 23% | 99% | 3.9° |
| 07:00 | ✕ | 100% | 24134m | 22% | 99% | -2.4° |
| 08:00 | ✕ | 100% | 24135m | 37% | 99% | -8.5° |
| 09:00 | ✕ | 100% | 21252m | 19% | 99% | -14° |
| 10:00 | ✕ | 100% | 9471m | 0% | 99% | -19° |
| 11:00 | ✕ | 99% | 115m | 0% | 99% | -22° |
| 12:00 | ✕ | 44% | 24134m | 0% | 99% | -24° |
| 13:00 | ✕ | 5% | 24134m | 0% | 99% | -24° |
| 14:00 | ✕ | 5% | 24134m | 0% | 99% | -23° |
| 15:00 | ✕ | 5% | 24134m | 0% | 99% | -20° |
| 16:00 | ✕ | 5% | 24135m | 0% | 99% | -16° |
| 17:00 | ✕ | 5% | 24135m | 0% | 99% | -11° |
| 18:00 | ✕ | 4.7% | 24135m | 0% | 99% | -5.5° |
| 19:00 | ✓ | 87% | 24135m | 0% | 99% | 0.35° |
| 20:00 | ✓ | 5% | 24135m | 0% | 99% | 6.1° |
| 21:00 | ✓ | 0% | 24134m | 0% | 99% | 11° |
| 22:00 | ✓ | 0.3% | 24134m | 0% | 99% | 16° |
| 23:00 | ✓ | 3.8% | 24135m | 0% | 99% | 19° |
| Thu, Mar 5 | ||||||
| 24:00 | ✓ | 5% | 24135m | 0% | 99% | 21° |
| 01:00 | ✕ | 9.5% | 24134m | 0% | 96% | 22° |
| 02:00 | ✕ | 5% | 24135m | 0% | 96% | 20° |
| 03:00 | ✕ | 5.7% | 24134m | 0% | 96% | 18° |
| 04:00 | ✕ | 100% | 24134m | 0% | 96% | 13° |
| 05:00 | ✕ | 100% | 24134m | 0% | 96% | 8.3° |
| 06:00 | ✕ | 80% | 24135m | 0% | 96% | 2.5° |
| 07:00 | ✕ | 91% | 24134m | 0% | 96% | -3.7° |
| 08:00 | ✕ | 38% | 24135m | 0% | 96% | -10° |
| 09:00 | ✕ | 100% | 24135m | 0% | 96% | -16° |
| 10:00 | ✕ | 100% | 24134m | 0% | 96% | -21° |
| 11:00 | ✕ | 100% | 464m | 0% | 96% | -26° |
| 12:00 | ✕ | 100% | 56m | 0% | 96% | -29° |
| 13:00 | ✕ | 100% | 35m | 0% | 96% | -31° |
| 14:00 | ✕ | 100% | 43m | 0% | 96% | -30° |
| 15:00 | ✕ | 100% | 60m | 0% | 96% | -28° |
| 16:00 | ✕ | 100% | 150m | 0% | 96% | -25° |
| 17:00 | ✕ | 100% | 249m | 0% | 96% | -21° |
| 18:00 | ✕ | 100% | 274m | 0% | 96% | -15° |
| 19:00 | ✓ | 100% | 14186m | 0% | 96% | -9.4° |
| 20:00 | ✓ | 100% | 23543m | 0% | 96% | -3.6° |
| 21:00 | ✓ | 100% | 23715m | 0% | 96% | 1.9° |
| 22:00 | ✓ | 100% | 24134m | 0% | 96% | 6.9° |
| 23:00 | ✓ | 100% | 23756m | 0% | 96% | 11° |
| Fri, Mar 6 | ||||||
| 24:00 | ✓ | 100% | 23542m | 0% | 96% | 14° |
| 01:00 | ✓ | 31% | 4773m | 0% | 90% | 15° |
| 02:00 | ✓ | 97% | 418m | 0% | 90% | 15° |
| 03:00 | ✓ | 100% | 890m | 0% | 90% | 14° |
| 04:00 | ✕ | 100% | 23828m | 0% | 90% | 11° |
