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 · 24:00–01:00 · 1h window
Medium confidence
60%
🌛Moon Altitude-34.2°
☁️Total Cloud Coverage5%
Pristine Dark Skies (pristine)
Björkliden
Tomorrow · 02:00–03:06
🌛Moon Altitude:-22.1--16.3°
Medium
Pristine Dark Skies (pristine)
Björkliden
Fri, Mar 20 · 20:58–02:31
🌛Moon Altitude:-10.9-5.6°
Low
Pristine Dark Skies (pristine)
Björkliden
Sat, Mar 21 · 21:03–02:25
🌛Moon Altitude:-5-10.5°
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/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° |
|---|---|---|---|---|---|---|
| Thu, Mar 12 | ||||||
| 05:00 | ✕ | 100% | 43m | 13% | 39% | -5° |
| 06:00 | ✕ | 100% | 58m | 26% | 39% | -3.8° |
| 07:00 | ✕ | 100% | 59m | 39% | 39% | -4° |
| 08:00 | ✕ | 100% | 74m | 0% | 39% | -5.5° |
| 09:00 | ✕ | 100% | 52m | 0% | 39% | -8.2° |
| 10:00 | ✕ | 100% | 53m | 0% | 39% | -12° |
| 11:00 | ✕ | 100% | 172m | 0% | 39% | -17° |
| 12:00 | ✕ | 100% | 64m | 0% | 39% | -22° |
| 13:00 | ✕ | 100% | 563m | 0% | 39% | -28° |
| 14:00 | ✕ | 14% | 23575m | 0% | 39% | -34° |
| 15:00 | ✕ | 45% | 9912m | 0% | 39% | -40° |
| 16:00 | ✕ | 95% | 23043m | 0% | 39% | -45° |
| 17:00 | ✕ | 100% | 24134m | 7.4% | 39% | -49° |
| 18:00 | ✕ | 100% | 24135m | 15% | 39% | -52° |
| 19:00 | ✕ | 100% | 24134m | 22% | 39% | -52° |
| 20:00 | ✓ | 100% | 24134m | 19% | 39% | -51° |
| 21:00 | ✓ | 100% | 24135m | 37% | 39% | -47° |
| 22:00 | ✓ | 100% | 24135m | 56% | 39% | -43° |
| 23:00 | ✓ | 100% | 23739m | 65% | 39% | -37° |
| Fri, Mar 13 | ||||||
| 24:00 | ✓ | 100% | 11308m | 73% | 39% | -31° |
| 01:00 | ✕ | 100% | 20414m | 82% | 30% | -25° |
| 02:00 | ✕ | 100% | 9910m | 61% | 30% | -19° |
| 03:00 | ✕ | 100% | 1835m | 41% | 30% | -14° |
| 04:00 | ✕ | 100% | 24134m | 21% | 30% | -9.5° |
| 05:00 | ✕ | 100% | 24135m | 35% | 30% | -6° |
| 06:00 | ✕ | 100% | 24135m | 49% | 30% | -3.6° |
| 07:00 | ✕ | 100% | 24134m | 64% | 30% | -2.6° |
| 08:00 | ✕ | 100% | 24135m | 67% | 30% | -2.9° |
| 09:00 | ✕ | 100% | 24134m | 71% | 30% | -4.5° |
| 10:00 | ✕ | 98% | 24134m | 74% | 30% | -7.3° |
| 11:00 | ✕ | 100% | 24135m | 80% | 30% | -11° |
| 12:00 | ✕ | 100% | 24135m | 86% | 30% | -16° |
| 13:00 | ✕ | 100% | 206m | 92% | 30% | -21° |
| 14:00 | ✕ | 100% | 33m | 84% | 30% | -27° |
| 15:00 | ✕ | 100% | 32m | 76% | 30% | -33° |
| 16:00 | ✕ | 100% | 40m | 69% | 30% | -39° |
| 17:00 | ✕ | 100% | 36m | 70% | 30% | -44° |
| 18:00 | ✕ | 100% | 47m | 71% | 30% | -48° |
| 19:00 | ✕ | 100% | 70m | 72% | 30% | -50° |
| 20:00 | ✓ | 100% | 172m | 48% | 30% | -50° |
| 21:00 | ✓ | 100% | 11059m | 24% | 30% | -49° |
| 22:00 | ✓ | 100% | 9493m | 0% | 30% | -45° |
