Rule
Dark Skies
Luleå - Dark Skies - Swedish Lapland
Luleå, 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
Excellent Dark Skies (pristine)
Luleå
Tomorrow · 18:47–20:00 · 1h window
Medium confidence
48%
🌛Moon Altitude-42.5--37.5°
☁️Total Cloud Coverage8.3-9%
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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° |
|---|---|---|---|---|---|---|
| Fri, Feb 13 | ||||||
| 19:00 | ✓ | 100% | 4042m | 0% | 16% | -48° |
| 20:00 | ✓ | 100% | 540m | 0% | 16% | -51° |
| 21:00 | ✓ | 100% | 1246m | 0% | 16% | -52° |
| 22:00 | ✓ | 100% | 2284m | 0% | 16% | -50° |
| 23:00 | ✓ | 100% | 3263m | 0% | 16% | -47° |
| Sat, Feb 14 | ||||||
| 24:00 | ✓ | 100% | 2913m | 0% | 16% | -42° |
| 01:00 | ✓ | 100% | 2919m | 0% | 9.3% | -37° |
| 02:00 | ✓ | 100% | 3551m | 0% | 9.3% | -31° |
| 03:00 | ✓ | 100% | 3842m | 0% | 9.3% | -25° |
| 04:00 | ✓ | 100% | 4642m | 0% | 9.3% | -19° |
| 05:00 | ✕ | 100% | 5193m | 0% | 9.3% | -14° |
| 06:00 | ✕ | 100% | 5629m | 0% | 9.3% | -9° |
| 07:00 | ✕ | 97% | 6155m | 0% | 9.3% | -5.4° |
| 08:00 | ✕ | 77% | 7754m | 0% | 9.3% | -3° |
| 09:00 | ✕ | 57% | 13773m | 0% | 9.3% | -1.8° |
| 10:00 | ✕ | 36% | 18719m | 0% | 9.3% | -2° |
| 11:00 | ✕ | 27% | 20341m | 0% | 9.3% | -3.6° |
| 12:00 | ✕ | 36% | 18984m | 0% | 9.3% | -6.3° |
| 13:00 | ✕ | 40% | 20692m | 0% | 9.3% | -10° |
| 14:00 | ✕ | 24% | 23404m | 0% | 9.3% | -15° |
| 15:00 | ✕ | 24% | 18375m | 0% | 9.3% | -20° |
| 16:00 | ✕ | 8% | 24135m | 0% | 9.3% | -26° |
| 17:00 | ✕ | 5% | 24134m | 0% | 9.3% | -32° |
| 18:00 | ✓ | 8.3% | 24124m | 0% | 9.3% | -38° |
| 19:00 | ✓ | 9% | 24131m | 0% | 9.3% | -43° |
| 20:00 | ✓ | 76% | 3359m | 0% | 9.3% | -46° |
| 21:00 | ✓ | 76% | 9032m | 0% | 9.3% | -49° |
| 22:00 | ✓ | 49% | 16886m | 0% | 9.3% | -49° |
| 23:00 | ✓ | 41% | 17443m | 0% | 9.3% | -47° |
| Sun, Feb 15 | ||||||
| 24:00 | ✓ | 35% | 17502m | 0% | 9.3% | -44° |
| 01:00 | ✓ | 35% | 17797m | 0% | 4.2% | -39° |
| 02:00 | ✓ | 31% | 17862m | 0% | 4.2% | -33° |
| 03:00 | ✓ | 44% | 24135m | 0% | 4.2% | -27° |
| 04:00 | ✓ | 46% | 24134m | 0% | 4.2% | -21° |
| 05:00 | ✕ | 24% | 24135m | 0% | 4.2% | -15° |
| 06:00 | ✕ | 61% | 24135m | 0% | 4.2% | -10° |
| 07:00 | ✕ | 57% | 17348m | 0% | 4.2% | -5.5° |
| 08:00 | ✕ | 96% | 17655m | 0% | 4.2% | -1.9° |
| 09:00 | ✕ | 56% | 17501m | 0% | 4.2% | 0.4° |
| 10:00 | ✕ | 88% | 24135m | 0% | 4.2% | 1.4° |
| 11:00 | ✕ | 90% | 24134m | 0% | 4.2% | 1.1° |
| 12:00 | ✕ | 44% | 11160m | 0% | 4.2% | -0.64° |
| 13:00 | ✕ | 100% | 11170m | 0% | 4.2% | -3.6° |
| 14:00 | ✕ | 84% | 18419m | 0% | 4.2% | -7.6° |
| 15:00 | ✕ | 95% | 18413m | 0% | 4.2% | -13° |
| 16:00 | ✕ | 78% | 24135m | 0% | 4.2% | -18° |
| 17:00 | ✕ | 100% | 19966m | 0% | 4.2% | -24° |
| 18:00 | ✓ | 91% | 24135m | 0% | 4.2% | -30° |
| 19:00 | ✓ | 100% | 24135m | 0% | 4.2% | -35° |
| 20:00 | ✓ | 100% | 24134m | 0% | 4.2% | -40° |
| 21:00 | ✓ | 100% | 24135m | 0% | 4.2% | -43° |
| 22:00 | ✓ | 100% | 24134m | 0% | 4.2% | -45° |
| 23:00 | ✓ | 87% | 24135m | 0% | 4.2% | -45° |
| Mon, Feb 16 | ||||||
| 24:00 | ✓ | 44% | 17917m | 0% | 4.2% | -43° |
| 01:00 | ✓ | 62% | 17918m | 0% | 1.2% | -39° |
| 02:00 | ✓ | 70% | 19848m | 0% | 1.2% | -34° |
| 03:00 | ✓ | 78% | 21777m | 0% | 1.2% | -29° |
| 04:00 | ✓ | 87% | 23707m | 0% | 1.2% | -22° |
| 05:00 | ✕ | 91% | 23850m | 0% | 1.2% | -16° |
| 06:00 | ✕ | 96% | 23992m | 0% | 1.2% | -10° |
| 07:00 | ✕ | 100% | 24135m | 0% | 1.2% | -5.2° |
| 08:00 | ✕ | 100% | 24135m | 5% | 1.2% | -0.64° |
| 09:00 | ✕ | 100% | 24135m | 10% | 1.2% | 2.8° |
| 10:00 | ✕ | 100% | 24135m | 15% | 1.2% | 5.1° |
| 11:00 | ✕ | 100% | 24135m | 10% | 1.2% | 5.9° |
| 12:00 | ✕ | 100% | 24135m | 5% | 1.2% | 5.3° |
| 13:00 | ✕ | 100% | 24135m | 0% | 1.2% | 3.3° |
| 14:00 | ✕ | 100% | 24135m | 0% | 1.2% | 0.11° |
| 15:00 | ✕ | 100% | 24135m | 0% | 1.2% | -4.2° |
| 16:00 | ✕ | 100% | 24135m | 0% | 1.2% | -9.2° |
| 17:00 | ✕ | 100% | 24135m | 0% | 1.2% | -15° |
| 18:00 | ✓ | 100% | 24135m | 0% | 1.2% | -21° |
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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