| 05:00 | ✕ | 99% | 24134m | 0% | 90% | 6.3° |
| 06:00 | ✕ | 100% | 24134m | 0% | 90% | 1.1° |
| 07:00 | ✕ | 100% | 24135m | 0% | 90% | -4.8° |
| 08:00 | ✕ | 62% | 24134m | 0% | 90% | -11° |
| 09:00 | ✕ | 43% | 24135m | 0% | 90% | -17° |
| 10:00 | ✕ | 90% | 24134m | 0% | 90% | -23° |
| 11:00 | ✕ | 42% | 24134m | 17% | 90% | -28° |
| 12:00 | ✕ | 100% | 24135m | 33% | 90% | -33° |
| 13:00 | ✕ | 100% | 24134m | 50% | 90% | -36° |
| 14:00 | ✕ | 100% | 24134m | 38% | 90% | -37° |
| 15:00 | ✕ | 100% | 24135m | 27% | 90% | -36° |
| 16:00 | ✕ | 100% | 24134m | 15% | 90% | -33° |
| 17:00 | ✕ | 86% | 24134m | 10% | 90% | -29° |
| 18:00 | ✕ | 0% | 24134m | 5% | 90% | -24° |
| 19:00 | ✓ | 0% | 24135m | 0% | 90% | -19° |
| 20:00 | ✓ | 1.8% | 24135m | 0% | 90% | -13° |
| 21:00 | ✓ | 5% | 24134m | 0% | 90% | -7.3° |
| 22:00 | ✓ | 5% | 24134m | 0% | 90% | -1.9° |
| 23:00 | ✓ | 5% | 24134m | 0% | 90% | 2.7° |
| Sat, Mar 7 | ||||||
| 24:00 | ✓ | 5% | 24135m | 0% | 90% | 6.4° |
| 01:00 | ✓ | 5% | 24135m | 0% | 84% | 8.8° |
| 02:00 | ✓ | 5% | 24135m | 0% | 84% | 9.9° |
| 03:00 | ✓ | 5% | 24135m | 0% | 84% | 9.4° |
| 04:00 | ✕ | 5% | 24134m | 0% | 84% | 7.4° |
| 05:00 | ✕ | 5% | 24135m | 0% | 84% | 4.2° |
| 06:00 | ✕ | 22% | 24134m | 0% | 84% | -0.25° |
| 07:00 | ✕ | 65% | 24135m | 0% | 84% | -5.5° |
| 08:00 | ✕ | 77% | 24135m | 0% | 84% | -11° |
| 09:00 | ✕ | 88% | 24135m | 0% | 84% | -18° |
| 10:00 | ✕ | 100% | 24135m | 0% | 84% | -24° |
| 11:00 | ✕ | 100% | 24135m | 0% | 84% | -30° |
| 12:00 | ✕ | 100% | 24135m | 0% | 84% | -35° |
| 13:00 | ✕ | 100% | 24135m | 0% | 84% | -39° |
| 14:00 | ✕ | 100% | 24135m | 0% | 84% | -41° |
| 15:00 | ✕ | 100% | 24135m | 0% | 84% | -42° |
| 16:00 | ✕ | 100% | 24135m | 0% | 84% | -40° |
| 17:00 | ✕ | 100% | 24135m | 0% | 84% | -37° |
| 18:00 | ✕ | 100% | 24135m | 0% | 84% | -33° |
| 19:00 | ✕ | 100% | 24135m | 0% | 84% | -28° |
| 20:00 | ✓ | 100% | 24135m | 0% | 84% | -22° |
| 21:00 | ✓ | 100% | 24135m | 0% | 84% | -16° |
| 22:00 | ✓ | 100% | 24135m | 0% | 84% | -10° |
| 23:00 | ✓ | 100% | 24135m | 0% | 84% | -5.3° |
| Sun, Mar 8 | ||||||
| 24:00 | ✓ | 100% | 24135m | 0% | 84% | -0.98° |
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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