| 23:00 | ✓ | 51% | 24134m | 0% | 30% | -40° |
| Sat, Mar 14 | ||||||
| 24:00 | ✓ | 5% | 24134m | 0% | 30% | -34° |
| 01:00 | ✓ | 21% | 24135m | 0% | 22% | -28° |
| 02:00 | ✓ | 5% | 24135m | 0% | 22% | -22° |
| 03:00 | ✓ | 5% | 24135m | 0% | 22% | -16° |
| 04:00 | ✕ | 5% | 24135m | 0% | 22% | -11° |
| 05:00 | ✕ | 5% | 24134m | 0% | 22% | -6.6° |
| 06:00 | ✕ | 5.7% | 24134m | 0% | 22% | -3.1° |
| 07:00 | ✕ | 20% | 24135m | 0% | 22% | -0.87° |
| 08:00 | ✕ | 64% | 24134m | 0% | 22% | 0.05° |
| 09:00 | ✕ | 85% | 24135m | 0% | 22% | -0.4° |
| 10:00 | ✕ | 73% | 24135m | 0% | 22% | -2.2° |
| 11:00 | ✕ | 100% | 24134m | 0% | 22% | -5.2° |
| 12:00 | ✕ | 65% | 24135m | 0% | 22% | -9.3° |
| 13:00 | ✕ | 70% | 24134m | 0% | 22% | -14° |
| 14:00 | ✕ | 70% | 24135m | 0% | 22% | -20° |
| 15:00 | ✕ | 33% | 24135m | 0% | 22% | -26° |
| 16:00 | ✕ | 100% | 24135m | 0% | 22% | -31° |
| 17:00 | ✕ | 100% | 24134m | 0% | 22% | -37° |
| 18:00 | ✕ | 100% | 24135m | 0% | 22% | -42° |
| 19:00 | ✕ | 100% | 24134m | 0% | 22% | -45° |
| 20:00 | ✓ | 100% | 24134m | 1.6% | 22% | -47° |
| 21:00 | ✓ | 100% | 24135m | 3.3% | 22% | -47° |
| 22:00 | ✓ | 100% | 24135m | 4.9% | 22% | -45° |
| 23:00 | ✓ | 100% | 24134m | 20% | 22% | -41° |
| Sun, Mar 15 | ||||||
| 24:00 | ✓ | 100% | 24135m | 35% | 22% | -36° |
| 01:00 | ✓ | 100% | 13148m | 50% | 14% | -30° |
| 02:00 | ✓ | 100% | 24135m | 57% | 14% | -24° |
| 03:00 | ✓ | 100% | 24135m | 63% | 14% | -18° |
| 04:00 | ✕ | 100% | 24135m | 70% | 14% | -12° |
| 05:00 | ✕ | 100% | 23928m | 51% | 14% | -6.7° |
| 06:00 | ✕ | 100% | 24135m | 32% | 14% | -2.3° |
| 07:00 | ✕ | 100% | 24135m | 13% | 14% | 1.1° |
| 08:00 | ✕ | 100% | 24045m | 26% | 14% | 3.2° |
| 09:00 | ✕ | 100% | 23954m | 39% | 14% | 4° |
| 10:00 | ✕ | 100% | 23864m | 52% | 14% | 3.3° |
| 11:00 | ✕ | 100% | 17280m | 54% | 14% | 1.3° |
| 12:00 | ✕ | 100% | 10695m | 57% | 14% | -2° |
| 13:00 | ✕ | 100% | 4111m | 59% | 14% | -6.3° |
| 14:00 | ✕ | 100% | 4018m | 50% | 14% | -11° |
| 15:00 | ✕ | 100% | 3926m | 41% | 14% | -17° |
| 16:00 | ✕ | 100% | 3833m | 32% | 14% | -23° |
| 17:00 | ✕ | 100% | 3795m | 32% | 14% | -29° |
| 18:00 | ✕ | 100% | 3758m | 33% | 14% | -34° |
| 19:00 | ✕ | 100% | 3720m | 33% | 14% | -38° |
| 20:00 | ✓ | 100% | 10525m | 49% | 14% | -41° |
| 21:00 | ✓ | 100% | 17330m | 64% | 14% | -43° |
| 22:00 | ✓ | 100% | 24135m | 80% | 14% | -42° |
| 23:00 | ✓ | 100% | 24135m | 87% | 14% | -40° |
| Mon, Mar 16 | ||||||
| 24:00 | ✓ | 100% | 24135m | 93% | 14% | -36° |
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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